[CustomRCmodels]

I have to go here with the other guys ,
Tamiya 3 speeds are tough !
By all the crazy stuff I have done with mine over the years , I never had a busted one or issues with it !

But I did found over time several issues with these 3 speeds not being build correctly ,
( besides the deal with linkage , servos adjustments and such )
when I acquired used Tamiya semi’s .

Bend shift forks or worn bushing inside the shift-forks are a common issue for a not properly build or “high-mileage” 3 speed.
If you want to do an extra trick , you can bevel the tooth-flanks on each gear which is used for the shifting . Then you can shift this 3 speed even under load and with full throttle ( even thought not recommended way of driving ! )

It’s all a matter of how much care you take during the building process .
A few years back , during the first Indy show , I received this nice comment from several truckers :
“ how come all your trucks are driving so smooth ? “

Take your time building stuff and during the building process check things out .
If you get a ready to run vehicle build by somebody else ,
check it out real good , if the builders reputation is questionable , rip it apart and start from scratch ( that’s what I do when I buy used stuff )
Even with new stuff , just because it’s new , it doesn’t mean it’s right .