Nitro Monster Truck Electric Conversions

[badboy2]

i have a savage that i converted into electric ..i wanna see if what other trucks they can convert to electrics..for me its kinda complicated coz i really dont know anything about electrics..i thot its just switch and go ..the more i search the more it gets complicated..from running 12cells nimh to lipo powered trucks..maybe u can share ur set up in this thread..
mine will be quark 125b,8xl with ib 3800mah nimh cells..i started with the kershaw designs conversions for the sav but i got curious about brushless so i decided to go brushless..im still searching more infos about running batteries in series for my quark125b i dont want to fry a bl esc again..can u post ur set up on how u connect ur batts in series and how did u took out that red wire on the esc so u can run series?

[SerpentKing101]

delete me

[Adanmtxt1]

delete me

I know, like what the heck, right? Whatever.

So, Badboy, you converted you Savage to electric, are about to get a full brushless setup, but want advice on what brushless setups to get because you don't know anything about electric, much less brushless? Congratulations, you earn my most confused face award of the day.

[SerpentKing101]

Maybe because I posted in the thread I didnt intend to...

And yet, my post still ends up being more worthwhile than yours.

[Adanmtxt1]

Maybe because I posted in the thread I didnt intend to...

And yet, my post still ends up being more worthwhile than yours.

Is that directed at me? If so, go back to the couch and watch tv with your cheetos. :flame: If not, I have nothing to say regarding that. :roll2:

I should mention that there are electric conversions for the Savage, Revo, and numerous custom installs on buggies

[badboy2]

yea i converted my sav to electric and yes im kinda new to electric and i went ahead and bougth a brushless set up ..is that unusual? i kno my post maybe didnt make any sense..its not that idk what bl set up im gonna use,i got the set up already . i just want to know how to do it right..and i also wanna see other nitro trucks or buggies that were converted to electric..

[SerpentKing101]

Is that directed at me? If so, go back to the couch and watch tv with your cheetos. :flame: If not, I have nothing to say regarding that. :roll2:


I made a little boo-boo on the forums, and that somehow made you take your head out of ass for the split second to come up with that half-hearted flame of yours. Weak.

Better save that sarcasm for someone else. And brush your teeth.
--

On the topic at hand, a guy I race with has a LST he converted himself, and it looks better than the Fine Design kit IMO.

[badboy2]

finedesign is too much $$ ...i prolly saw some of his posts in rcu if hes the same guy u run with but for someone like me who seldom run trucks i want a simple setup..i dont wanna go lipo coz of too much maintenance and also more $$$..

[SerpentKing101]

He registered as E-LST (fitting, huh?) on these boards. I dont know if he's over at RCU or not.

[Adanmtxt1]

finedesign is too much $$ ...i prolly saw some of his posts in rcu if hes the same guy u run with but for someone like me who seldom run trucks i want a simple setup..i dont wanna go lipo coz of too much maintenance and also more $$$..

Well, if you want to fully exploit the benefits of brushless, you should invest in a nice lipo-capable charger and either one or two lipo battery packs. But, if you don't, you will still find that you will have a blast with more efficiency, power, and run time.

Oh, btw, someone on another forum is wanting to build an E-Jato...yes, and ELECTRIC TRAXXAS JATO!! It seems pretty awesome to me, I don't know about everyone else, but just think: a far-superior Rustler in every way! Except those lame stock tires. :D

[badboy2]

ill prolly go with the lipo later on im actually thinkin about getting the a123 batts looks easy to work on and safer than others..

[Chachi_RC]

What is your guys thoughts on the Kershaw Designs Revo conversion? I was looking at the GorillaMax version, but putting $1200+ into an electric monster truck is a bit too much. Especially with the thought that as soon as I were to build one, Traxxas would come out with a factory version that would be less than 1/2 the price. It looks like a nice set up, but I haven't seen one in person. For the price of a G2R rolling chassis from GorillaMax (rc-monster.com) at $595, you can get a completely built version with motors and esc. KD has their version built for $549. If anyone has any thoughts on it, let me know. Thanks!

[badboy2]

i think i would go for the kershaw designs since you will have everything u need from esc to motor..while on gorilla max after 600bux u still need around 400bux if u wanna go brushless..on the other hand the gorilla chassis looks nice..

[hyperstang]

I was thinking of doing something like the "E REVO". Was about to buy the $304.00 kit right off of Gorillamaxx.com, but realized, I sold my REVO when I got into the truggy class. Talk about not keeping track of my cars. I thought I had a Twin Force monster truck also, but in the bin is only HPI bodies.

