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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 09-14-09, 12:20 PM   #1
jasandalb
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Need Help trying to figure out how to remove these

So... I found this frame in a dumpster and am going to rebuild it to a single speed.
But, I need to remove the cranks and bottom bracket.
Anyone know how to remove these?

The bike is a cannondale r700? these are dura ace cranks.
both side are like this...and i think its a square taper bb.
where do i start?

thanks!!

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Old 09-14-09, 12:26 PM   #2
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start by removing the dust cap, you need something to fit into those two holes ( a pin spanner is the right word). I bent a fork (eating, not bicycle), but I'm sure there is a right tool for the job.

Once the dust cap is out, you need to buy a crank puller, nothing else will do.

screw the part of the crank puller that looks like a nut firmly into the threads in the crank, then screw the arm/lever/bolt part of the crank puller into the nut. with a few good twists it should pop right off.

repeat on other side.

Now where do you like that somebody throws a frame like that into a dumpster?
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Old 09-14-09, 12:35 PM   #3
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As long as the dustcaps aren't on there too good, needlenose pliers sometimes work to get them off without too much mangling.

Don't forget to remove the crank bolt/nut after the dustcap bit and before the crankpuller bit...
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Old 09-14-09, 01:04 PM   #4
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i live in oldpeoplesville florida.. (aka tampa bay area)
Those dust caps are on there pretty good....
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Old 09-14-09, 01:20 PM   #5
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If you want to keep the dustcaps, get one of these http://www.treefortbikes.com/283_333...-Nut-Tool.html
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Old 09-14-09, 01:27 PM   #6
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I probably wont. I am going to getting rid of this crankset and am going to find a single ring.
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Old 09-14-09, 01:32 PM   #7
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I probably wont. I am going to getting rid of this crankset and am going to find a single ring.
If you are looking for someone to give the cranks and bottom bracket (and any other parts you don't want ) to, I think I can help you out.

CMC
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Old 09-14-09, 01:38 PM   #8
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If you are looking for someone to give the cranks and bottom bracket (and any other parts you don't want ) to, I think I can help you out.

CMC
I am actually trying to trade to get going on a single speed.
I need a 16 tooth freewheel with spacer kit, chain tensioner and single ring crankset.
If you know anyone....
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Old 09-14-09, 01:43 PM   #9
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Why not just use those cranks for your SS project? They look like they would work just fine and you could easily save yourself some coin by reusing them and spend the money on a nicer set of wheels.
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Old 09-14-09, 01:44 PM   #10
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Just take off the big ring, unless you must have a track specific crankset. No need to remove the cranks, or the pedals for that matter. You will need to buy some shorter bmx/track bolts if you go that route.
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Old 09-14-09, 01:54 PM   #11
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Just take off the big ring, unless you must have a track specific crankset. No need to remove the cranks, or the pedals for that matter. You will need to buy some shorter bmx/track bolts if you go that route.
bmx/track bolts?? HUH??

I have to take it all off because it is going to be powder coated tomorrow.
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Old 09-14-09, 01:57 PM   #12
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http://www.benscycle.net/index.php?m...757e6d3dc45f0a
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Old 09-14-09, 02:20 PM   #13
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If you found THAT frame in a dumpster, you have carefully examined it for cracks before going to the expense of powder coating?
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Old 09-14-09, 02:55 PM   #14
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Sounds like you do not belive him. I found a 1986 Miata ninetwelve, almost mint in a dumpster. Watched the guy throwing it in. Almost did not hit the bottom before I had pulled it out of there again. All Shimano 6oo.
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Old 09-14-09, 02:58 PM   #15
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And do not let them sand or blast on the frame much. Cannondales are VERY thin wall tubing.
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Old 09-14-09, 03:17 PM   #16
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If you found THAT frame in a dumpster, you have carefully examined it for cracks before going to the expense of powder coating?
Already had it checked over. its fine. plus the powder coating is $45 so even if I didnt have my guy check it I wasnt that worried.

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Sounds like you do not belive him. I found a 1986 Miata ninetwelve, almost mint in a dumpster. Watched the guy throwing it in. Almost did not hit the bottom before I had pulled it out of there again. All Shimano 6oo.
your 100% right! I pulled up to unload some tree limbs and crap from my lawn and watched the guy throw it in the dumpster along with some old rusty wheels and stuff.... she was calling me!
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Old 09-14-09, 04:03 PM   #17
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Already had it checked over. its fine. plus the powder coating is $45 so even if I didnt have my guy check it I wasnt that worried.



your 100% right! I pulled up to unload some tree limbs and crap from my lawn and watched the guy throw it in the dumpster along with some old rusty wheels and stuff.... she was calling me!
No, not that I didn't believe him, just didn't believe his luck.

P.S. OP, I hate you. ( just jealous )
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Old 09-14-09, 05:14 PM   #18
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no sweat cold feet. stopped by a friends shop and had him pull the bb and cranks. he told me that I will need to replace the fork.
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