Originally Posted by
rccardr
Not a big load on those stays at all. Going from 126 to 130 is completely fine, based on my personal experience with literally dozens of Cannondale frames tha have been refurbished with 130 OLD rear wheels. You need a 4.5mm spacer for the back of the cassette, and it will line up just fine with your derailleurs. Should require only a slight adjustment to the RD, if any.
By 1989, many Cannondale frames were being produced with 128 spacing to allow installation of either 126 or 130 wheels.
Thanks, that is very helpful.
I will have to measure my frame, it might be 128mm. If my current wheel is 130, I know it fits with pushing the chainstays outwards a bit, could be 2mm.