One thing that I have found frustrating on the HJ Jig was holding the chain and seat stays in place for tacking. Seat stays in particular sorta want to flop away from the frame and trying to hold them with one hand while tacking with the other was not producing good results.
I recently made a JIG attachment for my Henry James Access 65 JIG. I also created a through axle for the JIG. I also made up a way of indicating effective chain length and chainring clearance with a virtual EBB and other drivetrain bits so I could dial in the perfect chain length. The 75mm block on the plate also gives me a reference for the proper 29er tire clearance. The mods have worked out very well and was super easy to create. I figured that I would share the mods here in case other are looking for ideas.
Same plate rotated to seat stay mode after I installed the virtual tire.
The next modification that I am thinking about is a better way of holding the seat tube and indicating the proper seat tube angle. I have some vague ideas in head but would love to see the mods others have made for the HJ Jig.
If you have mods for the HJ jig please share some photos.
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