Now I need to re think this E REVO project.......now that I don't have a REVO...that is some $ we are talking about...

[badboy2]

its gonna be a lot of $$ to drop in one shot if u dont have the truck u want to convert..unkess u got the $$ u can get a nice roller for cheap and get the kit..i think bomb proof products have conversion for lsp too..

[jocktheglide165]

I got the gorilla very expensive and nice, but I might sell it its brand new still im a builder not runner....

[badboy2]

does it have the tranny and all the stuff to build it?

[jocktheglide165]

does it have the tranny and all the stuff to build it?
yes.....

[badboy2]

so it just needs the motor and esc? man u might wanna trade it for a titan twin lmk hehehe..

[jocktheglide165]

so it just needs the motor and esc? man u might wanna trade it for a titan twin lmk hehehe..
no thanks, but nice truck man I had one....expensive, but dang very nice truck.

[Combatcm]

http://i3.photobucket.com/albums/y93/combatcm/tnxs.jpg

http://i3.photobucket.com/albums/y93/combatcm/frontdrive.jpg

http://i3.photobucket.com/albums/y93/combatcm/motormt.jpg

http://i3.photobucket.com/albums/y93/combatcm/bltnx.jpg

http://i3.photobucket.com/albums/y93/combatcm/12mmoneway.jpg

Only 8 cells and it still runs almost as good as nitro.

[badboy2]

nice pix is that a terra crusher or a tnx?are u using a UBEC ?where in nj are u from?im stucked in soldering the ubec and esc together..im afraid i might do it wrong..

[badboy2]

i forgot to ask u combat on what size screws are u using for the motor?

[Combatcm]

That's a TNX, yeah the UBEC is in the reciever box.

I'm from sussex.

The UBEC is simple, I just doubled up the power input wires on the deans connector.

The screws are 3mm.

I think it pulls a little over 30, which is not bad, especially for a motor that powers cars half the weight. It's a 9s. All temps are in check, in the summer the esc got pretty hot.

[badboy2]

so u soldered the ubec wires with the esc wires on the deans?

[Combatcm]

Yeah

[Philly's Finest]

Nice thread!

Thinking of doing an GP to EP conversion myself. Pretty much just for the fun of building it. I was thinking of doing a savage conversion running a single 700 sized johnson drill motor, a mamba max and 4 or 5 cell lipo. I'm thinking that would haul pretty nicely and be fairly light on my wallet as well.

I'm also considering a revo or jato conversion. Not 100% yet but will probably go with whatever is the cheapest roller I can find at the time.

[badboy2]

i used to run dual 700motors with evx esc and 3800s mah nimh batts..i can say that theres a lot of torque but defintely needs more top end..one reason i switched to brushless..im considering getting the lipo batts in the future..i have an almost new titan roller u might wanna trade or buy..ehehhe

[badboy2]

http://img63.imageshack.us/img63/6632/dsc02275io0.jpg
http://img242.imageshack.us/img242/589/dsc02261nn6.jpg

here are the dual dewalt 700motors..the mounts are from kershaw designs which makes ur conversion easier..they also have mounts for brushless motors which i have for my savage..

[Philly's Finest]

Sweet ride man! If I do a savage I'm gonna go pick up a set of the lst2 shocks and a kershaw motor mount and probably pinions from them too. Speaking of, what gearing did you run with the drill motors?

I don't need a speed demon but I just want something fun to muck around with. Then when I do feel the need for speed I'll pickup a brushless motor.

[captanabolic]

Here are some pics of my Brushless Lst. I am converting a savage for my Bro Inlaw. I went with the FINE DESIGN setup and I am very happy. 4s is fast 5s ballistic. I love these hyperion cells.

http://i85.photobucket.com/albums/k43/captanabolic/LST/100_0433.jpg

http://i85.photobucket.com/albums/k43/captanabolic/LST/100_0434.jpg

THE CAPT

[badboy2]

Sweet ride man! If I do a savage I'm gonna go pick up a set of the lst2 shocks and a kershaw motor mount and probably pinions from them too. Speaking of, what gearing did you run with the drill motors?

I don't need a speed demon but I just want something fun to muck around with. Then when I do feel the need for speed I'll pickup a brushless motor.

thanks i was running 20t but u can ask them if u can go higher..

cap i like the lst conversion too but its too much for me..heheh
im searching for some info about lipos..it really looks complicated for me..like balancing and all..and that will be another $300 to drop with charger and batts..thinking of the a123 batts and charger combo ,their batts looks easy to maintain is that right?

