Author Archives: smartbikers

Spoke to Mark from Machine shop Suggested Laser cutting to save money and time Machining pieces would take roughly 1 week Meeting with Professor Kenning Suggested making another prototype before machining final design Test out new changes Mentioned that creating a stand for wheel instead of using bike was okay Since the main project is …

Continue reading “Tuesday, Feb.5.19”

Finished: CAD Found Gear sizes To Do List: BOM DigiKey order Belt order Find required belt specifications Submit work order Waiting on response from machine shop

Continuing on CAD Holes for mounting on cog coincide with previously made slots Need to make adjustments Continuing with general fixes for bike mounting

Took apart freewheel Taking apart the freewheel allows us to reuse parts instead of machining a new freewheel/mount for the gear mechanisms to attach to the shaft Need to make CAD changes to mount mechanism to cogs

Decided to bolt front and back plates of gear mechanism together Maintains constant axis of rotation for both plates Will require more bolts

Continued on CAD Gear mechanism needs to be bigger than expected Will reduce desired supported gear ratio range Added slot on gear mechanism to account for power transfer protrusion on wheel shaft

Continued working on taking apart freewheel Made some progress Pieces seem to be turning

Continued trying to take apart freewheel Doesn’t seem to budge May need to machine custom freewheel Continued working on CAD

Planning E5 Machine shop Return borrowed tools Got a few leads for potential machine shops to outsource the machining parts UW Bike Shop We asked about taking apart freewheel Needed to ease the attachment of our gear mechanism onto ratcheting mechanism They advised that it would be extremely hard Suggested buying freewheel or buying new …

Continue reading “Wednesday, Jan.16.19”