Square Taper Bottom Brackets Made Even Simpler! (Video)

Hot on the heels of my review of the Paul 100% Pure Cranks yesterday, in which I discussed the age-old problem of determining the proper spindle length for square taper bottom brackets, Luke from Soma Fabrications published a video showcasing a prototype tool they’ve been working on that seeks to provide easy answers. The tool, which has yet to be named, features cups that press in by hand to hold an adjustable JIS spindle that can be lengthened or shortened with a crankset attached to determine the perfect chainline.

I called Luke and spoke to him about the early prototype earlier today, and he stressed that they’re most interested in feedback and questions to help steer the design of the finished product at this stage. There are still some kinks and usability issues to sort out. Chief among them, in my opinion, is the issue of how to secure the drive-side crank arm to the spindle for the most accurate measurement. With a predicted retail price of around $90, this wouldn’t be something for solving a one-time spindle question, but it could be a huge time saver for shops and avid tinkerers who likely have to do some trial and error in their current workflow.

What do you think? What questions do you have for Luke and the Soma team? Is this something you (or your shop) would consider buying? What should they call it? Have you ever seen another tool like this? Share your feedback in the Conversation below, and let’s see if our community can help provide some useful guidance in the tool’s development!

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