Chain keeps coming off crank gear at high gears
#1
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Chain keeps coming off crank gear at high gears
If I pedal too hard it comes off. And always on the outside.
#2
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BB flexing?
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#3
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It doesn't stay in low gears either. It'll immediately slip from 1st to 3rd and then wander up to 5th. It will stay in 6th and 7th but now I can't use them because if I pedal hard the chain slips.
#5
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I removed the chain guard and disconnected gear cable. When I rotate the pedal backwards the lower pully wheel clicks and it stays in 6th gear (2nd smallest cog). I have to push the derailleur in towards the wheel to make the chain rotate smooth
#6
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When I pull the derailleur away from the wheel to get the chain onto the highest gear it slips off the front chain ring like this.
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might address the flat tire too.
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I wouldn't at all be surprised it the rear derailleur and/or hanger are bent as well.
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I'm betting on the BB being shot as well as the chain. You shouldn't have 'play' in the crank.
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Fortunately one-piece cranks are quite serviceable with minimal tools. The Park Tool website has good instructions. Best bet is to open it up and make sure the pieces are in good condition, and if they are, reassemble with proper lube and adjustment. Since the chain is shot anyway, it has to be replaced, and then you can re-evaluate from there.
#17
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I'm gonna take my other bike to go see a guy selling a chain and then the bike shop to see chain tools.
I pulied this carrier off one of my dumpster bikes are the mounting brackets too close to the brake? I don't have a backpack need a milk crate to bring my tools and stuff.
I pulied this carrier off one of my dumpster bikes are the mounting brackets too close to the brake? I don't have a backpack need a milk crate to bring my tools and stuff.
Last edited by homeless in ca.; 04-07-21 at 10:46 AM.
#18
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Will connex 8sx 6/7/8 work for me?
My bike is 7 speed and someone has a chain for sale unopened 40 can$
My bike is 7 speed and someone has a chain for sale unopened 40 can$
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You can get a new chain for under 20.00.
Sram comes to mind.
Good Luck and stay safe
Sram comes to mind.
Good Luck and stay safe
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#20
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In this pic, the chain link that's about to make contact with the chainring isn't fully seated. If you have a chain breaker tool, you may be able to reseat the link so it's fully together, or alternately, remove the bad link and relink it together one link shorter if the chain's long enough. I would not advise this if you have the means to replace the chain, but if cash is short, this can be a decent temporary fix.
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#23
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In this pic, the chain link that's about to make contact with the chainring isn't fully seated. If you have a chain breaker tool, you may be able to reseat the link so it's fully together, or alternately, remove the bad link and relink it together one link shorter if the chain's long enough. I would not advise this if you have the means to replace the chain, but if cash is short, this can be a decent temporary fix.
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The rivets that you have to break off are largely obsolete. Most chains now come with a detachable master link. In fact, replacing that broken link with a master link of the correct width would probably get you back on the road once the other issues are corrected as well. If you do try to press the chain back together, you'll probably want to carry a master link and the chain tool with you, or invest in some good walking shoes.
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#25
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So I screwed up and pushed the rivet out completely when removing a piece of chain and was unable to reassemble it.
After watching a bike man video I removed another section of chain but this time I left the rivet on there enough that I was able to push it back in. I just tested the bike and it does ride much better and stays in the lower gear it no longer slips into higher gears and chain doesn't fly off even when I pedal really hard.
I took some pictures to show how the bike chain sits in high and low gear.
After watching a bike man video I removed another section of chain but this time I left the rivet on there enough that I was able to push it back in. I just tested the bike and it does ride much better and stays in the lower gear it no longer slips into higher gears and chain doesn't fly off even when I pedal really hard.
I took some pictures to show how the bike chain sits in high and low gear.
Last edited by homeless in ca.; 04-08-21 at 10:33 AM.