I have now released a picture of my car

[Sigurd Ruschkow]

Hi,

my extremely aerodynamic car is almost complete :)

After many many hours in the garage and outside in 30 deg C heat
the car is taking its shape.
The shape of my car is not like a "normal" race car but more like
a rocket/airplane combo/mix.

Cd is approx 0.2.

Frontal area is a bit large but as we have the motor between the wheels
the car needs to be this wide. A compromise was made.

There is still a full weeks work on the interior of the car.

A picture from my 3D CAD sysrem has generated a file that Deep Explorer has rendered. You can see the car at:

Extreme Speed Electric RC CAR (http://www.ExtremeSpeedElectricRCCar.com)


Sigurd

[NotWalkinBlind]

Are you referring to the metallic yellow UFO on the home page?

[EddieWeeks]

Where is the car.. ???

[minitdriver]

isn't that the 2 motor TC3 that many ridiculed?Not the UFO thing but the site i mean?I ve been there before but i got mad cause there wasn't a car and that was months ago!Still no car!argh
Ken

[NotWalkinBlind]

...chuckle... Maybe he meant to say "I have not released a picture of my car."

[racinlosi]

Well, that's a pretty big gap on the key board to miss for the letter w to be a t.

[mgs9]

Not for me. I could hit Q and mean to hit P.8)

[surfer]

its the long, yellow, round object.







god that was wrong of me to say!

[EddieWeeks]

http://www.corpcomp.com/weeks1/29.jpg

Here is my car... It has a CD of 0.1

http://www.corpcomp.com/weeks1/29.jpg

[Piggy89373]

man, if I had a digital camera, I'd have done that same pic...was thinking about it, but had a different object in mind...the plastic applicator from tampax. :D :D :D

[Sigurd Ruschkow]

Sure, there is a car! It is the UFO as you say.

It is the car. I am dead serious.

The body as you see on the image is now in my garage!

http://www.ruschkowski.se/tmp/BodyR1C.jpg


Sigurd

[Hz-R]

Still can't make out much of the car, there seems to be a bit much 'background noise'...

As far as I can make out something it is flying, that doesn't qualify it as a car as far as I know!

Curious what the inside looks like!

Robbert

[NotWalkinBlind]

You released a computer image of the body... why not post an actual photo... or at least show us where the rolling gear will protrude.
http://www.saltflats.com/Photo%20Gallery.html

[HauntedMyst]

My wife has something like that in the closet. Does yours take 2 D batteries too? :D

[NotWalkinBlind]

...chuckle... Good one, HM.

That thing is now looking more like a boat than a UFO for some reason.

Sig, put some wheels and tires on that thing, will ya?

[Sigurd Ruschkow]

The wheels do not show that much. They are hardly visible. Wheel are hidden behind the sides for lowest drag.
Here's another one:

http://www.ruschkowski.se/tmp/Body%20R1B%20on%20racetrack.jpg

[NotWalkinBlind]

...chuckle...

Yeah, you're right...those wheels don't show much at all.

No shadow, either... that's a scary piece of Extremfart equipment you got there, dude.
:D :eek: :D

[NotWalkinBlind]

Extremfart Popsicle.

Anyone have a band looking for a name?

[Piggy89373]

HM...that has to be the quote of the month!! God, I'm still laughing about that one. It's a really good thing I don't own a digital camera, I'd get myself in more trouble going through this one.

[Cosmo]

You need to let me paint some flames on the front of that thing....

[Piggy89373]

and paint on a dial so you can turn up the vibration

[NotWalkinBlind]

If you turn it up too high, it might produce an extremfart.

[mgs9]

Its an URCO (Unidentified Remote Control Object)
It looks like a tung.8)

[Mike Keeney]

I think he's working closely with Steve Pond. ;)

[Mike Keeney]

Sig,

What CAD program are you using? Also, didn't I see somewhere that you're from Sweden?

[SS Pede]

Hahahahahhaah!! It's probably powered by warp drive, it'll beat the record by several hundred million miles per hour!

[Sigurd Ruschkow]

Mike,

I am using CATIA, but the rendering is made by Deep Explorer from Right Hemisphere. They have a trial version of DE that you can use for 30 days. Very easy to learn software and it can import lots of different file formats.

Right Hemisphere (http://www.righthemisphere.com/)

Yes, I am from Sweden.


