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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 09-03-08, 08:22 AM   #1
Guvna
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crank advice

When i pedal hard from a slow speed or back pedal very hard my cranks will kind of jump forward or backward a bit, feeling for a second like they've lost their grip. i just want to be sure I'm not stripping any threads or otherwise ****ing my sh*t up.

also, any recommendations for new cranks entirely for a pista?
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Old 09-03-08, 08:25 AM   #2
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sounds like your lockring is not snug against the cog.
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Old 09-03-08, 08:26 AM   #3
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if it only does it when you pedal very hard you probably need to tighten your lockring. People who need to spend money on their bikes to feel good or assert their consumerist identity usually choose sugino 75s.
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Old 09-03-08, 08:29 AM   #4
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if it only does it when you pedal very hard you probably need to tighten your lockring. People who need to spend money on their bikes to feel good or assert their consumerist identity usually choose sugino 75s.
What about those of us who have bulletproof on the street and dura ace on the track?
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Old 09-03-08, 08:37 AM   #5
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also, any recommendations for new cranks entirely for a pista?
As mentioned, your lockring is suspect and your cranks are fine -- are you trying to replace them because you think they're busted?
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Old 09-03-08, 08:39 AM   #6
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What about those of us who have bulletproof on the street and dura ace on the track?
most yall probably didn't ask what cranks to replace perfectly good sugino rds with.
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Old 09-03-08, 08:45 AM   #7
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most yall probably didn't ask what cranks to replace perfectly good sugino rds with.
Well this little black duck knows that spending any money on square-taper cranks is for idiots.
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Old 09-03-08, 09:25 AM   #8
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Thanks for the advice concerning the lockring.

I'm not sure that I need new cranks any time soon, but they've been coming loose pretty frequently (every few weeks) which seems a little weird. Never had that problem with my old Suginos, so I thought I'd just get some general recommendations, see who likes what, why, etc.

What I have now is the pista stock Truvativs.
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Old 09-03-08, 09:31 AM   #9
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Coming loose at the spider bolts for the chainring, or coming loose from the bottom bracket? Either way, it's worth trying to figure that out and fix it since most "upgrades" won't really offer a noticeable advantage over what you've got.
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Old 09-03-08, 11:48 AM   #10
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Coming loose at the spider bolts for the chainring, or coming loose from the bottom bracket? Either way, it's worth trying to figure that out and fix it since most "upgrades" won't really offer a noticeable advantage over what you've got.
It's coming loose at the bottom bracket. I just tightened it again a few weeks ago, if I'm still having problems i guess I'll take it in somewhere...
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Old 09-03-08, 12:06 PM   #11
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Check into it promptly. If you're riding on a wobbly connection with the bb, you could round out the hole in the crank arm and ruin it.
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Old 09-03-08, 02:10 PM   #12
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Take out the crank bolts, clean em up good and take a q tip and try to clean the threads inside the bottombracket. Then a little blue locktite and you should be OK. Blue still allows you to remove the bolts if need be. You get red and you're pretty well screwed.

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Old 09-03-08, 02:26 PM   #13
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great advice, thanks a lot all. I declare dead thread.
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Old 09-03-08, 02:31 PM   #14
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What about those of us who have bulletproof on the street and dura ace on the track?
Time to buy Campy.
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Old 09-03-08, 03:01 PM   #15
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Time to buy Campy.
F that pasta crap!
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Old 09-03-08, 03:06 PM   #16
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F that pasta crap!


Pista pasta. Radial 4 life.
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Old 09-03-08, 03:09 PM   #17
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if it only does it when you pedal very hard you probably need to tighten your lockring. People who need to spend money on their bikes to feel good or assert their consumerist identity usually choose sugino 75s.
I lost my consumerist identity a while ago. But my self that needs stiff cranks that look damn good demands Sugino 75s. They are the standard for track cranks (well, these and Dura Ace).

Truvativ Omniums also look good on the Bianchis. And they are reputed to be very stiff as well.
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Old 09-03-08, 03:11 PM   #18
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Pista pasta. Radial 4 life.
Too bad they weren't 5 spoke and you could make Aerospoke dinner.
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Old 09-03-08, 03:22 PM   #19
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Too bad they weren't 5 spoke and you could make Aerospoke dinner.
They had a 5 spoke batch, but it all got shipped to Brooklyn where it's going for $400/lb. If you're lucky enough to find it.
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Old 09-03-08, 07:46 PM   #20
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Gotta love asking mechanics question in the clueless SSFG forum with 19 irrelevant answers. You might as well give Milbach formula hubs with upgraded bearings and tell him they are equivalent to phils.
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Old 09-04-08, 12:35 AM   #21
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Grudge much? Dude's lockring needs tightening and he needs to check up on his cranks. He even felt like he got his answer. Or was the comment about "irrelevant answers" intentionally hypocritical?
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Old 09-04-08, 07:43 AM   #22
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I lost my consumerist identity a while ago. But my self that needs stiff cranks that look damn good demands Sugino 75s.
So are you riding a dolan or the new BT blade? How do you like those dmt mags?


Oh yeah crank stiffness is, with rare exceptions, just an excuse to buy **** you don't need cause everyone else it.
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Old 09-04-08, 10:28 AM   #23
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Oh yeah crank stiffness is, with rare exceptions, just an excuse to buy **** you don't need cause everyone else [has] it.
Corrected your post (I think).

But not all excuses to do something that one does not 'need' are empty. Who really 'needs' anything when it comes to bikes? It seems that you are looking for too strong a reason to upgrade your bike. Just make it the way you like it and enjoy it.

You wouldn't happen to be a speech writer for the McCain campaign, would you?
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Old 09-04-08, 10:41 AM   #24
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Corrected your post (I think).

But not all excuses to do something that one does not 'need' are empty. Who really 'needs' anything when it comes to bikes? It seems that you are looking for too strong a reason to upgrade your bike. Just make it the way you like it and enjoy it.

You wouldn't happen to be a speech writer for the McCain campaign, would you?
Ok let's replace need with have any noticeable benefit beyond making you bike look good/more like every other hipsters.

Stiffness in cranks is one of those things that sounds like a reasonable justification but is complete bull**** for almost every bike people use it for. It is a completely empty excuse as you put it unless you're on an incredibly stiff frame(concepts et al aren't stiff enough) with incredibly stiff wheels and shoes. So until you're on a bt with io/cometes and dmt mags or something stfu or just admit your chasing fads.
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Old 09-04-08, 10:55 AM   #25
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You might as well give Milbach formula hubs with upgraded bearings and tell him they are equivalent to phils.
zing.
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