Increasing flats on gear hub axle?
04-24-21, 03:41 PM
#1
Senior Member
Thread Starter
Increasing flats on gear hub axle?
Hello,
I need to further the flats on a gear hub. I tried with a manual file, but got nowhere because the steel is too strong.
Before I try and find a professional to do it for me, I was wondering what tool is used for that task.
Thank you.
I need to further the flats on a gear hub. I tried with a manual file, but got nowhere because the steel is too strong.
Before I try and find a professional to do it for me, I was wondering what tool is used for that task.
Thank you.
04-24-21, 04:04 PM
#2
Really Old Senior Member
Grinder.
Good motor skills/vision.
A thread file would be handy to dress off the burrs.
Good motor skills/vision.
A thread file would be handy to dress off the burrs.
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04-24-21, 06:25 PM
#3
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Originally Posted by Winfried
I need to further the flats on a gear hub.
FWIW, I have four Shimano Nexus and Alfine hubs and have never had to modify the axles.
EDIT: I may have misunderstood... you want to extend the flats so you can remove the brake module? I guess that makes sense!
04-24-21, 07:58 PM
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I would have a machine shop do it, there is a lot of downside to getting it wrong. And I am pretty good with a file and grinding wheel, but your axle really should be correctly fixtured and set up to get it right.
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04-25-21, 07:24 AM
#5
Senior Member
Thread Starter
Thanks much for the infos.
It's to save the 7,3mm used by the useless left lock nut before having a professional cold set a fork to fit the hub in that non-standard fork.
Thought so. I'll hit the yellow pages.
Originally Posted by sweeks
I may have misunderstood... you want to extend the flats so you can remove the brake module? I guess that makes sense!
Originally Posted by dsbrantjr
I would have a machine shop do it, there is a lot of downside to getting it wrong. And I am pretty good with a file and grinding wheel, but your axle really should be correctly fixtured and set up to get it right.
04-25-21, 12:16 PM
#6
Senior Member
You can use the coarse side of a whet stone to grind the hardened steel. You need to take i slow and check the result often.
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