[E-LST]

Hey Capt. sorry about clogging up your thread with my pics, hope you aren't too upset with me

Hey badboy, I have a LST that is somewhat like the Savage you're talking about, in the fact that I have put a Savage tranny (3 speed) in my lst and use the novak hvmaxx system. I use plastic rc 10gt spur gears (robinson i think) and use 32pitch pinions. I run it with 12 to 14 cells, 3800's, and it runs pretty well, although when I was racing it this summer in the high temps (track temp was 135F) it would thermal for about 60 secs. but in the cooler temps or just bashing it was fine. I did all the conversion myself with just common hand tools, except for the welding required for shortening the front drive shaft, here's some pics to ponder over.

[badboy2]

yo u forgot the pix!!

[E-LST]

Really i didn't,, they are on the capt's thread over on the monster truck forum and I don't know how to get them over here, it won't let me post them again. so the best thing i can think of is to go to monster trucks, the capt's brushless lst thread, They are down at the bottom of the page, sorry

[badboy2]

oh ok i thot u were trying to post them here hehehe..
anyway i have question where do i connect the BEC connector on the radio rx?will it go on aux channel or batt?

[B4 Stealth]

Well, if you want to fully exploit the benefits of brushless, you should invest in a nice lipo-capable charger and either one or two lipo battery packs. But, if you don't, you will still find that you will have a blast with more efficiency, power, and run time.

Oh, btw, someone on another forum is wanting to build an E-Jato...yes, and ELECTRIC TRAXXAS JATO!! It seems pretty awesome to me, I don't know about everyone else, but just think: a far-superior Rustler in every way! Except those lame stock tires. :D
last time I checked they called that a stadium truck....lol :D

[SerpentKing101]

what do you guys think about a converted MGT? It seems pretty painless from what I've seen pics of...I basically needs something like an oversized e-maxx, and this fits the bill the best it seems. I already started to pluck bits off ebay, ill get a roller soon enough...

Would it be possible to get it under 13lbs RTR with NimH? Weight wont be a problem with the BL setup I have planned ( Warrior 9920/ Lehner 1940/7 on 16-18 cells or 6s), but thats down the road a bit. Waay down.

\/ not my truck. I'd be the happiest guy alive if it were.

[Maxx42]

what do you guys think about a converted MGT? It seems pretty painless from what I've seen pics of...I basically needs something like an oversized e-maxx, and this fits the bill the best it seems. I already started to pluck bits off ebay, ill get a roller soon enough...

Would it be possible to get it under 13lbs RTR with NimH? Weight wont be a problem with the BL setup I have planned ( Warrior 9920/ Lehner 1940/7 on 16-18 cells or 6s), but thats down the road a bit. Waay down.

\/ not my truck. I'd be the happiest guy alive if it were.

I'm actually finishing up my converted MGT. I'm using a custom motor mount with the 4.6 tranny. I removed the gear for first gear and used epoxy to fasten the second gear to the one way bearing and to the second gear clutch. My setup is a Wanderer 9XL (same as the feigao) with a schulze 18.97 set up on boat setting (brake will be greatly diminished through the esc) with reverse shut off. I'm keeping the mechanical brake and reversein the tranny. For battery mounts, I used a gorillamaxx battery tray. The CG is very low this way. I probably won't have it done untill tomorrow.

[SerpentKing101]

by using that epoxy on the OWB, wouldnt that allow you to get brakes from the motors and also allow the truck to shift gears automatically? Woulbe be interesting if that were the case...

My MGT project is underway, with me getting a chassis and a few sets of a-arms. But i did get offered a trade a converted LST minus electrics for my touring car...

decisions, decisions...

[badboy2]

do u have pix of the mounts?omg i might end up with electric mgt also heheh..maybe convert all my 7trucks to elecs heheh..i was actually thinkin of the elec mgt coz it has a nice chassis lay out than savage..but im not good in fabricating stuff like mounts and stuff needed for the conversion..

[Maxx42]

by using that epoxy on the OWB, wouldnt that allow you to get brakes from the motors and also allow the truck to shift gears automatically? Woulbe be interesting if that were the case...

My MGT project is underway, with me getting a chassis and a few sets of a-arms. But i did get offered a trade a converted LST minus electrics for my touring car...

decisions, decisions...

