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setspeed
Joined: 05 Apr 2007
Posts: 116
Location: United Kingdom
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 Posted Fri Nov 6, 2009 5:02 pm |
I want to replace my chainrings sometime soon, going from 22/32 to 26/36 setup.
I have a Truvativ Firex GXP crank and I don't want to pay ly LBS to take the crank off and swap the rings over for me - seems like I should be taking care of a simple job like thqat myself.
What tool/s do I need to remove my crank, can anyond advise please?
Thank you!
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supersonicLives Here
Joined: 25 Nov 2005
Posts: 48031
Location: Chapeltown, Sheffield
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nicklouseLives Here
Joined: 20 Mar 2003
Posts: 48247
Location: A Yorkshire man in Sweden
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setspeed
Joined: 05 Apr 2007
Posts: 116
Location: United Kingdom
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Posted Fri Nov 6, 2009 5:24 pm |
I've not really had a look at it yet, and not home at the moment.
The one key release part - what is the "key" needed, is it a specific tool?
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nicklouseLives Here
Joined: 20 Mar 2003
Posts: 48247
Location: A Yorkshire man in Sweden
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setspeed
Joined: 05 Apr 2007
Posts: 116
Location: United Kingdom
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Posted Fri Nov 6, 2009 5:32 pm |
Oh right! I have them, but I don't know if I'd get enough torque to undo/tighten a crank bolt!
Perhaps I ought to use the opportunity to buy a torque wrench!
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richg1979
Joined: 01 Sep 2008
Posts: 205
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Posted Fri Nov 6, 2009 7:45 pm |
you should be able to do it with a normal allan key.
i think the outer extracting cap uses a 10mm allen key. dont touch the outter cap, there will be a smaller (8mm i think) allen bolt if you look through the 1st allen key hole.just undo the inner allen key bolt and it should pull the arm off.
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setspeed
Joined: 05 Apr 2007
Posts: 116
Location: United Kingdom
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Posted Fri Nov 6, 2009 8:13 pm |
| richg1979 wrote: | you should be able to do it with a normal allan key.
i think the outer extracting cap uses a 10mm allen key. dont touch the outter cap, there will be a smaller (8mm i think) allen bolt if you look through the 1st allen key hole.just undo the inner allen key bolt and it should pull the arm off. |
Right, sounds well easy, I'll give it a go with the tools I have.
Thanks everyone for the advice!
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k2rider
Joined: 12 Aug 2006
Posts: 388
Location: County Durham
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Posted Fri Nov 6, 2009 8:52 pm |
the outer self extracting ring uses a 16mm allen key.
who cares? |
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richg1979
Joined: 01 Sep 2008
Posts: 205
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Posted Sat Nov 7, 2009 1:06 am |
16mm?????? i thought it would of been 14mm max, the thread in the end of the arm is only about 14-16mm
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nicklouseLives Here
Joined: 20 Mar 2003
Posts: 48247
Location: A Yorkshire man in Sweden
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richg1979
Joined: 01 Sep 2008
Posts: 205
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Posted Sun Nov 8, 2009 12:26 am |
i stand corrected. 
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