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Frozen shifter

Old 05-20-16, 11:57 AM
  #1  
Ponyblues
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Frozen simplex shifter screw damaged fork threads

Soaked this one in atf. The lever moves fine but I need to get the screw out... It's 50s simplex lever. Suggestions? Also have damaged the French threads of my fork and have heard that it would be possible to repair them with brass. Do you know a guy? Thanks all!
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Old 05-20-16, 12:43 PM
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I'd be patient with the screw, keeping at it with an ATF/acetone blend or penetrating oil for a number of days. If you resort to heat or destructive removal, the job potentially becomes a much bigger pain in the @&%.

And yes, it's possible to use brass to repair steerer threads. You'll need to find a framebuilder or someone proficient at brazing to lay down some brass where you're missing threads. You can find plenty of those guys in this site's framebuilders' forum, or we might be able to suggest a local shop if you let us know where you're at. That might be the easy part. Then you'll need to find a shop with a French threaded die (25 mm x 1 mm) to cut threads into the brass.

<EDIT> I found a source for a 25x1 die. $33.80 from the site below:
http://www.victornet.com/tools/Metric-Dies/133.html
(I'm confident you can find others online, too.)


As an alternative... Since French headset cups are the same diameter as most other 1" headsets (30.2 mm), you can replace the headset to accept a more common British/ISO threaded fork.

Last edited by SkyDog75; 05-20-16 at 12:53 PM.
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Old 05-20-16, 12:44 PM
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You'll probably have more useful responses on the Classic & Vintage section: Classic & Vintage
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Old 05-20-16, 12:46 PM
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Originally Posted by nfmisso View Post
You'll probably have more useful responses on the Classic & Vintage section: Classic & Vintage
I didn't think my response was that unhelpful! ;-)
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Old 05-20-16, 12:53 PM
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I read the title as "frozen s***ter" and I was thinking, "In May?!"
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Old 06-15-16, 10:46 AM
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Thanks for the responses people! Ended up having to drill and retap when the left handed drill bit failed, tons of corrosion. If someone could refer me to a shop that could help with the fork I would much appreciate it. I'm in the bay area: San Jose. Really appreciate it!
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