Twin 7700 Maxx setup? - RC-Monster Forums

Nick · **Twin 7700 Maxx setup? -** 03.30.2007, 05:16 AM

I've got a stock Maxx on the way, so nice and light, I was wondering what twin MM7700s would be like 3s1p each side?

The truck would weigh stock. So I can't see it having much trouble?

Sylvester · 03.30.2007, 08:22 AM

Stocker is actually pretty beefy when it comes to weight! And twin MM7700 on 3s is gonna be fast, but will heat up the motors FAST. 7700*11.1 = 85470.

jtracker · 03.30.2007, 09:19 AM

I have run a dual mamba max 5700 in a G2R e-revo and it was a little faster than an HV-maxx. Motors actually didn't get too hot either:027:

skellyo · 03.30.2007, 09:28 AM

I'm curious why you would want to spend more than necessary? Two 7700 combos is a good bit more expensive than a MM, 540 XL motor and UBEC. Not to mention, they have far less torque than you'll need to push the Maxx adequately.

Sylvester · 03.30.2007, 09:39 AM

Maybe he has them in his posession already?

skellyo · 03.30.2007, 10:31 AM

Quote:

Originally Posted by Sylvester

Maybe he has them in his posession already?

That's possible, but I still think it's a bad idea....even moreso on 3S. That's a couple of things that Castle says not to do...don't put a MM combo in a 10th scale monster and don't run 3S on a 7700.

BP-Revo · 03.30.2007, 10:34 AM

Yea I wouldn't do it...if I were to ever run dual Mamba's in a Maxx it would be two 4600's on 4S or maybe a two 5700's on 3S.

Serum · 03.30.2007, 10:42 AM

the 7700 isn't the motor to put in a maxx. Not in dual form. It hasn't got the torque to keep its head cool.

jtracker · 03.30.2007, 10:45 AM

Ya I only did it cuz I had 2 of them and their was a race coming up and we broke the motor shaft on the HV-maxx the weekend before.

Serum · 03.30.2007, 10:52 AM

Have you got fans for the controllers and heatsinks for the motors? with tiny pinions and a large spur you can try..

Nick · 03.30.2007, 01:14 PM

Thanks guys, just looking for something different really than the usual XL if anyone has any suggestions.

I like to be different and already have 1 MM kit, found another one going cheap.

03.30.2007, 01:41 PM

I would say 2 - 4600's

skellyo · 03.30.2007, 02:00 PM

Quote:

Originally Posted by Nick

Thanks guys, just looking for something different really than the usual XL if anyone has any suggestions.

I like to be different and already have 1 MM kit, found another one going cheap.

Maybe try 2 MM ESC's and 2 540 8S motors? With the right gearing, those would surely push the Maxx.

pinolelst · 03.30.2007, 02:02 PM

From what I've read it's not so easy synching two motors to a common spur and maintaining efficient running of both motors.
Good Luck

Steve

03.30.2007, 03:22 PM

I don't think that you'll be able to gear the 7700s to run without thermalling the esc. I ran a 7700 on 3S in a T4 and wound up having to go with the largest spur I could get, with the smallest pinion I could use and get a decent gear mesh, and had to go with the smallest tires that I could find; all just so that it would stop thermalling. Perhaps you have more gearing options with the emaxx.