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why do our ashtabula bb's keep loosening

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why do our ashtabula bb's keep loosening

Old 07-16-09, 01:34 PM
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une_vitesse
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why do our ashtabula bb's keep loosening

lately our shop has had a rash of recently adjusted ashtabula bottom bracket assemblies coming back loose. the only way we were able to keep those poor folks away is to treat the adjustable side's threads with locktite and overtighten the lockring...
any thoughts, experiences?
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Old 07-16-09, 02:21 PM
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Might be a bad locknut. They tend to be softer than the crank arms so they are the sacrificial part. Having some of the WALD Ashtabula Sets to replace the whole thing can help also. I just put one into a 1962 Rollfast that I am rebuilding and the new stuff is SOOOOO Smooth!
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Old 07-16-09, 03:14 PM
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Good to know. I just ordered one as a kit. Now I need to track down a press for the cups...Any suggestions for my tool-collection?

UPDATED: Solved my query and picked one of these up -

http://www.parktool.com/products/det...=51&item=HHP-2

Last edited by Panthers007; 07-16-09 at 04:34 PM.
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Old 07-16-09, 03:55 PM
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my guess would be locknuts as well. see if you can order a batch for the shop if you're having this problem a lot.

our problem has been cheap stock headsets...they come over tight, so when you adjust them correctly, they've already been wickedly tight, and fall out of adjustment.
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Old 07-16-09, 08:17 PM
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Originally Posted by Panthers007 View Post
Good to know. I just ordered one as a kit. Now I need to track down a press for the cups...Any suggestions for my tool-collection?

UPDATED: Solved my query and picked one of these up -

http://www.parktool.com/products/det...=51&item=HHP-2
Got a Park headset press? That's what I use without the guides. Works fine.
Edit: Should have read the rest of your post.
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Old 07-16-09, 09:34 PM
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They are said to work well with installing Ashtabula-type fixed-cups. We shall see shortly...
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Old 07-16-09, 10:08 PM
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The only reason they come loose is because your mechanics don't know how to tighten things to the proper torque.
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Old 07-17-09, 04:02 AM
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Originally Posted by Panthers007 View Post
They are said to work well with installing Ashtabula-type fixed-cups. We shall see shortly...
It will work just fine! We used to use a bench vice with brass jaws to do this years ago. The Headset press I think works better and faster without the possibility of scratching or nicking the paint on the bike frame. Just used my headset press to install my new BB in my restored Cruiser frame .
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Old 07-17-09, 02:25 PM
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I also have a Cyclus headset-press. Very high-quality, but I have no idea if it would work for this without a few additions. But for headsets - the Cyclus is around $80 and works great. Brass jaws on a vice? Sounds like those would be primarily used by jewelers. Cool.
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