Why is my crank slipping?
08-20-13, 02:53 PM
#1
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Why is my crank slipping?
I built up my new fixed gear over last couple of months. Just got new wheel set yesterday and I haven't ridden the bike much until today. A couple of times today when pedaling hard (taking off from a stop) I could feel it slip where it felt like the cranks moved and the rear wheel didn't.
I had the chain tension very tight. I adjusted it to give it a little slack and still had the slip. Anything else I should be looking at?
I had the chain tension very tight. I adjusted it to give it a little slack and still had the slip. Anything else I should be looking at?
08-20-13, 03:13 PM
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Bingo^^ common and easily identifiable problem
08-20-13, 03:28 PM
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Ok cool. I just got the wheels and they pre-installed the cog/lock ring for me since I don't have the proper tools. I'll look at that and see if I can tighten it
08-20-13, 09:06 PM
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08-20-13, 10:36 PM
#9
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You can exert far more torque with your hands turning the wheel than you can stomping on a drive train, or cranking a chain whip. If it seems ghetto to you, you are more than welcome to use a chain whip, but its not dumb.
08-21-13, 07:01 AM
#10
Your cog is slipping.
I've never bothered with the rotofix method. It's just not necessary.
People seem to think you need superhuman amounts of torque to properly install a cog when in reality, all you need is to not be an idiot.
People seem to think you need superhuman amounts of torque to properly install a cog when in reality, all you need is to not be an idiot.
Last edited by Scrodzilla; 08-21-13 at 07:16 AM.
08-21-13, 08:06 AM
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Never used the rotofix method. My method is to brace the front wheel against a wall and stand on the forward pedal, using my full weight as leverage to tighten the cog. After tightening the cog, I remove the wheel and install the lockring just tight enough to keep it snug so it won't unscrew on its own. In nearly 40 years I've never had a cog get loose.
08-21-13, 10:39 AM
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rotafix is not dumb, but (imo) it is unnecessary. pretty useful and easy way to get a cog off, tho, if you don't have a chainwhip. i like to use TT's method for tightening cogs, or just ride up the steepest hill i can find and tighten the lockring immediately afterwards.
and yes, grease your threads.
and yes, grease your threads.
08-21-13, 10:42 AM
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I... I uhh.. I just use a chainwhip...?
08-21-13, 10:48 AM
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Well, I ordered a tool off ebay. Until then I'll use more front brake
One thing to note is this was happening more with my previous wheel set which makes me skeptical about the cog/lock ring
One thing to note is this was happening more with my previous wheel set which makes me skeptical about the cog/lock ring
08-21-13, 10:16 PM
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08-22-13, 09:56 AM
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wut?
08-22-13, 10:26 AM
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The chain ring bolts were also a little loose so I tightened those. Never tightened them out of the box but my lbs installed the crank and bb so I figured they would
08-22-13, 10:40 AM
#21
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your cog/lock ring is loose.
I ordered a tb14 wheelset from velomine and asked them to install cog/locking and it was indeed loose. Once i figured out the problem was i just rode around did some mashing and ride to a shop and ask to use a lockring tool.
I ordered a tb14 wheelset from velomine and asked them to install cog/locking and it was indeed loose. Once i figured out the problem was i just rode around did some mashing and ride to a shop and ask to use a lockring tool.
08-22-13, 10:42 AM
#22
Your cog is slipping.
08-22-13, 12:30 PM
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But seriously, I'll wait until I have the proper tool.
08-22-13, 12:39 PM
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How are you going to tighten the lockring if you only bought a chain whip, or tighten the cog if you only bought a lockring tool? It seems like you should have bought at least 2 tools from ebay.
08-22-13, 12:47 PM
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