Sigurd


Sig,

What CAD program are you using? Also, didn't I see somewhere that you're from Sweden?
Right Hemisphere (http://www.righthemisphere.com/)

[NotWalkinBlind]

Hahahahahhaah!! It's probably powered by warp drive, it'll beat the record by several hundred million miles per hour!I'm envisioning Sig's buddy walking out to turn four of Irwindale holding this thing and bending over and placing it carefully 4 inches above the track. It floats there, bobbing ever so slightly like the captured extraterrestrial fighter craft in the underground bunker in ID4 when they take the supports away.

Sig, standing in the flagman's perch, hits the throttle and it disappears and a thousandth of a second later, a seven-inch diameter hole appears in the turn one wall.

:eek:

[Piggy89373]

HM, just for you man...powered by warp coil charged by 2 D batteries, with a vibrating dial to align the dilithium crystals. Every time I see a pic of this thing, HM's response keeps popping in my head.

Sigurd, I wondering about the back end of your design (damn that sounds bad), but, would the back end dropping off that abruptly create a bit too much drag? I figured it would taper off a bit more to allow better air flow. Just a thought.

[Mike Keeney]

Hi Sig,

I was wondering if you would do some translation for me. I need to talk with an engineer in Sweden about my engine, but he doesn't speak english.

E-mail me at Mike@NVOne.com if you're interested.

Thanks,
Mike

[racinlosi]

hahaha, this post will make things not sound right.

"Wow, look at that long, round object go down the strait away so smoothly, it's like it's not even touching the ground!"

Wow, that just sounds sick.*throughs up*

[NotWalkinBlind]

Just think how cool it would be to drift with it.

[Sigurd Ruschkow]

About the rear end.

We have not seen any turbulence behind the rear end in our aero dynamic simulations. But there are some turbulence under the rear end.


Sigurd

HM, just for you man...powered by warp coil charged by 2 D batteries, with a vibrating dial to align the dilithium crystals. Every time I see a pic of this thing, HM's response keeps popping in my head.

Sigurd, I wondering about the back end of your design (damn that sounds bad), but, would the back end dropping off that abruptly create a bit too much drag? I figured it would taper off a bit more to allow better air flow. Just a thought.

[NotWalkinBlind]

That would be the extremfart.

[racinlosi]

Hint, where the name comes in, rofl!

[NotWalkinBlind]

Farting in the Wind Tunnel

[Piggy89373]

I have to stay away from this thread...I'm having too much trouble reading it with tears in my eyes. Funny part is, I think his design is sound, but I'm still wondering about any vortices created from the chopped back end.

Sigurd, what about the underside of the chassis, is it going to be solid instead of vented? If so, you could always look at pitting the underneath similar to that of the volvo (I think). It supposedly reduces rear air turbulence. Just a thought.

NWB, ok, new name: Rear Air Turbulence

[NotWalkinBlind]

I had some rear air turbulence last night caused by some steamed squash.

How about...

Any Vortices Created

The Chopped Back End

Solid Instead of Vented

[Hz-R]

I'm looking for a base player, have to start so many bands now, musicians are getting harder and harder to find... Anybody? ;)

About Sigs car. Seems they put a lot of thought into it and used some simulation software to develop it, so I guess it must work. I must admit, it doesn't look like an optimum aerodynamic form to me either...
The rear wheels seem to be very wide as well (are they foams?) Guess it's layed out as a drag car?

[Sigurd Ruschkow]

I am not sure what you mean by vented. Got a picture of the part of the Volvo you mention?

The chassies will look like this:





Sigurd, what about the underside of the chassis, is it going to be solid instead of vented? If so, you could always look at pitting the underneath similar to that of the volvo (I think). It supposedly reduces rear air turbulence. Just a thought.

NWB, ok, new name: Rear Air Turbulence
http://w1.877.telia.com/~u87744635/CarProjectWeb/images/Full%20Chassies%20No2.jpg

http://w1.877.telia.com/~u87744635/CarProjectWeb/images/Full%20Chassies%20Rendered%20No7.jpg

[Sigurd Ruschkow]

You know simulaton in a computer is one thing, the real thing is another thing.

Aero simulators are not that exact.

I wish I had a wind tunel instead.....

The body is a compromise. It is not the perfect body for a car. There are factors other than aero that comes into play. Size of the included oarts for ex. Length restrictions, CG positon, CP positio and so on.



Sigurd

I'm looking for a base player, have to start so many bands now, musicians are getting harder and harder to find... Anybody? ;)

About Sigs car. Seems they put a lot of thought into it and used some simulation software to develop it, so I guess it must work. I must admit, it doesn't look like an optimum aerodynamic form to me either...
The rear wheels seem to be very wide as well (are they foams?) Guess it's layed out as a drag car?

