Workshop tales, trials and disasters. Maintenance tips, techniques and myths. Technical discussion, description and outright lies
by schroeds » Tue Oct 30, 2012 9:09 pm
Had a rather unfortunate meeting with a traffic calming device the other day...which put me in hospital Nothing broken, but lots of lost skin (including flattened out nose and chin) and suspect shoulder that the physio will have to deal with. Anyway, among the carnage is a pretty severely bent chainring tooth. Has anybody any tips/experience with bending them back? Though I may as well give it a whirl before forking out for a new one which I can't afford. PS kudos to Zipps, my old 404 hit this stupid concrete thing at about 30 km, plenty enough to piledrive me into the asphalt, but the wheel appears not to have been damaged at all 
I'm not so much a cyclist..more of a sit down comedian
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by Forum Ads » Tue Oct 30, 2012 9:24 pm
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by Mulger bill » Tue Oct 30, 2012 9:24 pm
Start with prayer to your deity or prophet of choice... A shifting spanner makes a handy tool but hasten slowly, you won't get many chances to get it straight.
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic. London Boy 29/12/2011
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by schroeds » Wed Oct 31, 2012 12:10 am
ok so it's a highly technical process then 
I'm not so much a cyclist..more of a sit down comedian
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by Baalzamon » Wed Oct 31, 2012 12:34 am
Hasten too fast and thy teeth will break
Masi Speciale CX 2008 - Brooks B17 special saddle, Garmin Edge 810 
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by bychosis » Wed Oct 31, 2012 7:02 am
And there is no harm in trying to unbend most things that are broken. Worst that can happen is that you can't straighten it and needed a new one anyway.
bychosis ( bahy-koh-sis): A mental disorder characterised by symptoms, such as delusions or hallucinations, that indicate impaired contact with reality not containing bicycles.
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by schroeds » Wed Oct 31, 2012 8:45 am
well ok then, pep talks over, here I go 
I'm not so much a cyclist..more of a sit down comedian
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by eeksll » Wed Oct 31, 2012 11:25 am
if its only one or a couple and my mtb is anything to go by, you should be riding fine without that tooth anyways.
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by rustychisel » Wed Oct 31, 2012 11:32 am
main thing is that you're not broken. I was lead into a nest of those things by another rider at 45kmh a few years ago. Front wheel Ksyrium was undamaged but I got off the ground with a broken collar bone.
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by jacks1071 » Wed Oct 31, 2012 11:33 am
schroeds wrote:Had a rather unfortunate meeting with a traffic calming device the other day...which put me in hospital Nothing broken, but lots of lost skin (including flattened out nose and chin) and suspect shoulder that the physio will have to deal with. Anyway, among the carnage is a pretty severely bent chainring tooth. Has anybody any tips/experience with bending them back? Though I may as well give it a whirl before forking out for a new one which I can't afford. PS kudos to Zipps, my old 404 hit this stupid concrete thing at about 30 km, plenty enough to piledrive me into the asphalt, but the wheel appears not to have been damaged at all 
I straightened one out on the kids bikes a week ago. I zip tied a screw driver to the frame as a rough gauge and worked it with a shifter - it took about an hour but I got it surprisingly quite straight. If you do the same you might need some small files to tidy up some of the mashed teeth but you might be able to salvage it. If you have a crack at it you'll soon know if a new ring is required..
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by schroeds » Wed Oct 31, 2012 11:59 am
lump_a_charcoal wrote:Well? 
Still trying to open the tool box. 
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by schroeds » Sat Nov 03, 2012 4:10 pm
Good news, I've managed to straighten the teeth..actually it was really easy, basic plier work 101 Thanks for the encouragement guys  Now I just have to heal and get back on the bike.
I'm not so much a cyclist..more of a sit down comedian
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