501x - Motor Gearing & Timing?

[JonB]

Hi,

Ive just got myself a 501x and am a little unsure about gearing.

I have fitted an 87t spur gear (instead of the kit 96t) and am running a GM 5.5 Sintered Rotor brushless motor (equivalent to the Orion Vortex I think) and a Nosram Matrix Evo 2007 Edition ESC.

Couple of questions:

1. What size pinion would be a good starting point?
2. Do I need to adjust the timing on the motor to run correctly with the Nosram ESC and if so to where? Ive read some conflicting answers on this.

Cheers Jon

[jimmy]

I'd leave the timing - Woody ran this motor for the first time last weekend with the same controller with no problems.

I run 15 / 16t pinion with a nosram 5.5 - I think Stu put on a 17 with the Orion 5.5

[chrispattinson]

I run my 501x with novak brushless motors. I am not sure how they compare to the Orion ones.

5.5 Novak 87/18
4.5 Novak 87/17

The car is very quick, and doesn't get too hot, though I am very smooth on the throttle.

[JonB]

Cheers guys - thanks for the prompt replies.

I think I will go for no timing change and a 16t pinion for starters and take it from there.

[aland]

I have the follwing setup:
LRP Sphere 4.5
GM speedo
Kit spur 96
Kit center pulley
White kit diff pulley rear
Black kit diff pulley front (one way)
6 cell

Now I have for sure not tried enough to find the right gearing but I would appreciate if you could give me a good start.

I read that the car should be uncontrollable with this type of motor. Well I'm for sure not trying to achieve that I didn't just believe those comments. I have run the car with a 18t pinion now and the car behaves quite well. Not too much power in any way. Therefore I would like to know if I'm totally wrong with the current gearing. Should I gear down? Smaller pinion?

Thanks in advance!

[steveproracing]

Why do people insist on using the 87 spur! It has no positive effects on handling/balance and only reduces the number of ratios you have in your arsenal especially at the low end (needed for brushless) following a conversation with jurgen at lrp the 4.5 motor should be geared around 17t/96t with the ability to go 1tooth up or down on the pinion for track tuning.