[Kmot]

Don't laugh too hard guys. Sigge knows a thing or two about going fast. So does his team:

http://w1.877.telia.com/~u87744635/CarProjectWeb/members.htm

Wanna see his boat?

http://www.******.net/view_single.php?medid=17977

[NitroDad]

See that's what takes all the fun out of it, building a team to build a car! Of course guys like this is going to win( or teams like this!)! It the ones with the most cash to do the tec stuff, that's on top of the leader board. Man wouldn't it be cool to see someone with a 10yr old RC10 smoke this guy! Besides have you all seen Irwindale speedway? its not very big! I was just by there yesterday.



Ok I am done venting!!!


You guys should get together and do an on the spot comedy show. Whoever you picked on wouldn't have a chance!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[mgs9]

Its all come together sig, I didnt understand your vehical before, It looks like a funny car with a spaceship body. What if your wheels poof or move around it will hit the edge of those cut outs and that wont be good, doesnt look like too much leway, same with your front wheels they look like they have no room to turn. :eek:
Just some thoughts to put into the mix :)

[Sigurd Ruschkow]

Glad you understand how the car looks like and is assembled.

There is some space designed into the car for moving wheels and steering. Not much, though. Much steering will not be needed for this car.

If the wheels blow, the car will probably crash. Hard to avoid that.


Sigurd

Its all come together sig, I didnt understand your vehical before, It looks like a funny car with a spaceship body. What if your wheels poof or move around it will hit the edge of those cut outs and that wont be good, doesnt look like too much leway, same with your front wheels they look like they have no room to turn. :eek:
Just some thoughts to put into the mix :)

[Hz-R]

You know simulaton in a computer is one thing, the real thing is another thing.

Aero simulators are not that exact.

I wish I had a wind tunel instead.....

The body is a compromise. It is not the perfect body for a car. There are factors other than aero that comes into play. Size of the included oarts for ex. Length restrictions, CG positon, CP positio and so on.



Sigurd

It's sure not easy to make everything work the way you want it in a compact package, and still have the perfect aerodynamic car..
Wish you good luck with the further assembly and test runs!

Will you be posting any more real photo's of the car/parts of the car? Could only find the front axle so far.

Robbert

[KTRTS]

I'm looking for a base player, have to start so many bands now, musicians are getting harder and harder to find... Anybody? ;)

*Waves* I'm here :D

[Sigurd Ruschkow]

Here is a photo of the just-painted body:

http://www.ruschkowski.se/47HD0013.jpg


http://www.ExtremeSpeedElectricRCCar.com

[masterblaster17]

how big is this thing.

[Mike Keeney]

See that's what takes all the fun out of it, building a team to build a car! Of course guys like this is going to win( or teams like this!)! It the ones with the most cash to do the tec stuff, that's on top of the leader board. Man wouldn't it be cool to see someone with a 10yr old RC10 smoke this guy! Besides have you all seen Irwindale speedway? its not very big! I was just by there yesterday.
NitroDad,
I think you're being a little unfair. This contest has always been about the fastest car, not the fastest car in the 13 year olds class. This is a contest for the world record, and the raw speed numbers have no consideration for age or how much a car cost. By it's nature, this contest is going to be extremely difficult for every contestant, no matter who they are. One thing that's absolutely certain is that the record will NOT fall to some stock car pulled off the shelf at the local hobby shop. The razors edge of new development almost always lies with the OEM's. What is learned (or earned) at contests like this one will eventually make it to the store shelves. That makes the sport fun for everyone.

However, the promoters are well aware of the importance of the younger enthusiasts and they are going to have something for most everyone.

Cheers,
Mike

[Sigurd Ruschkow]

The body of the car is 40" long and 350 mm wide at the rear.


Sigurd


http://www.ExtremeSpeedElectricRCCar.com


how big is this thing.

[Hz-R]

Looks slick!

[Piggy89373]

Sigurd, have you come up with a concept for a cockpit? Glad to see that the shell has finally come together for you and looks pretty mean. I'm looking forward to seeing the actual car take shape and wish you the best of luck.

[mook]

Looking good. Have you managed to calculate a top speed for this car?

mook

[NotWalkinBlind]

Here's my first concept for the extremfart cockpit... it's kinda dirigible-like, but it's very aerodynamic.

[NotWalkinBlind]

Extremfart cockpit concept number 2.

[Piggy89373]

NWB, three more band names..."extremfart cockpit," "dirigible like" and "cockpit concept"

[NotWalkinBlind]

:eek:

Looks Pretty Mean

Concept for a Cockpit

Take Shape and Wish

Seeing the Actual

Farting in Nomex

[Piggy89373]

Almost forgot

Wide at the rear

[NotWalkinBlind]

Methane for Popsicles

[Sigurd Ruschkow]

Very nice!