Actually I had epoxied the high speed gear to the OWB and it performed extremely well like that. The way the MGT tranny is set up, the low speed gear is fastened to the one way so it is always driving the main axle in the tranny while the high speed gear spins on the OWB. When the high speed gear clutch kicks in, the low speed gear just spins freely on the main axle while the high speed gear now turns the axle. You can still use the tranny reverse and mechanical brake if you remove the low speed gear and fasten the high speed gear to the OWB. That was the setup that I was using, but the epoxy wasn't grabbing good enough. After about ten minutes of running, the epoxy kept braking free and the high speed gear just spun freely. If I were able to keep the high speed gear fastened to the OWB good enough, this setup would have worked. Now I have the high speed gear epoxied to the one way as well as the high speed clutch, but in doing this it causes the reverse gears to bind with the main shaft, and so I had to remove one of the reverse gears. Now I have to switch reverse back "on" on the controller if I want reverse, but I'm keeping the controller on "boat" mode so that the esc brakes are very weak and I can still use the mechanical brake. I'd like to use the mechanical brake as I feel that I have more control over the truck when stopping or just slowing down for a turn - just my preferance.

[Maxx42]

do u have pix of the mounts?omg i might end up with electric mgt also heheh..maybe convert all my 7trucks to elecs heheh..i was actually thinkin of the elec mgt coz it has a nice chassis lay out than savage..but im not good in fabricating stuff like mounts and stuff needed for the conversion..

I agree with you on the MGT having a nicer chassis to lay out the electrics. That was the reson why I went with the MGT. I also have a modded emaxx too and the mgt now looks like a much larger version of my maxx, but I think the mgt handles much better (not to mention how much cheaper it was to get a high performance electric monster truck by just converting the mgt).
As far as the motor mount goes, I used a 3 hole angle steel strut support and drilled it out for mounting holes for the motor and then drilled holes to mount the motor mount to the same holes that the nitro engine would use.

[Maxx42]

Here are a few pics:

[IMG]

[badboy2]

who made ur motor mount?are u running your batts in series?can u pls post pics of the connectors?

[Maxx42]

I made the motor mount out of a steel angle bracket. I only had a drill and bandsaw at my disposal, but it came out pretty good. After a little sanding with my dremmel, any sharp edges from the rough cuts were gone. The clamp around the motor is there to support the rear during any hard landing. It doesn't hold the motor in place, as the angle steel is 1/4 inch thick and will never flex under the harshest race/bash conditions.

I use deans connectors for the batteries and controller. I just made a simple "Y" adapter so I can run 5s lipo with my controller. I use a 3s pack on one side and a 2s on the other.

[nitro_newbie]

nice truck thats what i wanna do to my truck its a t-maxx tired of nitro and no shops close by to get fuel. i wanted to kno if the tmaxx tranny would shift with the electric motors and would reverse work since the motors are reverse rotation? i dont have the reverse on the transmission pretty clunky so never put it on. so would it work?? thanx alot
nitro_newbie

[SerpentKing101]

I got some random MGT bits off ebay today, and this thing is going to be bigger than i thought it would. the conversion seems to be pretty painless; the holes in the e-maxx's tranny line up perfectly with the ones on the chassis, but the chassis is just a bit too wide and low for it. Im thinking a piece of aluminum on both sides of the tranny will fix that.

should be an interesting project, and not just becasue its the only one ive started on (still need to cook up a 1-2 motor 12-cell tourer...)

[badboy2]

nitro newbie if i were u ill just trade ur tmaxx for an emaxx instead of converting it..i think ur gonna end up spending more if u convert it..

[nitro_newbie]

well im just going to sell the nitro related parts ie tranny and motor chassis and get the tranny from the emaxx and im good thanks for the response

[badboy2]

true..what motor are u going to put on it?i think mamba monster maxx is coming out in february?i should have waited prolly more cheaper..i got the savage done but im afraid to turn it on it might burn the esc like the last time ..

[SerpentKing101]

I kind of figured you guys might find this interesting. Whoever can guess the program gets a cookie. :D

Once I get this piece made, buy some battery backstops and straps, and find out how long the center driveshafts have to be, everything else should drop right in.

Are MGT conversions supposed to be this painless? :p

[Maxx42]

I got some random MGT bits off ebay today, and this thing is going to be bigger than i thought it would. the conversion seems to be pretty painless; the holes in the e-maxx's tranny line up perfectly with the ones on the chassis, but the chassis is just a bit too wide and low for it. Im thinking a piece of aluminum on both sides of the tranny will fix that.

should be an interesting project, and not just becasue its the only one ive started on (still need to cook up a 1-2 motor 12-cell tourer...)


