Yeah, especially with rather direct-drive vehicles.

I think I might go to a better motor. Any suggestions? I've used the Neu motors in the past and really like them. Oh, and do you think the change in pinion will make much difference?

Do you know what gears are used in the differential etc?

If you give me more details, we can from the desired topspeed what gearing/motor you need.

Nothing wrong with the MM motors but 3s lipo on a 5700 is a pretty hot setup. A 4600 would be a much better match. If you get a Neu motor I would do some calcs to pick a good kv for your setup. Figure the final drive ratio and rpms expected, etc...

Your gear ratio doesn't sound too far off... should be about the same FDR as a regular 1/10 truck, but you do have 4wd and it's no doubt heavier than say a T4.

do he MM motors use segmented magnets? i presume not?

No, I don't actually. However, on the replacement parts list it lists a final gear 40t and a final gear 13t. Beyond that, I'm at a little bit of a loss. I haven't had it for that long and haven't opened up the diffs yet. I'm pretty sure it's the typical spider diffs. Probably the same as the Lightning Truggy but smaller. Sorry I'm not more help there.

It's heavier than a T4, but I don't know how much more. I'll have to weigh it. I think it's about 5lbs.

Let's see if hb provides exlploded views then.. Hang on..

Personally, I dont like to use none segmented motors in racing.
A segmented motor like a Neu or LMT 19 series would take the heat of a flaming race.

The motor inmho, is not prepared to fully operate in a perfect condition in a nitro car even if it was a 1/10 scale machine, but if you want to make it do its job, a highend motor with a high turn winding is very good actually. Consider a motor with a 2700-3700 rpm at 14-15 volts for good speed and temp.

You can go for a Kontronik Twist-33 or Twist-37 motor. They incorporate segmented rotors, built in heatsink and nicely priced.( between 140-160 dollars). They're 480 size motors, but will perform way better than the Mamba Max motors.

Here's a pic

Thanks for the info Captain. But what exactly do you mean about the Mamba ESC not working best in a nitro vehicle?

I mean the motor and the controller wont work as effecient as they are supposed to in a lightweight T4, B4, Touring cars or pan cars or even an electric 4wd buggy.
The nitro stadium truck you have is specifically designed to handle the power of nitro engines. The drivetrain is thus heavy and sturdy and your 5400 motor was wrongfully chosen for the conversion- its for electric rigs meant to go head to head with their nitro counter parts. You need a much lower KV of a highend motor.
I dont have any experience with the Neu, but since they do have segmented rotors, they're up for the job. They're very popular and powerful as well.
As for the Lehner.. I would choose the 1920/9 or 10 turn motor.
The Kontroniks are good for your case, too. You can either get the Twist33 or 37 or go for the big Kontronik FUN500-27 motor ( same dimension as the Lehner and Mamba Max), but with 5mm shaft.
The Lehners Neus and Kontronik's big motors were actually made to replace a nitro engine in a heli or a big air plane and get a performance as good as a nitro engine or slightly better.

No they don't Serum, looking at the article in rc car action and its solid.

Captian, not sure how the kontronic would work with a mamba, but the mamba motor works real good with awsome power throughout the pack, I've never had a cog, thermal or fade of any kind with this setup, even with back to back packs.

Yes i do race it when its not breaking parts(my driving)

I believe you Crazyjr. I dont think the 5400 would actually make a good performance in Sower's lightning stadium truck, though.
He either should go to the 4600 or simply pick up himself a good segmented motor and couple it with the Mamba Max controller. It would ease the controller a bit.
There's quite a difference between your T4 and his truck, if you can see what I mean.:)

I have to seriously disagree...First off, its 5700, not 5400, and second, I don't think the truck has anything to do with how "efficient" the controller runs. Yes, a motor with segmented magnets will be a better motor, but at the least, correct gearing should help him some. It sounds as though it might be under geared since if it was over geared the controler wouldn't be hot...

3s Lipo on a heavier truck running a 5700 kv motor is a bit much. Running the 4600 motor on 3s Lipo would be better suited, but as crazyjr said, something in the mid 3000s should run quite well.