I like the small dots at the front - very nice, indeed!

Sigurd

Here's my first concept for the extremfart cockpit... it's kinda dirigible-like, but it's very aerodynamic.

[Sigurd Ruschkow]

Yes, I have. Took me a while to get the equaltion together, but now that I do have the equation, I even made some graphs of speed vs power, speed vs Cd, and speed vs frontal area.

Here's a graph I made for my car. My car has a Cd of approx 0.2 so at 3000 Watts on the wheels, and a frontal area of 0.04 sqm (that is what I have), the car will go 300 km/h in theory. In theory!

Then there is the problem to get up to that speed...and that is another ball game.

Friction is not included in the calculation.

http://www.ruschkowski.se/images/Speed%20vs%20Cd%20at%20P%20=%203000%20W%20and%2000 4m2%20-1.jpg


Sigurd


Looking good. Have you managed to calculate a top speed for this car?

mook

[NotWalkinBlind]

Very nice!

I like the small dots at the front - very nice, indeed!

SigurdLadies and gentlemen... presenting... the newest member of my international fan club.

...chuckle...

Always glad to help out, Sig.

[JaG]

Great Job

[mgs9]

Hey sig how is the body mounted to the chassi, I dont see any body mounts on it, and velcro would not be strong enough.

[thefasttrack]

Hey sig how is the body mounted to the chassi, I dont see any body mounts on it, and velcro would not be strong enough.
yo can never doubt the fact that little duct tape would do

[mgs9]

Oh ye some good ol Kentucky silver, Never fails. :D

[Sigurd Ruschkow]

No, I do not usebody mounts. I want the body to be as clean as possible so the aerodynamic drag fator is not affected, or affected as little as possible.

You can see a small hole on the front on the picture. There are actually 7 holes on each side, and I screw the body onto the chassies with M4 screws.
On the inside we have made some extra long alum M4 nuts that are epoxied onto the sides of the bath tub chassie walls.

The body is reinforced with a mixture of epoxy resin and cotton flocks exactly (and around) where the screw holes are drilled. Without that reinforcement the screws would not be able to stay in one place in the sandwhich designed body.

Not the quickest way to remove the body from the chassie. I know. But it sure is rigid.
I use a battery driven drill machine with bits to remove the 14 screws.

And as the screws are countersunk into the body, they do not change the aerodynamics of the car.

Sigurd

Hey sig how is the body mounted to the chassi, I dont see any body mounts on it, and velcro would not be strong enough.

[NitroDad]

It's called a cordless drill!

[NotWalkinBlind]

Or an electric/cordless screwdriver.

[mook]

what size wheels are you using?

[FninjaP90]

Shouldn't the cd go up as you go faster? According to the graph, the cd goes down...

[studysession]

Interesting.

[NIC]

FninjaP90,

You are reading the graph backwards. The speed your are getting if you have 3000 W and a Cd of 0,35 is 250 km/h.
Now, if you have a Cd of just 0,2 you will reach 300 km/h.


Sigurd,

You didn´t went to the Mantorp Park event did you ? Do you have it ready for Tullinge ? Looking forward to the first tests, and hope that everything works out well.
I just thought about it, are you building ONE car or are you building two incase of a TOTAL wrech ?

NIC

[Andrewg]

Sigge

fantastic progress
looks great
300k would be nice!
Go Sigge go!

(BTW is the purse packed????)

[Sigurd Ruschkow]

This is all I can say at the momemt:

http://w1.877.telia.com/~u87744635/CarProjectWeb/new_page_2.htm

Sigurd

what size wheels are you using?

[Sigurd Ruschkow]

NIC,
no, I was not at Mantorp, and that is because the deal I had with them.

I attended the Tullinge Drag Car Show instead and watched awesome tup fuel drag cars.
I plan to have it ready for September 12 when the next drag car event takes place.


Sigurd


FninjaP90,

You are reading the graph backwards. The speed your are getting if you have 3000 W and a Cd of 0,35 is 250 km/h.
Now, if you have a Cd of just 0,2 you will reach 300 km/h.


Sigurd,

You didn´t went to the Mantorp Park event did you ? Do you have it ready for Tullinge ? Looking forward to the first tests, and hope that everything works out well.
I just thought about it, are you building ONE car or are you building two incase of a TOTAL wrech ?

NIC

[microrcdude]

wow! you got a crazy boat looking car! Crazy cool looking though.

