Skip to main content

Reply to "Handlebar Mounted Counter"

In my first attempt to make a 90-degree drive for the cable rig, I tapered the teeth on the Delrin gear. I met with limited success, but the process of tapering the gear meant many minutes with a Dremel tool. Engagement was poor, and the gears tended to bind somewhat.

My second plan was to bend the teeth on the metal gear 90 degrees. This required putting a z-bend in the chassis to add clearance for the teeth. This done, a new flat gear was fitted, and fiddled with it until I was satisfied it would never spin freely.

After realizing that the effective diameter at the line of action of the gears must be preserved, I bent the teeth to something resembling a 45-degree angle and adjusted the Delrin gear’s position as shown in the pictures below. The resulting assembly does not bind, and spins freely up to 1200 rpm.



The next challenge will be to attach a cable to the shaft with a sturdy connection.
Last edited by peteriegel
×
×
×
×