Getting the Pinion to stay on the motor shaft?

[Thirdgen89GTA]

I did have one video in my other thread. But I was the driver and the cameraman so its not very good.

I tried to make another one today in landscape so it would look better (aka normal aspect ratio) but daylight was waning and then someone called my phone and I lost most of the daylight I had.

Now that I can actually drive the car for longer periods I can definitely see that I need to up the pinion size. I ordered a 16 and 18 today. Figured I'd try the 16t pinion and see where i end up, and if it was too hot/cold decide if I needed to go up more.

Motor was warm to the touch (hard to truly tell by hand in this cold weather). I ordered a temp gun cause my old one for nitro's apparently no longer works. :(

Would be nice to get this sorted out.

Build thread:
http://www.rc-monster.com/forum/showthread.php?t=30843