[mgs9]

To day is Sept/12 and and it said "Guiness World Record Run at the Tullinge Drag Car Event in Stockholm." on your site.
So did you do the run? If so how did it go? :D
Or did i miss somthing and you were never doing the run today?

[Sigurd Ruschkow]

Some major electromechanical problems stopped me from racing on the 12th.

Today the car was tested on the track and there are still some things that need to be fixed. Steering is too sensitive and more grip is needed on the rear wheels. Asphalt is cold now. It is autumn.

Please check the web site for the latest details.

http://www.ExtremeSpeedElectricRCCar.com

Sigurd

[EddieWeeks]

Lets see some pics of the car... I looked at that site and cound not find anthing.

Eddie Weeks
http://www.corpcomp.com/weeks1/car/car.html

[Sigurd Ruschkow]

Slides Photos have been made but they are being developed and digitized. Next week they will arrive.

Images of the car are anow available at:

http://www.ExtremeSpeedElectricRCCar.com


Sigurd

[studysession]

No offense but -- It would be nice if you took the music off the website. ;)

[Sigurd Ruschkow]

Studysession - your request is noted.

Sigurd

No offense but -- It would be nice if you took the music off the website. ;)

[studysession]

Thanks -

[EddieWeeks]

Put a direct link of a pic of the car here please... I am tired of that silly music
and nothing to see on that web site... If you spend as much time
building a car, as you did building that web site you may have something..
The title of the thread is "released a picture of my car" and I have not seen a pic of the car with the body off.. That web site is all talk and no substance...

Eddie Weeks
http://www.corpcomp.com/weeks1/car/car.html

[cool head]

testify brother eddie! word!

[DualBL]

^^^ what eddie said...
um. i noticed that you've got 3 Guiness World Record attempts planned. Did you go through all the work to make these official? or just try to beat Cliff's run at 111mph that holds the current record?
-Nick

[okalmnd]

Sigurd,

Some time ago, you posted a link to your sub-site. Please don't take this the wrong way, but that site is about 100X more interesting than the page you keep putting up the link for. I won't list it, since it's not really my place to do so. But I bet a LOT of people checking these boards would like to see the pictures.

Now some questions... You said in an earlier post that the car was handling poorly (too much steering, not enough rear traction.) What's the reason for having all the battery weight right behind the front wheels? Are you concerned about keeping the nose down at speed? Every other proven rear-drive design focuses the bulk of weight toward the rear of the car--close to the rear axle. Just curious...

Like the progress. I'll keep following along for info and updates.

[Sigurd Ruschkow]

Hey Eddie,

if you do not like the music, why do you listen to it?
Do you no have a volume control....

<Put a direct link of a pic of the car here please

Nope.

<and nothing to see on that web site...

People with different backgrounds and interest watch my web site, and I cannot fulfill everyones wishes. Some are beginners and some are normal people and some are experts. Some are engineers and some are artists.

<If you spend as much time
<building a car, as you did building that web site

I am a project manager and I split my time wisely.

<"released a picture of my car" and I have not seen a pic of the car with the <body off..

I am sorry that my Englsih is not that perfect, and I should have written images instead.

On the web site you can read that I have made slides that are being digitised.
This week I will put up some photos.

Anyway, at the speeds we are looking for, I think that the body is far more important than the chassies and what is on the chassies.

<That web site is all talk and no substance...

Sorry to hear that you think that.


Sigurd

Put a direct link of a pic of the car here please... I am tired of that silly music
and nothing to see on that web site... If you spend as much time
building a car, as you did building that web site you may have something..
The title of the thread is "released a picture of my car" and I have not seen a pic of the car with the body off.. That web site is all talk and no substance...

Eddie Weeks
http://www.corpcomp.com/weeks1/car/car.html

[Sigurd Ruschkow]

Nick,

I have scheduled 3 dates, and I did that as I know from experience that there can be rain, be problems with the car, or whatever.
The race events general allowed me 3 dates, and I am not the one to say no to such oppurtunities.

There is just one race event left, and the probablility that it will rain is high.

I do have my Stalker PRO and my guess is that it will be with that that the speed will be measured.

I have applied to Guiness Records for a record attempt. Still waiting for their reply. They promise max 12 weeks delay until they will answer a record aplication and now it has been 20+ weeks.


Sigurd

^^^ what eddie said...
um. i noticed that you've got 3 Guiness World Record attempts planned. Did you go through all the work to make these official? or just try to beat Cliff's run at 111mph that holds the current record?
-Nick

[Sigurd Ruschkow]

You are a smart guy to have found the sub site! No one else has mentioned it.