When I originally started, I was going to use an emaxx tranny as well. I decided to try using the mgt tranny first to see how it would work. I'm curious about which center shaft setup you plan on using for the emaxx tranny on an mgt. Possibly revo 3.3 sliders? The stock center axles for the mgt are too short to use with the emaxx tranny. I have read on another forum how someone had custom dogbones made for his conversion using the emaxx tranny. However you do it, I hope it comes out well.

[SerpentKing101]

im thinking a pair of extended supermaxx shafts would work. But I wont know for sure until I get some diffs.

[SerpentKing101]

seen on another forum where a guy used centers from a X1CR buggy, which lined up perfectly. Then there's this other MGT conversion with a center diff. :eek:

[Maxx42]

seen on another forum where a guy used centers from a X1CR buggy, which lined up perfectly. Then there's this other MGT conversion with a center diff. :eek:

If it's the same guy on rcmonster, he had custom center shafts made for his conversion. Now he's trying to put a slipperential on his mgt it appears, using the gorillamaxx x-braces.

[badboy2]

im having too much wheelie on my savage whats a good spur for a 16t pinion?i think i have 52t and it wheelies too much..i cant get to top speed with out doin it easy on the throttle..then i noticed that after it flipped a lot my esc wont go forward without me hitting the brakes,idk what happened?you guys might know can u pls explain ?thanks

maxx42 can u make me a trace of your motor mount?like all the holes u drilled and maybe the actual size of the mount..

[Maxx42]

maxx42 can u make me a trace of your motor mount?like all the holes u drilled and maybe the actual size of the mount..

I actually made a mock of my motor mount out of cardboard first. It's much easier to manipulate things with cardboard than to fine tune a piece of metal especially if you don't have access to a machine shop. After I got the shape and measurements where I wanted on the cardboard piece, the steel mount wasn't too hard to make (all I had for power tools to make this was a drill, bandsaw and a dremmel for smoothing out the edges. I'll see if I can get a rough picture with measurements up for you.

[badboy2]

thanks man ..where did u get the piece of aluminum for the mount ?can u buy this?

[Maxx42]

The mount is actually made out of a steel 90 degree B-Line angle support (3 hole support with the holes 2" on center). Most plumbing or electrical supply stores should carry them. They cost around $3. Here is a rough draft of my motor mount. If you have any questions just ask.

[Maxx42]

One more pic ...........

[SerpentKing101]

If it's the same guy on rcmonster, he had custom center shafts made for his conversion. Now he's trying to put a slipperential on his mgt it appears, using the gorillamaxx x-braces.

I'm thinking if someone were to mill a wider diff mount (or use my nifty adapter) they wont have to batcher an x-brace.

And maybe have the motor mount screwed in from the bottom and sides of the chassis...theres an idea. Who has a milling machine?

[pinolelst]

My E-LST2 converted over using the FD kit and my Converted Cen Matrix...Matrix is only awaiting the Feigao 540 8XL to arrive from China to be complete .
The e-lst gets about 15 -20 minutes bash time on a 6000 mah 4s2p maxamps pack and just about 12 minutes WFO tearing it up mercilessly.

Just say no to glow :D \

pinolelst

[Maxx42]

Nice job on both conversions. I was considering converting the LST, but I got a really good deal on the MGT on ebay and couldn't pass it up.

[badboy2]

is 1x6000mah enough to run the truck?i always think i needed 2 packs to run thats y im worried of the $$ ill spend..if one is enough maybe ill go for it..do these lipo packs comes in the same size as the 3800mah stick or match packs?
how often do u need to balance these batts?
oh and which will u prefer if u were to choose ,6 of 4100mah megatech stick packs for 60bux or say a 6000mah lipo?

[badboy2]

http://img363.imageshack.us/img363/4341/dsc02540to6.jpg
http://img159.imageshack.us/img159/5047/dsc02538xj0.jpg

heres my set up now im only rnning 2x3800mah and it lasts 5-8mins im not sure if thats due to over used batts or its really like that..

[pinolelst]

is 1x6000mah enough to run the truck?i always think i needed 2 packs to run thats y im worried of the $$ ill spend..if one is enough maybe ill go for it..do these lipo packs comes in the same size as the 3800mah stick or match packs?
how often do u need to balance these batts?
oh and which will u prefer if u were to choose ,6 of 4100mah megatech stick packs for 60bux or say a 6000mah lipo?

