raleigh GS Comp steerer tube help
04-25-14, 05:36 PM
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raleigh GS Comp steerer tube help
Guys,
Doing a resto on a 1978 GS and ran into this issue. I noticed the when I turned the handlebars there was binding towards one side. I thought I would just repack and tighten the headset. When I inspected I found the bulge. I'm guessing someone over tightened the quill stem in just the wrong spot and there is a bulge and split in the tube. Forks are fine but I'm guessing I need a new tube.
My questions:
1 the old tube needs to be pressed out?
2 Where do I find a new tube?
3 LBS or a machine shop to do this job?
Thank you,
Joe
Doing a resto on a 1978 GS and ran into this issue. I noticed the when I turned the handlebars there was binding towards one side. I thought I would just repack and tighten the headset. When I inspected I found the bulge. I'm guessing someone over tightened the quill stem in just the wrong spot and there is a bulge and split in the tube. Forks are fine but I'm guessing I need a new tube.
My questions:
1 the old tube needs to be pressed out?
2 Where do I find a new tube?
3 LBS or a machine shop to do this job?
Thank you,
Joe
Last edited by fujione; 04-25-14 at 05:49 PM.
04-25-14, 08:25 PM
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hello fujione,
if your goal is to get the hs turning properly you could likely accomplish this by putting the steerer back round with rolling blocks. iirc Bicycle Research or other makers offered these blocks. it is not worth buying them for a single use but if you have access to a lbs they may be part of the tool arsenal there.
if steerer out of line it can be brought back with a mandrel; another item lbs is likely to possess.
the crack in the steerer is not a big safety issue since it is longitudinal. there is simply no place for anything to go to in the assembly. once you have everything in alignment you could have a framebuilder braze closed the crack.
this route would be less costly and less trouble than a steerer replacement.
if your goal is to get the hs turning properly you could likely accomplish this by putting the steerer back round with rolling blocks. iirc Bicycle Research or other makers offered these blocks. it is not worth buying them for a single use but if you have access to a lbs they may be part of the tool arsenal there.
if steerer out of line it can be brought back with a mandrel; another item lbs is likely to possess.
the crack in the steerer is not a big safety issue since it is longitudinal. there is simply no place for anything to go to in the assembly. once you have everything in alignment you could have a framebuilder braze closed the crack.
this route would be less costly and less trouble than a steerer replacement.
04-25-14, 08:31 PM
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Thank you, I just found 2 local frame builders and emailed them. When I go there I'll ask about just taking the bulge out and brazing the crack. This is the wonderful thing about steel.
Joe
Joe
04-26-14, 09:29 AM
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There have been a few similar "saves" done by cutting/welding the steer tube (steerer) so as to replace only the upper half of the steer tube.
Frank the Welder and Bernie Mikkelsen have both saved forks with steer tube damage without having to torch the paint off of the fork crown.
Certainly not all frame builders will choose this method, so you might have to send it out.
Frank the Welder and Bernie Mikkelsen have both saved forks with steer tube damage without having to torch the paint off of the fork crown.
Certainly not all frame builders will choose this method, so you might have to send it out.
