Custom Mountain Bike Suspension Yoke

Project Goal

• Test CNC capabilities and quality of JLC PCB's CNC machining service

The part I decided to design is a replacement suspension yoke for my YT Capra Core 2, here is the final result mounted on the bike:

The Process

• Took off existing suspension yoke from mountain bike
• Re-model it in Solidworks
• 3D print to test fitting on bike
• Generate engineering drawings for tolerances and threads
• Upload to JLCPCB for quote - it was ~$60 USD
• Wait 1.5 weeks for it to arrive

Results

The machined yoke from JLC PCB (left), the existing yoke from factory (right)

• The original yoke was made from Aluminium, not sure the specific alloy so I requested 6061 as most bike manufactures use that
• The mass is ~50g lighter than the original yoke - due to a slightly modified design
• I have been riding it and so far no issues. Simulation indicated all experiences loads are within the capabilities of 6061 Al. 

CAD Model