...professional, hobbyist, and aspiring. I am having difficulty with the handlebars on my hand cycle. The handlebar is held on each side to the spindle by clamping with a screw, as you see here.
Well, it keeps slipping. This results in the spider sliding out on the other side, which takes the chainrings out of line with the derailleur, and then I can’t shift properly. Plus, the bearing cassettes start to slide out too. But I’ve already tightened it as much as it will go. Here it is when you slide the handlebar off more.
My idea is to put a shim of some sort in there, a sleeve that will increase the diameter of the spindle and then tighten the handlebar screw over that. My questions to you are thus:
- Is this a good solution?
- What material would you suggest I use if it is a good solution?
- If it is not a good solution, what is an alternate one?
Thanks gang!
UPDATE: more pics.
I don’t think the splines were ever meant to fit grooves for grip. Perhaps to prevent seizing? You can see the clamping collar is bent from being tightened as much as it can be.