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Old 02-27-08, 12:54 PM   #1
mcnuggets
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I need a new crankarm

I got into an accident a while ago and I need to replace the left crank arm on my Truvativ 5D crankset. Now I've looked and it seems the only crankarms available are square tapered. Like this:

http://www.jensonusa.com/store/produ...rank+Arms.aspx

What I have definitely does not seem to be square tapered at all. What do I do here? Am I just **** out of luck?
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Old 02-27-08, 12:56 PM   #2
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You should be able to find a replacement. I see single arms out there all the time. It will just be a lot of research to find one.
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Old 02-27-08, 01:00 PM   #3
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Am I missing something here? I mean I have the crank arm here on the bike in front of me and it definitely does not seem to have a square taper. Does Truvativ produce one off sort of cranks for certain bike manufacturers (my bike is a store bough 06 Specialized Rockhopper Comp)? Seems a bit silly.
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Old 02-27-08, 01:09 PM   #4
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Looks like you can get it in either square taper or isis, and Jenson just has square taper. If it comes down to it, seems like a whole new 5d crankset is not that expensive.
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Old 02-27-08, 01:22 PM   #5
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Go to the LBS and have them peruse the QBP parts catalogue. Should be in there.
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Old 02-27-08, 02:05 PM   #6
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Thanks for the help guys. Just one more thing. How do I get this crank arm off? Like what type of crank tool do I need? Again thanks for the help.
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Old 02-27-08, 02:15 PM   #7
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Truvativ also makes a PowerSpline bb. It's the diameter of a sq. tp., but splined. It's OEM and it sucks. Some of their lower end cranksets used this in some instances (Blaze, 5D, ISOflow)
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Old 02-28-08, 08:35 AM   #8
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Standard crank removal tool should work fine.
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Old 02-28-08, 11:53 AM   #9
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You can use a standard crank removal tool if it is a square tapper. Go to your local bike shop, we always have used and new replacement left crank arms. If it's the powerspline demand a new crank because they suck. I have never seen more problems with crank arms falling off when it comes to Truvativ.
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