That's a 4 cell lipo at 16.8 volts fully charged so yes it's enough to run the truck and flip it over on it's lid if I'm not careful with the throttle.In your rig to keep the saddle pack balance you could get two packs of 2 cells each and use a y connector between them for lighter weight and more run time than the 12 cells 3800 you're running now.The sellers usually have dimensions on their sites for you to compare.I know I have a 3 cell 4200 lipo pack that fits in the stock battery tray of my Losi XXX-t MF2 so chances are you could find something to fit
I balance my packs about every other run.I've never read a recommendation as to how often we should balance but noticed that if I balanced every charge the balancer didn't seem to be working all that hard which I took to mean the pack was still balanced pretty well.I could probably get away with more cycles between balancing but figure it can't hurt and helps justify paying $30 for a Blinky in my mind anyway ;)

You can pay $60 for a 4100 mah nickel pack that will give you about 6 volts at somewhere less than 100 amps or pay $90 for a 6000 mah lipo pack that will give you that and more with less weight and 50% more run time.It's up to you but I can never go back to nickel based cells.
Look down this page a little way to the 6000 mah pack.It shows a whole slew of standard rc cars that it fits
http://www.maxamps.com/contents/en-us/d56.html

Remember you need a lipo charger as well if you don't already have one.

Nice Truck BTW :)
Hope this helps

pinolelst

oh yeah
visit rc-monster.com for more answers

[badboy2]

do this maxamps lipo batts have the same size as the stick packs?as u can see my battery tray can only fit matched packs or stick packs..

[g0202180]

what kinda clamps are u folks using to hold down the BL motors?

[g0202180]

do u guys mod the spur gear as well? Would i need to change out the 32 pitch spur?...i think mine's a 66T spur...trying to turn an MBX4 into EP too.. ;) any suggestions on how with spur to use? 48 pitch? 64 pitch? 32 pitch? tkss!!

[pinolelst]

do this maxamps lipo batts have the same size as the stick packs?as u can see my battery tray can only fit matched packs or stick packs..
Hello
You'd have to go to their site for the dimensions to be sure.I know only that a 4400 mah 3s lipo I have fits in the battery tray of my TC3 and my xxx-t MF2 with a snug fit.
Clamps: I'm using fine designs motor mounts in my LST and Cen Matrix conversion.So far they've worked well in the LST but I haven't had the chance to run the Matrix yet as I'm still waiting for the motor,,,Chinese New YEar has screwed up Feigao motor shipments until March from what I've been told. :( . I worry a little about chassis flex in the Matrix and how/if it will affect the spur and pinion but I won't know till I try.If worse comes to worse I'll make a mount that supports only the front of the motor at the pinion and attach it to the diff holders perhaps and the chassis locally.

Hope this helps

pinolelst

[badboy2]

In my case I'm still using stock spur with mod1 pinions 5mm and the mounts are from kershaw designs.

[nitro_newbie]

http://img363.imageshack.us/img363/4341/dsc02540to6.jpg
http://img159.imageshack.us/img159/5047/dsc02538xj0.jpg

heres my set up now im only rnning 2x3800mah and it lasts 5-8mins im not sure if thats due to over used batts or its really like that..


hey badboy2 what is that radio box? is that for the savage specifically or is it custom? looks cool is it from the x? thanks alot

[badboy2]

its from the savage x i replaced the s-25 radio box with a sav x box..

[SCHMACH]

i've converted a lst,revo,jato and a academy 1/10 4wd stadium truck...i got some pics of the lst and revo

[badboy2]

U must have deep pockets ..I'm jealous, do u run lipos?

[SCHMACH]

not yet...i don't have deep pockets either..i sell the nitro stuff on ebay...form the lst i made back $345 and traded the radio to my friend for a paintball gun...the revo i think i made $200 back

i've also got a jato that i converted to electric that i'm selling...it will be in the for sale section later today with pics

[badboy2]

so those trucks on the pix are all sold?or you're sellin some?which conversion did u use on the revo?how much did it cost for the conversion?

[SCHMACH]

no i meant that i sold the nitro stuff that came in the trucks right after i bought them. for the revo i made a carbon fiber plate chassis that sits on top of the stock chassis...the chassis is as wide as an emaxx chassis and i used the battery boxes from an emaxx chassis...i cut them out with a dremel tool

[badboy2]

can u show pix of revo and lst chassis ..im just curious.

