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The left side cover of my RD400 where the shift shaft comes through had worn into an oval allowing far too much play in the shifter. Yesterday, m in sc and I (okay mostly him) used his mill at work to open that hole up and sleeve it. A tack weld to keep it in place and some paint and it looks like it was manufactured this way.

Good, simple design to solve a frustrating problem. Thanks Mark!

 

Your right leg is gonna thank you for taking the time to do this. 

Man, Tim. That's bike come a long, long way. Congrats on the improvements!

It has working brakes now, too! Very fun Sunday for sure.

Can confirm - that grom rides like it was always designed to have that motor.

Just like you have 'salty' on yours, Mark. 

I'm in love with that RD 60! 

SCIENCE!!!

... and a clever, simple way to conduct the necessary experiments. Good one, Mark!

That's very dangerous information, Evans.    I do appreciate it, though.

I have plenty of experience wanting one of those adorable things.

All's well that ends well, right? Glad you got it figured out.

Man, what a cool little bike!

That is cool Matt!    Does the finished 3D pieces look and feel like the originals? Technology advances are amazing especially to old codgers like me that can remember telephone party lines, 8 track/ reel to reel/ and cassette tapes, etc. and... I can't forget pinball machines, Pong, Tank, and Atari!!   

it's not QUITE the same, but it's functionally good as it is. I will likely sand it a bit smoother and paint before using it.

As an aside, I literally have two reel-to-reel players in my house and am trying to find the 8-track player of my dreams. I'm a weirdo and like old technology.

Yeah, I'm pretty happy with it. The plastic is failing around the threaded inserts on my stock one.

Steve Burgess does a bunch of stuff like this. Last year I bought the hi/lo switch for my '73 RD350 from him - both the internal component and the external thumb switch. Works perfectly.

Some advice from Kevin Smith: