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-   -   Crashed like an idiot, need some help assessing the damage. (https://www.bikeforums.net/bicycle-mechanics/932718-crashed-like-idiot-need-some-help-assessing-damage.html)

hicksrdalton 02-03-14 07:25 PM

Crashed like an idiot, need some help assessing the damage.
 
So I crashed today going downhill at about 22mph. Hit some wind that caused the bike to swerve towards the edge of the road where the asphalt drops off into a curb. Pretty much went into the curb and wheel caught the edge of the asphalt and sent me flying on to my right side. Some road rash and what not but the bike took some damage.
Right now it looks like
  • a scratched up right 105 shifter
  • A scratched saddle
  • broken barrel adjuster

So did I come out all right?
Half of the adjuster is still in the derailleur so how should get all that out?
And finally is it alright that some of the first threads in the adjuster's hole are a bit stripped?

Bill Kapaun 02-03-14 07:48 PM

Looks fine from here!

Andrew R Stewart 02-03-14 07:48 PM

If that's all that got hurt (including you) i say you did OK. The saddle and shifter are now war scars, think of them "fondly" in the future. The der's cable adjuster can likely be replaced.

Remove the cable, whip out your Swiss Army Knife awl and wedge/tap it into the remaining adjuster's piece. Unscrew and see if the remaining bit comes out smoothly. If it does then you're good. If not then I would advance to a screw extractor, which might need a small amount of drilling to better size up the through hole. As long as the remains unscrews that i wouldn't be too concerned about the slight buggering of the thread, that it unscrewed says the thread isn't a problem. If you can get it out but not rethread a replacement then a simple chasing of the threads can be done easily. IIRC there is a pressed in ring of hardened steel in the adjuster's threaded hole where the cable exits it and runs to the anchor bolt. this ring is to reduce the wear/sawing action the cable would otherwise have on the AL body. this ring is able to be pushed out by the tap and then repressed in after.

You could always use an inline adjuster if the original one is not repairable. Andy.

HillRider 02-03-14 08:24 PM

If you hit the rear derailleur hard enough to break the barrel adjuster, I'd have the frame's derailleur hanger alignment checked even if there is no other obvious damage. It doesn't take much of a tweak to make it throw off your shifting.

FBinNY 02-03-14 08:38 PM


Originally Posted by HillRider (Post 16465707)
If you hit the rear derailleur hard enough to break the barrel adjuster, I'd have the frame's derailleur hanger alignment checked even if there is no other obvious damage. It doesn't take much of a tweak to make it throw off your shifting.

This is always good practice after a crash on the right side. An easy and reliable way to confirm that the hanger hasn't been bent is to have a friend hold the rear wheel and shift to low by pulling the cable away from the down tube like a bow string. If the RD doesn't overshift past the cassette the hanger didn't move. If it does, then hanger got bent in. In your case, with a broken barrel adjuster, do the same test pushing the lower body in with hand pressure.

BTW- this woks backward also. If you ever find yourself having to adjust the RD trim outward (as if the cable shrank) the hanger in bent inward since the last adjustment.

Remember, all this assumes the limits and trim were correctly adjusted all along -- another good reason to keep the bike in top working condition.

hicksrdalton 02-03-14 10:53 PM


Originally Posted by Andrew R Stewart (Post 16465592)
If that's all that got hurt (including you) i say you did OK. The saddle and shifter are now war scars, think of them "fondly" in the future. The der's cable adjuster can likely be replaced.

Remove the cable, whip out your Swiss Army Knife awl and wedge/tap it into the remaining adjuster's piece. Unscrew and see if the remaining bit comes out smoothly. If it does then you're good. If not then I would advance to a screw extractor, which might need a small amount of drilling to better size up the through hole. As long as the remains unscrews that i wouldn't be too concerned about the slight buggering of the thread, that it unscrewed says the thread isn't a problem. If you can get it out but not rethread a replacement then a simple chasing of the threads can be done easily. IIRC there is a pressed in ring of hardened steel in the adjuster's threaded hole where the cable exits it and runs to the anchor bolt. this ring is to reduce the wear/sawing action the cable would otherwise have on the AL body. this ring is able to be pushed out by the tap and then repressed in after.

You could always use an inline adjuster if the original one is not repairable. Andy.


Originally Posted by HillRider (Post 16465707)
If you hit the rear derailleur hard enough to break the barrel adjuster, I'd have the frame's derailleur hanger alignment checked even if there is no other obvious damage. It doesn't take much of a tweak to make it throw off your shifting.

Thanks to all of you. I just noticed that the barrel adjuster actually isn't broken its just not in the derailleur and I can't get it to thread so I think the first few threads that are buggered are stopping it. I'll take it to the LBS and see what they can do to help me. Other than that the hanger is definitely messed up (it was originally touching the cage of the derailleur to the spokes). Everything else is fine and you have all made me feel a little bit better about my accident.

Now its time to nurse the bit of road rash I have and take the bike in.

Andrew R Stewart 02-03-14 10:58 PM

Crashes often have secondary damage that takes a second/third/experienced look to see. It sounds like the cable adjuster was already unthreaded before the crash. if so then the pressure from the cable (during shifting/pulling on that cable) may have mashed the first thread. Usually this is easy to chase clean. That the cage was, also prior to the incident, touching the spokes suggests that the hanger, too, was a problem before.

I think your taking the bike to the trusted/skilled LBS is the best approach. Andy.

hicksrdalton 02-04-14 02:40 AM


Originally Posted by Andrew R Stewart (Post 16466016)
Crashes often have secondary damage that takes a second/third/experienced look to see. It sounds like the cable adjuster was already unthreaded before the crash. if so then the pressure from the cable (during shifting/pulling on that cable) may have mashed the first thread. Usually this is easy to chase clean. That the cage was, also prior to the incident, touching the spokes suggests that the hanger, too, was a problem before.

I think your taking the bike to the trusted/skilled LBS is the best approach. Andy.

Yes, my precious is going in to see the local bike mechanic tomorrow to see what we can do.

The derailleur wasn't touching the spokes till after the incident I mean, I had it checked up all of 4 days before the incident.

On the other hand I've just now realized that my jersey no longer exists in our spatial plane(its in bits) and I have more road rash than previously thought. Time to buy some new clothes even though I JUST BOUGHT THESE 2 MONTHS AGO. The struggle is real my friends.

Kimmo 02-04-14 04:53 AM


Originally Posted by hicksrdalton (Post 16466008)
Thanks to all of you. I just noticed that the barrel adjuster actually isn't broken its just not in the derailleur and I can't get it to thread so I think the first few threads that are buggered are stopping it. I'll take it to the LBS and see what they can do to help me.

They'll either tap it or lacking a tap, they'll just run a screw with the same thread through from the other side (if possible).

HillRider 02-04-14 08:28 AM


Originally Posted by hicksrdalton (Post 16466161)
On the other hand I've just now realized that my jersey no longer exists in our spatial plane(its in bits) and I have more road rash than previously thought. Time to buy some new clothes even though I JUST BOUGHT THESE 2 MONTHS AGO. The struggle is real my friends.

My condolences. I had a crash last summer that also wiped out a new U of F jersey that my son had gotten me as a birthday present. It was only the second time I had worn it and the crash plus the medics shredded it completely.

loimpact 02-04-14 03:59 PM

Condolences.....

I just recently dropped the last 2 scabs off the front of my left knee and my ribs have juuuuuust started to feel back to normal again after my crash approximately a month ago. Still not 100% but sucks. Fortunately, I only had on an old T shirt which was quite disposable.

A buddy of mine just went down this last weekend on his.....***SPECIALIZED S-WORKS**** full-carbon road bike. YIKES!! Fortunately, he was ok and the bike frame is ok. He had to have some RD, chain, cassette & rim work done, but only about $300 worth. Toast that frame & he'd have been crying tears for sure!!

:cry: :p


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