Parts for hand ergometer (exercise bike)

[JAZZCNC]

With regard to current drawing for handle, is depth of boss (10mm) into tube enough or should I increase to 20mm?

Yes more the merrier I think considering the handle is 150mm long thats not much holding it.

The axial slot on the larger side of the boss is to allow the cross screws to clamp the outer shells of two 10x22x6 bearings. I copied this from an existing assembly which I couldn't dismantle. Will this work or does it need a slot radially where the clamp section meets the 64mm dia, 3mm thick hand guard section to allow the clamp to, well, clamp?

Know what you mean and yes it would clamp better if this was slotted.

I'll PM you Email address.