[apalrd]

Originally Posted by Alex.q

Sorry for reviving an old thread, but I was looking at your CAD and had a question about it. On the wheels, the hub that you use to attach the wheel to the axle is right up against the bearing blocks. How did you attach this hub to not need space for the head of a bolt to attach it to the wheel? Also, there doesn't appear to be anything to prevent the sprockets from moving along the axles (in the axial direction). Is this accurate?

Thank you in advance for answering my questions and more importantly thank you for posting your CAD.

They're there, just not in the CAD.

The hubs are countersunk and we use flatheads, so there is not much to interfere. The bearing blocks are taped for a #10-24 bolt, and the bolt heads are on the other side (not the wheel side). We put in a single wave washer between the bearing block and the wheel hub.

On the sprocket side, we have a (lacking knowledge of the actual name of the part) press-on shaft collar.