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removing small chain ring

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removing small chain ring

Old 10-17-06, 03:29 AM
  #1  
Riles
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removing small chain ring

I have a shimano 105 crank set, it's the got an integrated BB, so I assume it's a new version.

I never use the small chain ring and thinking I will take it off - I assume it can be simply removed (do I need any special tool ? )

& only other thing I need to do is tighten the L screw on the FD to ensure I do not accidently flick it off of the middle ring ?

Thanks.
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Old 10-17-06, 04:26 AM
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I don't know that specific crank, but most small ring removal only needs a crank puller and the proper sized allen wrench.
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Old 10-17-06, 07:23 AM
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Not to sure with compatibility requirements I know your going to need short stack bolts to put it back together because you gained some extra space not to sure how the FD will like it maybe some one with wisdom will help you with that
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Old 10-17-06, 07:29 AM
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Originally Posted by Riles
I never use the small chain ring and thinking I will take it off - I assume it can be simply removed (do I need any special tool ? )

& only other thing I need to do is tighten the L screw on the FD to ensure I do not accidently flick it off of the middle ring ?
Correct. As Little Darwin said, you 'll need a crank puller to remove the crank, in order to take off that small chainring, and a torque wrench is helpful when re-installing the crank. Then, yes, be sure to adust the limit screw on your FD so it won't shift your chain below the middle chainring. Your chainrings will still sit out where they do now, unless you get a different bottom bracket with a shorter spindle.
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Old 10-17-06, 12:47 PM
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Others are right about the FD adjustment screw. But, if it is an integated BB you don't need a crank puller. You just remove the non-drive side arm and pull the crank and spindle out the other side.
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Old 10-17-06, 01:04 PM
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everybody is right on. But what you have to watch out for is how far do the mounting posts (where the little ring is bolted) on the crank arm stick out? If you shorten the BB spindle (will) might be hitting your chain stay. So check that before you do anything.
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Old 10-17-06, 02:13 PM
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Originally Posted by humble_biker
everybody is right on. But what you have to watch out for is how far do the mounting posts (where the little ring is bolted) on the crank arm stick out? If you shorten the BB spindle (will) might be hitting your chain stay. So check that before you do anything.
Not an issue with the integrated BB.
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Old 10-17-06, 02:20 PM
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I will never understand this impulse, but if it is a ten speed rig it should just require an allen wrench and a screw driver to set the limit.
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Old 10-17-06, 05:04 PM
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Originally Posted by SoonerBent
if it is an integated BB you don't need a crank puller. You just remove the non-drive side arm and pull the crank and spindle out the other side.
Nope. An "integrated BB" means a 9-speed group or FC-5500, which has self-extracting crank bolts - so no puller - but that is not how you remove it. Each side comes off independently.

What you describe is the "new stuff" or FC-5600 that uses Hollowtech II arms with the axle part of the spider and separate (non-integrated) bearings (only) in the BB. These use a pinch bolt on the left crank and nothing on the right crank since the whole thing comes out as unit.

Don't know how the OP knows that he has an "integrated BB" when he doesn't know how to get the cranks off, though...


Frankly, I think removing the little chain ring is dumb. Thing can't weigh much more than 30 grams.
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