reducing 15mm thru axle fork to 12mm

Discuss light weight issues concerning mountain bikes & parts.

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joejack951
Posts: 386
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

intheknowcycling wrote:
Fri Apr 27, 2018 3:27 pm
joejack951, How's it coming along? Any updates you can share? Thanks, Steve
Nothing much to share unfortunately. Been wrapped up in a bunch of other things lately. If I can get some time to make progress on another project I plan to do a combined initial small run of adapters to prove the concept. Maybe in the next couple of weeks?

by Weenie


mwiercinski
Posts: 1
Joined: Thu May 10, 2018 3:42 pm

by mwiercinski

Hey joejack951!

I just came across this thread and really, what you are designing would be a life saver for my Domane build*. Any chance you had some progress on the initial production run? Please sign me up! :)

*) I can always build another wheel, but buying hub mismatching the frame was a big FAIL in the first place :D

joejack951
Posts: 386
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

mwiercinski wrote:
Thu May 10, 2018 3:45 pm
Hey joejack951!

I just came across this thread and really, what you are designing would be a life saver for my Domane build*. Any chance you had some progress on the initial production run? Please sign me up! :)

*) I can always build another wheel, but buying hub mismatching the frame was a big FAIL in the first place :D
Can you give me any details on the dropouts of your fork, thickness of each side and also length of threaded and unthreaded region, the latter being highly important to making this conversion work? I am hoping road forks are a little more standardized than MTB. Which thru axle are you currently using? Do you have any details on it?

Nostra
Posts: 1
Joined: Thu Jun 14, 2018 2:56 pm

by Nostra

Hi Joe,

I need this as well for my Santa Cruz, Stigmata - the fork is 15mm and I want to switch between 12mm axle wheel/hub and regular 15mm.

Your solution is spot on! Are these into production? send me PM, let me know the cost, maybe we can split cost for the first initial batch the get it rolling? or if you have drawings already for machining I can try to get them done in DK and ship your way.

joejack951
Posts: 386
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

Nostra wrote:
Thu Jun 14, 2018 3:00 pm
Hi Joe,

I need this as well for my Santa Cruz, Stigmata - the fork is 15mm and I want to switch between 12mm axle wheel/hub and regular 15mm.

Your solution is spot on! Are these into production? send me PM, let me know the cost, maybe we can split cost for the first initial batch the get it rolling? or if you have drawings already for machining I can try to get them done in DK and ship your way.
Hey, nothing in production yet as I can't seem to get good feedback from anyone on their fork's geometry. In order to design something that will work properly, I need to know exactly what's going on with the threaded fork leg. I am beginning to think that there are simply too many variables to make this a viable project unless I can design some sort of one-size-fits-all adapter, but I may be dreaming about making that work.

But perhaps you can at least shed some light on your specific fork. How thick are the dropouts? How much of the threaded dropout is actually threaded? What is the inner diameter of the unthreaded portion? Pics would be great, too.

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