Pro10noob

iTrader: (13)

From what i know with the LRP ESC they do the same.
When rotating the motor you should see the leds blinking.

regards Roy

briankstan

iTrader: (8)

I have a few questions for a friend of mine. He purchased a new LRX SSX stock spec v.2 and a Vector X-12 17.5 motor combo for running in our 17.5 TC carpet class. he has the car geared with a rollout of 4.0 the chassis is an Associated TC4.

the car ran fine in the first couple of qualifiers, but was getting really hot. in the 240° range. I'm running the same rollout but don't see anywhere near that temperature I'm more in the 170-180° range with my TC6.

there isn't anything binding as we checked it without having the motor installed and everything was running free and smooth.

so here is what is happening. when sitting on the bench the car will power and accelerate. but when you set the car down it will cutout when you accelerate to full power, then nothing. He thinks maybe he smoked the motor, but I have read that these X-12 motor are pretty heat resistant. I know his was on the hot side, but would it cause they symptoms that he has?

could it be a problem with the ESC? Motor Rotor? or possibly a problem with the sensors in the motor?

also any idea why it would be so much hotter while running the same rollout as other cars?

thanks in advance for your help.

geeunit1014

iTrader: (14)

Definitely sounds like a sensor problem. Check the connections of the wire, and try a different wire. Ive also had one sensor go bad in the motor. Double check all the solder connections to the power wires, running that hot could expose a bad connection.

As for why it runs hotter, there could be a few factors. Im assuming the motor timing is the same on the 2 motors. The first thing that comes to mind is airflow. The motor is more tucked in and hidden if you will on a TC4 vs the 6, and doesnt see as much airflow. The other thing it could be is its just that motor. A great example is the Sonic's in my and my friends TC6's. Im at a 3.76 w/ 40* of timing, and I run around 160-170. He has to run a 4.0 and 30* to get the same temps. Motor to motor, motors are still different.

briankstan

iTrader: (8)

thanks Mike, I'll pass the info along to Russ. It'll give him somethings to check out before spending money on anything or having to send it in.

YR4Dude

iTrader: (44)

What benefits do I get running an LRP motor(17.5 X12) with an LRP speed control(SXX Comp. V2) vs. running the LRP motor with any other speed control or vice versa (LRP speedo with some other motor)?

DesertRat

iTrader: (2)

I cant speak for absolutely every instance, but I ran an LRP X12 13.5 on one cell with a Novak ESC for a few months (not by choice, I had to send the LRP back as it quit one day) and during that time we went from running boosted 1/12 scale to blinky 1/12 scale. Once I got my Stock Spec V2 back from LRP and set to Blinky mode with no boost or torque-feel, the car had a noticeable surge about halfway down the back straight compared to the Novak setup. Why? Ask LRP, but it was there I guarantee it.

Manson

I search a feedback about 12.0 mm rotor. I m trying to have a smoother 4.5 octa.

But i don't know if 0.5 mm make a big difference

Thanks

RedBullFiXX

iTrader: (34)

I had a 1s rotor in that motor some time ago, it makes a BIG difference, much smoother.
It takes away a lot of torque, for 12th scale it is a good trade.

Pro10noob

iTrader: (13)

Less torque more RPM.
So easier to drive

regards Roy

Manson

Ok thanks,
I would to know if it s a big or a little improvement

Pro10noob

iTrader: (13)

Depends on what track you drive.
If it is a big track i would say, go for the RPM.
If it is a small track where you need the power to get out of the corners, go for the rotor with the bigger torque(lager diameter rotor)

regards Roy

Manson

Ok thanks, i just want a smoother motor

Yokomo_Ant3

iTrader: (29)

What are your esc settings? The feel will smooth the motor out if you need it.

Manson

Ratio 8.0
Ddrs 3 with - 100 throttle expo on my radio
Boost 0
Turbo between 30-40
Turbo slop 3°/0.1s or 6°/0.1 s, i m trying some different turbo setting
Turbo delay 0.1 sec.

On this videos i ve the turbo set at 40 ° with turbo slop 6°/0.1 sec

http://www.youtube.com/watch?v=i6xz_zWrXeg

I don't say that the x12 isn't smooth, i just want to reduce some torque

Pro10noob

iTrader: (13)

Isn't it better to run higher boost en less turbo?
At least this is with Tekin.
never run higher turbo then 12.

regards Roy