I am glad you like the sub-site! It is actually just a storage site for the images and pictures and videos and more that are used on the main web site. It is not intended to bee viewed by others than me.
Most photos there are of a low quality, and that is why I have not put them up on the main site.
I will soon get hi res images from my slides. Actually, today.

Steering has now been modified.
Traction problems I do have. No wonder with the power I have. The asphalt I raced on was not sweeped. So there was far too much sand on it for my wheels to get the grip I need. No glue and no rubber like they use on the drag race events. I was there two days after the event, and no glue or rubber was left on the track.

My thoughts about traction. I want to have as much weight on the rear wheels that gives me the max possible traction but without sacrificing on my other demands on the car.
The traction Force, ie grip, is
F = u m g,
where u = friction coefficient,
m = mass,
g = gravity constant = 9.8 m/s2

So, more mass, more grip.
More friction, more grip.

I hope that I will have a prepared drag car raceway with glue and rubber. That will increase the grip far more than having most mass on the rear wheels.
Heated and soft rubber wheels will increase u.

Also, as I have abut 400+ m of raceway, I do not need the grip that a car that will race on Irwindale will have. My car is a hybrid between a drag car and a Bonneville car.

I do want the CG of the car to be in front of the CP of the car. For stability as you say. Nose down.


Sigurd

Sigurd,

Some time ago, you posted a link to your sub-site. Please don't take this the wrong way, but that site is about 100X more interesting than the page you keep putting up the link for. I won't list it, since it's not really my place to do so. But I bet a LOT of people checking these boards would like to see the pictures.

Now some questions... You said in an earlier post that the car was handling poorly (too much steering, not enough rear traction.) What's the reason for having all the battery weight right behind the front wheels? Are you concerned about keeping the nose down at speed? Every other proven rear-drive design focuses the bulk of weight toward the rear of the car--close to the rear axle. Just curious...

Like the progress. I'll keep following along for info and updates.

[EddieWeeks]

<<Put a direct link of a pic of the car here please>>

Nope.

Sigurd

Why not.. ?

Eddie Weeks
http://www.corpcomp.com/weeks1/

[NotWalkinBlind]

Sig, the problem with the music is that if one has the volume set at a reasonable level due to listening to CDs, then clicks on your site, your music is VERY loud... MUCH louder. If you could lower the volume 40-50%, that would be appreciated.

I am at work and clicked on your site... and had to reach for the volume knob very quickly.

I feel this is a very reasonable request to ask you to set it lower or remove it.

[studysession]

YES - It is the volume and it is very loud. That is why I stopped going to the site. I did not mean to have this flame war start about your site and sorry for that. I think it is great you are going to enter the speed contest and you have a lot of great ideas.

When I made the original post asking about the music taken off - I have not been to the site for a long time and figure I would go check it out and nope not changed the music so I closed the window.

Everyone knows media can be streamed and loads of people are on dial up and do not want to wait for the music at all. Music or video should be something that is clicked on by choice, not forced as background of a website.

Cheers -

[thefasttrack]

yo relax easy on sigurd please. (remeber what hapenned to the off topic forum)

[Chris LaPanse]

how about these-I got them off his site:
http://www.ruschkowski.se/images/Front-Side-3.jpg
http://www.ruschkowski.se/images/Rear%20View.jpg
http://www.ruschkowski.se/images/48E80025.jpg

[mgs9]

Hey sig I was just wondering, how many volts are you running through your car? I think that Cris guy that broke the record was running 17 volts or so.

[mgs9]

wow your pic just loaded up lol
Thats realy nice Sig you wern't kidding it realy dose exist.
Looks like you put alot of work into that

[Andrewg]

Eddie

I am annoyed with your rudeness.

Sugar will get you a lot further than vinegar.

Like you we are all here sharing whatever we have on a voluntary basis.

Sigge is very well regarded in speed circles - his equipment is innovative and fast.

I am sure you have noticed his is a team effort - there is a message there - and none of the team members are newbies at this stuff or without qualification in their field.

Sigge is very easy to get along with and has a great ability to laugh at himself and with others.

[EddieWeeks]

Eddie
I am annoyed with your rudeness.


Your approval is not required..


Sigge is very well regarded in speed circles - his equipment is innovative and fast. Sigge is very easy to get along with and has a great ability to laugh at himself and with others.

Sigge along with his team, may be very good at this but the
fact is I am just not interested in %99 the stuff on that web site...
Its was just today there are real pics of real cars.. Many weeks
after the original clam of "I have now released pictures of my car".

