E-Maxx,12 cell +18.97KWF+Basic XL3600 review!!!(+speed test)

[mtrsprt]

Well, got it all soldered together today. ESC came in today.
First of all, here's a quick idea of what components I am running.

MX-3 radio
5645 digital steering servo
Dean's all around (using 12awg Wet Noodle wire,and Dean's solder)
Lehner XL3600 motor
Schulze 18.97KWF ESC
1200mah Ni-Mh receiver pack
14/66 gearing
12 GP3300 cells(unmatched) in series.
Totally stock E-maxx otherwise

The ESC works decent in forward, but brakes are lacking because of the rather large heavy vehicle it's trying to stop.

The smooth start on the 18.97 is rather nice, but it still doesn't take much to flip it on its back instantly. ESC after 10 minutes of running around was a mere 109*F. Motor was showing 137*F. Mind you, its about 88*F out right now, and closer to 92*F when I tested it out. Even with the very high torque steering servo(160oz),the E-maxx is tough to handle at high speeds on asphalt. The tires stick like glue, so it's tough for the servo to center itself quickly.(I am using the rugged Kimborough truck servo saver FYI also).

The traction of this truck is amazing. It can climb steep inclines with ease, and is very stable on it's edge. Turning the bigh tires is a workout for any servo in this truck. I can't believe how heavy this truck is when it's fully loaded with packs. Got to be around 12lbs or so.(matter of a fact,I will go weigh it. 11lbs 6oz. Looks like the body posts are going to be a common replacement part. After 2-3 flips and slides on its back, the body clip bosts were rubbed down pretty good. Transmisson works smooth(a little noisy, but no biggie). 2nd gear is a little quieter. I got about a 12mph increase switching from 1st gear to 2nd.

OK speed test.

14/66 gearing. 1st gear: 26.3mph, 2nd gear 38.0mph. The packs had about 3-4 minutes of runtime on them already, so I may have been able to pick up a mph or two with freshly peaked packs. Speed test was done with Garmin Geko 201 lightweight GPS unit. I may just leave the 14T pinion on there.....

Here's a pic of the setup. Sorry for the wiring mess, it will be neatened up soon!

Cory S.

[itdood]

38 MPH!! :eek: nice


Good info, thanks for posting. And the wiring isn't a mess, looks like good work to me, just needs cable ties but the custom fit is very nice.

The Deans solder is Tin / Silver, (96 / 4) correct? Was that tough to work with, comapred to Tin / Lead 60 / 40?

[bomb-proof]

Dont let schulze see those wires, they are about 3 feet too long. Your total wire length shouldnt be over 10cm(counting battery bars,jumpers,etc.)

[mtrsprt]

Dont let schulze see those wires, they are about 3 feet too long. Your total wire length shouldnt be over 10cm(counting battery bars,jumpers,etc.)The #1 reason why Schulze tries to have installers keept he wires short is because of frequency interference. In R/C planes, as you know, interference is not a good thing at all.

Also, Schulze is refffering to standard 13-14awg wire for it's installations. I am using 12g. The wiring like I said, is not totally permanent. I just need to find a location to mount everything the way I like it, before I shorten and neatin it all.

[mtrsprt]

38 MPH!! :eek: nice




The Deans solder is Tin / Silver, (96 / 4) correct? Was that tough to work with, comapred to Tin / Lead 60 / 40?Its actually 98% tin, 2% silver. It melts at a low temp, and is very easy to get to stick to anything. Only took me 15 minutes to solder and heat shrink 8 connectors!!!!

[starluckrc]

The #1 reason why Schulze tries to have installers keept he wires short is because of frequency interference. In R/C planes, as you know, interference is not a good thing at all.

Also, Schulze is refffering to standard 13-14awg wire for it's installations. I am using 12g. The wiring like I said, is not totally permanent. I just need to find a location to mount everything the way I like it, before I shorten and neatin it all.

I disagree. The problem with long wire leads is inductance that builds up. Connect the packs and get a nice voltage spike that could overload the input of the controller. Schulze added extra input capacitors to the 18.97kwf specifically to help combat that.

[mtrsprt]

I am sure the inductance bewteen a 7" 12awg wire and a 4" 12awg wire, would almost be unmeasureable. Maybe in 14-16g wire, it could pose a threat though.

The capacitors are a great addon, but damn, they make it that much harder to find a spot for the ESC.

[mac0326]

If you don't have good brakes, I would check the dil switches. The controller may be set up in boat mode, which gives very little brakes. In car mode, the brakes will flip the truck on its lid.

[mtrsprt]

All dip switches are on, except for the last one.

[TheSteve]

From reading the manual(maybe I picked the wrong one) I thought that DIP 1 should be on and DIP 2 should be off to select car mode.

[mtrsprt]

Yeah, I am not sure. Schulze should do a better job on timing setting diagrams IMO.

I got the manual right here, and its not the best thing to decifer.

[ElectricThunder]

That's a nice looking setup. Pretty clean for an "unclean" version if I must say so. Where'd you get the schulze from, and how much? :D

[Popop]

Just curious ...
What's the weight ? and the runtime ?

Thanks a lot
Popop

[mtrsprt]

About 11lbs 5oz fully loaded. About 12-15 min runtime bashing around.

[Popop]

OK
That's pretty good (efficient) for the weight

(5.150g)

[mac0326]

If all the switches are on except the last one, you are in boat mode-very little brakes. Move it to the off position and you will stop on a dime.

[mtrsprt]

Yeah, I fugured it out. I think it wasd the second or third one down needed to be off. Now my brakes are insane. Truck almost flips over forward,(probably would if I wanted it to), but I want to keep the stress on the driveline to a minimum.

[OptimaMan]

I'm surprised you didn't go over 40 mph with this setup. The 3100XL with 18 tooth pinion used to take me a tad over 40 mph. Probably the gearing... BTW, when I lubed up those stock sliders, I gained 1 mph!

[glassdoctor]

Yeah, the brakes... I still remember very well the first time I hit the brakes on my Hacker BL maxx. It flipped right over onto it's top and slid like 30 feet down my driveway. I didn't have the body on, and I still have a nice little scratch on my C50 to prove it. :) Fortunately the body posts absorbed 95% of the damage.

[OptimaMan]

Yeah, but you have to keep on buying new body posts over and over again. I probably got at least 10 sets last year.

[glassdoctor]

Ha ha. I decided to dial out the brakes instead....

I think I had the brakes set around 10% when I raced my maxx.

It really is hilarious to watch a truck do 360* front flips though.