olly986

I am sorry Roger but I cannot visualise how a pinion does not fit a motor shaft and spur gear on a TC6.

Maybe make a pic of your pinion?

olly986

and I am running on long sweeping tracks also, 2 different ones , one even more 1/5th scale than 1/8 1/10 scales ic and 7.57 is very good and fast.

roger999

iTrader: (13)

ok, will try 7 when ill be on the track. About pinion will do pics evening.

artwork

iTrader: (88)

I am pretty sure this is a motor problem...I used to have issues with this with some of my speed passion motors a while back. I think some of the screw holes are not tapped very straight...trying turning the motor and using other holes if possible.

Danny-b23

iTrader: (3)

Yeah, this was an issue for a very short period of time. All fixed with the new batches though.

roger999

iTrader: (13)

maybe guys, but that is only on few pinions, xenon and kawada pinions are ok. they fit no problems because xenon have 4 holes and they are thinner on head, same with kawada.

geeunit1014

iTrader: (14)

I saw on my friends car, LRP motor, PRS pinions, that the shank on the pinion was long enough that it didnt sit on the flat spot of the shaft. You would have to dremel the flat spot back a little bit farther. I seem to recall some issues like this a while back with Duo motors as well.

roger999

iTrader: (13)

that is only with 3 pinions what i have, so i thought easier will be order different pinions like xenon and i did it so the problem is sorted

thanks to everyone for help!!!

Maybell

iTrader: (2)

With some pinion/motor combos, you have to either chamfer the end of the pinion, or cut the shaft flat spot back farther so the pinion will align with the spur. This is because the motor is so close to center for great weight balance.

There is no need for this modification if using a Reedy Sonic, or LRP X-12 motor.

hanulec

iTrader: (28)

Yo Karl - u done with your car yet? Its been two hours .. what is taking so long?

geeunit1014

iTrader: (14)

You wont find him on here for a while, hes deep in the middle of nowhere in MD surrounded by various wrenches, greases and lubes...

hanulec

iTrader: (28)

Hopefully he can show tomorrow at Jackson.

Mike - when r u coming out again?

geeunit1014

iTrader: (14)

He will be there tomorrow fo sho. 50-50 chance I'll make it next weekend, but I will 100% be there for nats (only 2 weeks away!?!?).

lostinbaja

iTrader: (15)

My Brother had the same problem. If the pinion was properly lined up with the spur, the grub screw on the pinion would not tighten on the flat area of the motor shaft. Naturally he didn't want to buy another motor with a longer flat machined on the shaft or locate another pinion with a different offset that might work. He brought the motor to work and machined the flat on the shaft long enough to allow the pinion grub screw to tighten on the flat.

Molala4

can anyone tell me the dimensions of the hubs bearings? (bearings holding CVD in read hub and steering cup) and size of diff ball?