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Author Topic: Tips on cranks  (Read 4738 times)

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Offline FACTORe

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Tips on cranks
« on: July 10, 2007, 09:12:05 AM »
are there any tips on re-attaching a crank arm that fell off?

it is an external bearing set-up

Offline BillT

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Re: Tips on cranks
« Reply #1 on: July 10, 2007, 01:43:58 PM »
You need the proper tool (I'm assuming its a Shimano crank) to put the plastic washer/bolt thingy (assuming it wasn't lost when the arm fell off) on that pushes the crank onto the spindle and then you tighten the pinch bolts.  Park Tool's website is great for this kind of information:  http://www.parktool.com/repair/readhowto.asp?id=122
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Offline FACTORe

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Re: Tips on cranks
« Reply #2 on: July 10, 2007, 01:48:18 PM »
thank you - that site is great for repair info

Offline BillT

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Re: Tips on cranks
« Reply #3 on: July 10, 2007, 03:30:12 PM »
That site has saved me a lot of headache in the past - easy to navigate, easy instructions, and pictures!
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Offline Gregg

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Re: Tips on cranks
« Reply #4 on: July 10, 2007, 03:34:41 PM »
I have the Park Blue Book of bike repair, it is easier to get in the garage. ;D

Offline FACTORe

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Re: Tips on cranks
« Reply #5 on: July 10, 2007, 03:40:51 PM »
cranks have been put back on - hope they stay that way


Offline BillT

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Re: Tips on cranks
« Reply #6 on: July 10, 2007, 04:19:41 PM »
The new external bearing cranks don't need a ton of torque to keep them secure, but they do need to be checked often because when they get loose, there isn't much holding them on unlike the old-school square taper cranks.
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Offline slowfatguy

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Re: Tips on cranks
« Reply #7 on: July 10, 2007, 07:30:45 PM »
what kind of cranks do you have that the arm fell off?
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Offline FACTORe

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Re: Tips on cranks
« Reply #8 on: July 10, 2007, 11:01:49 PM »
the bottom bracket came apart and the crank arms/bottom bracket are stripped out so time to get something else

Offline Marcel Aguirre

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Re: Tips on cranks
« Reply #9 on: July 10, 2007, 11:30:16 PM »
Dang FACTORe... you being pedaling too hard!  Take it easy will you.....  Good luck getting things fixed and hopefully you are out nad about soon.  The LBS mus love you!   ;D ;D

Offline Gregg

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Re: Tips on cranks
« Reply #10 on: July 10, 2007, 11:57:16 PM »
lots of torque in those legs! ;D

Offline Jimbo

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Re: Tips on cranks
« Reply #11 on: July 11, 2007, 08:21:29 AM »
the bottom bracket came apart and the crank arms/bottom bracket are stripped out so time to get something else

Holy crap!!  :o  Is this on your roadie?  If it is, you must be cranking on that thing hard!
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Offline FACTORe

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Re: Tips on cranks
« Reply #12 on: July 11, 2007, 09:14:40 AM »
i dont think i was really cranking hard - i felt a little "tick" inside the BB and then it got progressively worse - apparantly the thing was tearing up from the inside out - by the time the crank arm fell off the BB was full of metal shavings and was toast

Offline Gregg

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Re: Tips on cranks
« Reply #13 on: July 11, 2007, 09:51:41 AM »
I bet I know where you are going after work today. ;)

Offline FACTORe

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Re: Tips on cranks
« Reply #14 on: July 11, 2007, 10:10:11 AM »
yea - getting new cranks and bb after work

 

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