[badboy2]

i forgot to ask this to the guys that uses lipos..do u know if theres a limit on how many packs does a quark 125 can take?will a 4s2p be ok on quark 125?

[badboy2]

are u done with the mgt conversions?any pix?

[Maxx42]

i forgot to ask this to the guys that uses lipos..do u know if theres a limit on how many packs does a quark 125 can take?will a 4s2p be ok on quark 125?

The quark 125 should be able to handle up to 6s lipo @ 125 amps continuous. I run my brushless MGT with a schulze 18.97kw on 5s lipo and a wanderer 9XL.

[badboy2]

maxx any pix of the mgt ?

[Maxx42]

maxx any pix of the mgt ?

I'll post a few soon. I'm not much of an artist when it comes to paint schemes (this one is all black with tinted windows). I also changed the gearing to 18/49 with the tranny locked into first gear (simply removed the high speed gear).

[Maxx42]

Here are some pics.........

[badboy2]

you didnt want the 2 speed?

[Maxx42]

you didnt want the 2 speed?

When the high speed gear kicked in, the truck would wheelie pretty hard. That gets old really quick when you're trying to race around a track and you can't accelerate out of a corner without having the front wheels on the ground. Besides, the way I have it set up it still hits at least 35mph which is a good speed for racing (also the acceleration is very good). I gave it a good test run today out at the park and it performed very well - not as well as my brushless maxx, but very well. When I race it in competition, I'll have to change the moabs back to 40 series crimefighters, and then change the gearing accordingly to get the same speed (although it will probably accelerate a bit better with the reduction of rotating mass from that change in tires ;) ).

[badboy2]

my sav does that too i get massive wheelie when i hit 2nd gear..i thot changing cb and spur combo would eliminate too much wheelie but it didnt..unless i got the wrong combo (18/49)..

[elmo_cecil]

her eit is first try MM ESC and KB 1700KV and 4S Li ion...

[badboy2]

did u build your own motor mounts?

[elmo_cecil]

yeah 1.5" AL angle iron... and a drill press

[badboy2]

Do u have a spare? ;)

[elmo_cecil]

trade you for a pinion... shipped ASAP 6mm shaft

[elmo_cecil]

so how are you guys mounting pinions... i bought some from tower but when i tried drilling them out to 6mm they were too small and didn't allow enough material for the set screw... then i went out and bought a 6mm 32p pinion and apparently it isn't the same 32p as AE uses... any help ideas?

[Maxx42]

so how are you guys mounting pinions... i bought some from tower but when i tried drilling them out to 6mm they were too small and didn't allow enough material for the set screw... then i went out and bought a 6mm 32p pinion and apparently it isn't the same 32p as AE uses... any help ideas?

You need a modular 1 pitch pinion gear to use with the stock MGT spur. There are a few places that sell them: RC Monster, Kershaw designs to name a couple, but I think they only have them for shafts up to 5mm. I'm curious to know what motor you are using that has a 6mm shaft. I mainly use feigao/wanderer XL size motors that have 5mm shafts. I'd like to get a Lehner 1950 7turn motor, but they are pretty hard to find right now.

[badboy2]

rcmonsters have mod1 5mm pinion gears..theyre much better than others..or u can contact starluck rche got some too.the motor on ur mgt looks like a nemesis or a wanderer which i believe have 5mm shaft..i have feigao 8xl and quark on my savage.

[elmo_cecil]

http://www.offshoreelectrics.com/proddetail.php?prod=kb-45-8xl

the motor i am trying to use is a beast...
tower sucks they say 32P every where for the mgt

you guys rock

[elmo_cecil]

oh yeah do oyu think a MM ESC will run that guy on 4s A123... or should i just wait for a pheonix 110 HV and go with 6-7s A123...

my other RCs are an RC18 with a BL 540 5700 kv and 2S A123 and a bl lipo micro-t.... sorta going with a theme

[elmo_cecil]

couple of pics.. still a work in progress.. mot is kinda big... hits tranny unless i used a a little bigger than stock... i think i should get a bigger spur to try to offest that... gonna get different wheels and tires... again want to up the cell count and go with a higer voltage ESC

[Maxx42]

That motor is huge! I'm using a 540C 9XL in mine and had trouble getting the gears to hook up at first because the motor has such a large diameter (hit the tranny case like yours). I found that the smallest pinion that I could use (mod 1) with the 49 tooth spur is an 18 tooth pinion and a 20 tooth pinion if I switched to the 46 tooth spur. Your motor appears to be a couple of mm larger in diameter than the 540C motors, but I also noticed that you placed your motor lower than mine in the chassis which should give you a little more clearance from the tranny case so you might be able to get away with the same gear ratio. With such a low kv motor, I would think that you should stay with the 49 tooth spur or even go to the 46 tooth spur and just get a larger pinion than what you have. If you are keeping the 2 speed active, I think that you would still need a larger pinion just to get enough rpms to get the high speed clutch to kick in.

