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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 11-12-10, 04:40 PM   #1
evbophoto
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Help removing old crank

So I've got this old Free Spirit I'm converting over to a fixie (I know I know, free spirits suck,) and I need to get the crank off but for the life of me I can't figure out how. Any help would be appreciated.

thanks

evan.
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Old 11-12-10, 04:52 PM   #2
reptilezs
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the nut and cone unscrews clockwise. use a pin spanner on the cone. generally the nut is 32mm. remove the pedals before you work, especially the left one
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Old 11-12-10, 04:53 PM   #3
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That's an Ashtabula crank, or a knock off of one. They were SOP on American bikes for decades, then relegated to juvinile and BMX bikes only. yor remove them by removing the large lock nut cone on the left side of the crank/bottom bracket, then snaking it out to the right. Be sure to remove the pedals first, otherwise you'll be up the creek.

You can save yourself some dough by looking for an SS or BMX chainring to fit the crank (they're very common) and keeping it in service. The BB is very simple to service and durable.
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Old 11-12-10, 05:16 PM   #4
evbophoto
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thanks guys, figured it out just a minute ago. it needed to be cleaned anyway, the bearings look like hell and it's all kinds of nasty in there. I've got a brand new spare chain just needs to sized I reckon.
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