Spur gear spring

[Bushmonkey]

Hi all. Currently building my car but have an issue with my spur gear spring. Guide states to tighten until the shaft is 2mm out of nut, but when it gets this tight, I get wobble. 1mm and basicly no wobble

 

Without the spring it's perfect so it's not a bent shaft.

 

 

 

Dodgy spring maybe?

Edited June 30, 2020 by Bushmonkey

[Garry]

Those are just ballpark instructions to get it to a point where you can run the cars and start adjusting it. My personal preference is to tighten it fully so its locked solid and no slippage then back off the nut half a turn nf do a full throttle launch , it'll probably wheelie so back it off another half a turn and repeat until it barely wheelies but doesn't audibly slip. I looks like there's sand paper in there instead of slipper pads so it'll tend to wheelie no matter what setting.

[Bushmonkey]

That's good, it's pretty solid tbf already, supose it's easy enough to adjust. Is a little wobble ok??

 

It's a smooth gasket, same color as sand paper though. 

[Garry]

Side to side movement is far from ideal but we're dealing with plastic parts and some companies have large tolerances which are acceptable. Gernrerally a gear will find its own path, as long as the mesh doesn't change it should run fins dor a while. Stock up on spare spur gears just in case.