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Old 08-04-09, 09:57 AM   #1
bluenote157
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what is the name of the drop out screw tensioner thing??

and what is the proper alignment/adjustment of this thing? It seems pointless as my rear derailleur takes up the slack of the chain anyway. However, I could be missing something and maybe it does serve a purpose??

Here is a pic of one. *pic stolen from soradicals flickr cuz i think his bike is hot*
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Old 08-04-09, 10:06 AM   #2
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They're called "dropout screws".

Their function is to speed wheel changes by providing a solid stop for the axle on both sides. That way (once they're set) you don't have to visually align the front of the tire with the frame.
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Old 08-04-09, 10:08 AM   #3
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It's called a dropout adjuster. It merely helps to locate the rear wheel squarely. It seems like there is always an active thread asking about them.
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Old 08-04-09, 10:11 AM   #4
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cool thanks. Hmm.. i guess frames were not as straight as they are now seeing as my two newer bikes have vertical drops with no room to shift it up-down (or side-to-side in this case)??
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Old 08-04-09, 10:18 AM   #5
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Niagara has them:

http://www.niagaracycle.com/product_...ucts_id=407258

I bought a set to replace a bent one on my PUCH.
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Old 08-04-09, 12:21 PM   #6
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They also help with Single speed set ups and chain tension.
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Old 08-04-09, 01:30 PM   #7
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Quote:
Originally Posted by bluenote157 View Post
cool thanks. Hmm.. i guess frames were not as straight as they are now seeing as my two newer bikes have vertical drops with no room to shift it up-down (or side-to-side in this case)??
The frames were straight, but with horizontal dropouts one can adjust the wheelbase of the bike for different rides.
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