Now that there are pics of the a working car, I have no problem.

Eddie Weeks
http://www.corpcomp.com/weeks1/car/car.html

[Sigurd Ruschkow]

Hello,

I am running 32 cells. At say 100 Amps I would get approx 1 / cell, so that is 32 V. The GP3300s I have from Hopf in Germany are pushed and matched and have verly low IR.

Now, the Voltage is not everything. Power is.
The batteries that Chris used are with today's standards not good at all.
I am amazed that Chris could go this fast with his old fashioned equipment!

With today's best of the best GP3300 one could actually get around 5-6000 Wats of power. That is around 6 - 8 HP!
I use a lower estimate of 5 HP for my setup.


Sigge

Hey sig I was just wondering, how many volts are you running through your car? I think that Cris guy that broke the record was running 17 volts or so.

[Andrewg]

Eddie

You are right you dont need my approval, however as I was not giving it I am unsure why you mentioned it.

You seemed so desperate for a photograph rather than a picture and you had to wait all this time. Perhaps a more diplomatic approach would have got it sooner and given you access to more information.

[studysession]

Looks good!

I have a question - What motor and controller is that? Looks nice and I think the length will help to make the car easier to control.

Looks very cool.

[Piggy89373]

Sigurd, I finally got back to your site and saw your almost finished product of your car. You said earlier that you had some steering sensitivity problems on your test run. How fast did you get to go? I'm also wondering about those vertical stabilizers and high speeds. Granted, I don't have the simulation software and I'm just a couch potato hack, but won't those have a negative effect on your steering making it want to drift at high speeds with a cross wind?

Lastly, I along with many others, would like to see some video of it running at speed.

Great work, and viel Glueck dabei!!

[Chris LaPanse]

I would also like to see some video.

[mgs9]

Hey Sig, i was sitting in school today, board to death thinking. I thought of a theory for some of your traction problems you were talking about. I dont know how accurate they are or if you have already though about this. Ok on your average touring car the there is space between the chassi and the body all the way around, like 2cm or more, so when air passes under the body the air that dosnt make it out throught he back goes up through thoes spaces. It seams your car has no real way for the air pressure underneith to escape so it pushes it up, not alot but enough to lose a little traction. I relize that with no place for the air to go underneith it gives you more arrow dynamics but it could be coasting you some traction. I dont know if that makes cense or not but thats my input.

[cool head]

i'm not surprised that vehicle has handling issues. the lack or rear down force has got to cause it to become squirrely. i've ran a car i built a few years ago. went well over 80mph. but it took a lot of trial and error with rear toe and wings (yes, multiple wigs)for down force before i had a car that you can control at high speeds. rear toe in is a must for stability. sig has everything in the right place, but i think that solid axel with no toe adj and the lack of down force will be an issue. jeeze, just buld a flexable wing that will fold down after it has a set amount of force excerted on it.

here's a pic of my old speedster

[cool head]

a naked shot for the curious

[Toyotatogo]

What's your gearing for that car @cool head? Is that a OFNA .26 Engine also?

[cool head]

if i recall the gearing was a 22 clutch bell with a custom 40 tooth spur. the engine was a ported omega/pico 21. it was funny how the tirs acted like a second gear. as you got up to full speed, the tires would balloon and it would keep going and going. it usually got about out of sight before it got to full speed.

sorry didn't mean to hi-jack your thread sig!

[mgs9]

Hey Sig why do you have your antennae sticking out like that? Dosn't that creat aerodynamic distortion and disrupt the clean flow on top of your body. Could you take the antennae through to the rear of the car and just have it stick barly out the back or would that be worse?

[Sigurd Ruschkow]

Hi,

go to the web site and there is an almost complete spec of the car.



Sigurd

Looks good!

I have a question - What motor and controller is that? Looks nice and I think the length will help to make the car easier to control.

Looks very cool.

[Sigurd Ruschkow]

Hi,
the vertical stabilisers have the same purpose as the vertical wings on jet air planes. To create a momemtum around the CG.
Too much side wind and I might need to counter steer with the front wheels. If it is stormy I will not race of course.

Maybe the wings are not optimised for my speeds as they are not wing shaped, but they are a good compromise.

Rain and more rain has stopped me from doing any speed measurements with the radar gun, but as soon as there will be dry roads I will be at the track!

Video is low prio at this time.


Sigurd

Sigurd, I finally got back to your site and saw your almost finished product of your car. You said earlier that you had some steering sensitivity problems on your test run. How fast did you get to go? I'm also wondering about those vertical stabilizers and high speeds. Granted, I don't have the simulation software and I'm just a couch potato hack, but won't those have a negative effect on your steering making it want to drift at high speeds with a cross wind?