Also, if you are keeping the mechanical brakes active in the mgt, to wait and get the high voltage esc and run it on 6s. That motor will be a true beast on a higher voltage setup. You might need the higher voltage to get the full performance out of your motor anyway (rule of thumb is to aim for an rpm of 30k to 35k on your motor for best performance / efficiency). I may have to get that motor for myself for that price and size.

[elmo_cecil]

yeah $75 i figured i had to try it... it is recommended to a max of 40k rpm... diving by 1700 rpm/volt... i figure it'll handle 24V wich gives me approx 7.2 S lipo so with voltage drop i figure i could do 8S li-ion... wich the phoenix will handle... it is also recommend to be limited to 3000watts so at 25v that worked out to 125A... now tower got this ESC http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXMYN9&P=7 that is rated 25V @ 140A burst.... but it is $135 VS $229 for phoenix... which is rated for 50V but only 110A... which ESC would you guys recommend... either way i ahve to get more A123s..... btw if you guys haven't tried A123s i recommend them highly.... 60C burst discharge (2300 mah so 138A burst... 70g per cell and loose cell 4 pk for like $89... do need a special cahrger that'll only charge 3S at a time but it does it in 15-25 minutes....

[Maxx42]

I think that controller is the same one that Dan from Kershaw Designs uses in his electric conversions. I'm not too familiar with it myself, but at first glance it looks similar to the shultze 18.97kw that I use, but it does have different specs so I think it only looks similar and is a different controller altogether.

I have never used the A123 cells before, but they do appear to be a good alternate way to go for power. I've been using the maxamps 8000 batteries for about a year and a half now. I like the punch they deliver and the long runtimes I get when using them.

[Maxx42]

http://www.offshoreelectrics.com/proddetail.php?prod=kb-45-8xl

the motor i am trying to use is a beast...
tower sucks they say 32P every where for the mgt

you guys rock


Any update on your MGT conversion?

[badboy2]

8000mah is that 14.4v or just 7.4?i still didnt get my hands on li-po batts too much $$ for me..still running my good 'ol 3800mah :(

[elmo_cecil]

awe man... second time i am writing this.... accidentally navagated off the page.... found a place to get pinion cheap https://sdp-si.com/eStore/Direct.asp?GroupID=812 .... ran it a bit with 4s2p and a mamba max... waiting on a venom air ESC 120A and another pix stix http://www.offshoreelectrics.com/proddetail.php?prod=rch-pistix so i can go to 6S2P li-ion.... motor runs with no vibration.... and wheelies pretty well... right now i have 5s2P and mamba with no BEC but hopfully the venom will be soon... http://www.one18th.com/gallery/albums/album01/bbci.wmv thats with stock tire.. now got some 40 series roadrage with 23mm hex and beadlock.... doesnt wheelie as bad... oh yeah no slipper and locked in 2nd

[Maxx42]

I tried watching your vid, but I couldn't get it to run correctly (I got the audio but the video didn't play). It's probably my pc as it seems to be slowly dying on me. It doesn't surprise me that the motor that you are using makes you wheelie so much. That thing must have tons of torque.

I think that I'm starting to like driving the converted MGT more than my brushless gorillamaxx. My Maxx is faster and more nimble, but I feel that the MGT handles better.

BB2 - I use a 2s pack and a 3s pack in series for 18.5v.

[badboy2]

man thats a huge motor!u can hook it up on a 1/5 scale hehee..

[elmo_cecil]

http://www.xoxide.com/swiftech-mcr80-qp-k.html
http://www.xoxide.com/thermaltake-p500-water-pump.html
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXRJL6&P=7
http://www.offshoreelectrics.com/proddetail.php?prod=kb-45jacket

this is my idea to counter act the flaming quark 80A in this video

http://www.one18th.com/GetGallery15648.htm