Vendetta / Motor / ESC question...

agarabaghi · 05-09-2009, 06:12 PM

So i got a rolling chasis from a friend, and started looking through the scrap box.

The electronics are as followed:

Receiver: DuraTrax RX-100 AM 2-Chan Receiver
ESC: Futaba MC 230 CR Fet Speed controller

Motors (so far they have all died):
Frenzy 270sk from a losi mini lst
AE Super 370 motor, got it for $11 from LHS...

2200mah 2s Lipo 7.4v
Spur: 48T
Pinion: 17T

It runs great when it runs, but usually get a hot, and then when i go to try it again (after a recharge so the car has cooled down) nothing. I has the LHS check the frenzy and they said it didnt turn over, and now the AE engine is doing the samething.

The esc im using Futaba MC230CR (http://www.futaba-rc.com/radioaccys/futm0922.html) came from a scrapped TC3 i got from a friend. It works in the TC3 but that is a larger scale... is this ESC frying the motor by just being for the wrong scale car?

Is there a motor i can put in that will not fry (as quickly) or does the ESC need to be changed in order to use such a small motor?
Why am I frying

Bermbuster · 05-10-2009, 04:52 AM

Quote:

Originally Posted by agarabaghi

So i got a rolling chasis from a friend

Motors (so far they have all died):
Frenzy 270sk from a losi mini lst
AE Super 370 motor, got it for $11 from LHS...

2200mah 2s Lipo 7.4v
Spur: 48T
Pinion: 17T

It runs great when it runs, but usually get a hot, and then when i go to try it again (after a recharge so the car has cooled down) nothing.

Is there a motor i can put in that will not fry (as quickly) or does the ESC need to be changed in order to use such a small motor?
Why am I frying

The motors you are using are undersized. A vendetta needs a 400 sized motor.
Get a VX3 (made for the detta)
There are others...Atomic makes one (open endbell)

If you dont want the motors to burn up you have to check temps and gear down....keep a brushed motor under 150 degrees....

agarabaghi · 05-10-2009, 06:15 AM

thanks.
the vr3 is the upgraded stock motor right?

Im going to see if any local shop carries it.

Hide · 05-10-2009, 06:45 AM

You are also overgeared, drop the pinion by a few teeth.

agarabaghi · 05-10-2009, 07:17 AM

ok, so like an 11t pinion?

btw im running 45t spur and 17t pinion

Hide · 05-10-2009, 09:05 AM

I'd go for 13/49 personally.

agarabaghi · 05-10-2009, 09:17 AM

i was gonna place an order on towerhobbies for some parts and the VR3. i dont see the 49t spur...

i think im gonna run 11t and 45t spur on the VR3

any change of cooking the VR3 with a lipo or should it beable to handle it?

Bermbuster · 05-10-2009, 02:48 PM

Quote:

Originally Posted by agarabaghi

i was gonna place an order on towerhobbies for some parts and the VR3. i dont see the 49t spur...

i think im gonna run 11t and 45t spur on the VR3

any change of cooking the VR3 with a lipo or should it beable to handle it?

It is not the lipo cooking your motors it is the temps they go to from being geared too high....

I see your going to gear down so when you do after a 5 min run check your motor temp...if its cool you can gear up....
Just remember that a few things besides gearing will effect temps...
tires (traction) running surface and the mechanical set up of the vendetta
gear mesh, bearing condition and diff tension....

agarabaghi · 05-10-2009, 04:33 PM

Yea i just did an overhaul on all the moving parts, and cleaned / lubed everything. I think with the stock motor geared to 15t / 45t spur it should be a decent basher.

What happens if you run 3s lipo to a motor like the VR3?

Bermbuster · 05-10-2009, 05:56 PM

Quote:

Originally Posted by agarabaghi

Yea i just did an overhaul on all the moving parts, and cleaned / lubed everything. I think with the stock motor geared to 15t / 45t spur it should be a decent basher.

What happens if you run 3s lipo to a motor like the VR3?

I never tried it....It will run real fast until it dies....

agarabaghi · 05-10-2009, 07:32 PM

sounds like a good test for one of those hyperion 3rd gen vx batteries...

agarabaghi · 05-11-2009, 08:43 AM

HYPERION G3 VX 11.1V 3S 1600 MAH 35C/65C LIPOLY PACK

just ordered for $40... ill let everyone know what happen by the end of the week =P

Dieselpower · 05-11-2009, 09:08 AM

You're probably going to want to stock up on some extra motors. The VR3 will run really, really fast on a 3S, but will not last long at all. Keep a close eye on the temps of your ESC and motor.

agarabaghi · 05-11-2009, 09:20 AM

how would the ammo motor handle the 3s?

ammo 28-35-3900

burnineyes · 05-11-2009, 09:55 AM

awesome