Lastly, I along with many others, would like to see some video of it running at speed.

Great work, and viel Glueck dabei!!

[Sigurd Ruschkow]

Good question and the answer I had a while back was that an antenna (be it piano wire or a plastic tube) mounted on the front would bend at the speed we wanna travel, so
I made the antenna inside a plastic tube so I would know what
position the antenna would be in at any time.Also, the max length for the Irwindale speed comp is 40" and my guess is that that includes teh antenna at speed.

The receiver and antenna must be as far away from the speed controller and the motor as possible. The electromagnetic fields those create wil for sure disturb the receiver's functionality. if one mounts the receiver too close to the controoler and motor.

So far so good,
but now I have range problems partly due to the fact that the antenna is bent so much.Today I will make another antenna that is higher vertically. Problem is to get the antenna mount strong enough...

I am not worried about aero dist as I have so much power available.


Sigurd



Hey Sig why do you have your antennae sticking out like that? Dosn't that creat aerodynamic distortion and disrupt the clean flow on top of your body. Could you take the antennae through to the rear of the car and just have it stick barly out the back or would that be worse?

[Sigurd Ruschkow]

You have a point Mr Cool Head.

At speed I have the diffusor that will create downforce, but at low speeds the diffusor is not creating much downforce at all, so I have to rely on the downforce from the weight of the car.

Now, the last time I was out I used toe in on the front wheels and also heeted the rear wheels, and the car is now much more stable.

My problem now is that at say 80 mph I must still continue to accelerate and sometimes one of the rear wheels looses grip due to a bump or a hole or some sand or whatever, and then the car spinns around in a circle.

At these speeds there is not much time nor visibility to control the car so I am happy if the car just tracks in the direction that I have started the car in.

Sigurd


i'm not surprised that vehicle has handling issues. the lack or rear down force has got to cause it to become squirrely. i've ran a car i built a few years ago. went well over 80mph. but it took a lot of trial and error with rear toe and wings (yes, multiple wigs)for down force before i had a car that you can control at high speeds. rear toe in is a must for stability. sig has everything in the right place, but i think that solid axel with no toe adj and the lack of down force will be an issue. jeeze, just buld a flexable wing that will fold down after it has a set amount of force excerted on it.

here's a pic of my old speedster

[cool head]

hay sig, you know, a front heavy car will have way too much over steer. why dont you try moving your battery supply closer to the back of the car. another way i was able to control my car at high speeds was to put some hard compound (less traction) tires on the front so the car doesn't react so violently when you try to correct it. one other thing i found through trial and error was trying a solid rear axel. that made the car way worse to control. i think the use of a torsion diff will help handling and allow you to give the car some rear toe adjustment. you'd be surprised how much some rear toe in will help the car remain stable as it gets above 80mph.

[Sigurd Ruschkow]

Thanks for your input, cool head.

We have chosen a CG around in the middle of the car so it will not lift in the front of the car. The CG was planned ot be even more to the front but that was not possible due to the weight distribution that the components gave us (could not move some parts too much to the front due to physical limitations).

Our CG and our vertical wings (fins) will keep the car stable at very very high speeds.

No problem to go straight anymore.
At today's racing I went straight for 500 m :)


Sigurd

hay sig, you know, a front heavy car will have way too much over steer. why dont you try moving your battery supply closer to the back of the car. another way i was able to control my car at high speeds was to put some hard compound (less traction) tires on the front so the car doesn't react so violently when you try to correct it. one other thing i found through trial and error was trying a solid rear axel. that made the car way worse to control. i think the use of a torsion diff will help handling and allow you to give the car some rear toe adjustment. you'd be surprised how much some rear toe in will help the car remain stable as it gets above 80mph.

[mgs9]

How do you feel about my theory up there, dose it make sence or is that not enought space under the car to worrie about it or what.


Hey Sig, i was sitting in school today, board to death thinking. I thought of a theory for some of your traction problems you were talking about. I dont know how accurate they are or if you have already though about this. Ok on your average touring car the there is space between the chassi and the body all the way around, like 2cm or more, so when air passes under the body the air that dosnt make it out throught he back goes up through thoes spaces. It seams your car has no real way for the air pressure underneith to escape so it pushes it up, not alot but enough to lose a little traction. I relize that with no place for the air to go underneith it gives you more arrow dynamics but it could be coasting you some traction. I dont know if that makes cense or not but thats my input.