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Rear Axle Spacing(8 posts)

Rear Axle Spacingoldbutslow
Sep 5, 2003 3:26 PM
Well, after a 10 year hiatus, I have pulled the old Serotta
out of hiding and started riding again. Natually, I am
struggling a little bit with my 13-21 7 speed cassete. I
would like to upgrade to a 9 or 10 cog drivetrain which I
assumed would require stretching the back end to 130 mm.
However, I read in the General forum where an individual
"forced" the wheel in and everything is hunky dory.

Is this OK? Could this not lead to axle breakage?

thanks for your knowledgeable replies.

tony
Probably can just put in the new wheelKerry Irons
Sep 5, 2003 4:13 PM
You'll be springing the frame 2 mm on each side - not that much. I did this on a smaller scale (about 1mm total spread) and found that after a few 100 miles, the frame had spread and I no longer needed to spring it to install the wheel. Axle breakage can come from dropouts that are misaligned, but that shouldn't happen when you just spread the frame to put in the wheel. It's actually more likely to happen when you attempt to spread the frame without the proper tools. I'd suggest that you spring the frame, and then check for alignment after some riding to insure that both sides spread equally.
That spacing wasn't 120, was it?cory
Sep 5, 2003 4:19 PM
I think standard was 126, and as Kerry said, you should be fine. I have one old frame, though, that used 120mm spacing. I'm not sure I'd be as comfortable with that. But what do you have to lose?
That spacing wasn't 120, was it?oldbutslow
Sep 5, 2003 6:00 PM
Definitely not 120. That would be a bit too much, I think..
Thanks for the input guys, like ya' say, what have I got to
lose.

tony
And it is steel, right? (nm)TFerguson
Sep 5, 2003 6:20 PM
Yes, thankfully. (nm)oldbutslow
Sep 6, 2003 7:36 AM
I've taken 130 to 120 with no problem. Track conversion. (nm)TFerguson
Sep 5, 2003 6:22 PM
No problem with a steel frameMR_GRUMPY
Sep 5, 2003 6:23 PM
My TT bike is spaced for 130mm, but I have no problem putting in an old 7 speed (126) wheel. That bike has campy 8 speed shifting, so a 7 speed freewheel will work fine as long as you lock out the last position.