Chain spacing
01-11-15, 02:01 PM
#26
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I'd just do it. Put 3 mm spacers on each side. Throw the wheel on. Throw the BB and crank spider on. See if 1) the axle is long enough to solidly place itself in the dropout. That is all it has to do. The quick release does everything else. 2) is the quick release skewer long enough? This is important. You want more than just a few threads. It look to see that the end is at the end of the nut (or the threads of the nut). But longer quick releases are very easy to find. Many choices. (You probably have a pair on hand you can borrow from another bike.)
Now, can the derailleur be adjusted to cover the new range using the hi-low adjusting screws? I suspect it will do this easily whatever brand it is. And does the chainline look acceptable? With a 5 speed, the big ring being in line with the 2nd smallest cog will to work just fine. Even between the small and 2nd smallest will be OK. Traditionalists will shudder, but modern riders have been doing far worse by the thousands!
Go for it!
Ben
Now, can the derailleur be adjusted to cover the new range using the hi-low adjusting screws? I suspect it will do this easily whatever brand it is. And does the chainline look acceptable? With a 5 speed, the big ring being in line with the 2nd smallest cog will to work just fine. Even between the small and 2nd smallest will be OK. Traditionalists will shudder, but modern riders have been doing far worse by the thousands!
Go for it!
Ben
01-11-15, 02:01 PM
#27
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Yes, your 120mm designed skewers might not fit in 126mm spacing. They may only engage a few threads, which could cause them to fail.
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01-11-15, 02:02 PM
#28
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Yes, but you might not. When all is done, assemble the skewer normally. You want the nut to turn on about 6 turns for it to be as good as it can be. There' a bit of pinch room so let's say the t 6 is a pass, 4 or fewer a fail, and in between a judgement call.
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Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
