Rear dropout conversion - new wheel?

Re: Re:

suffolksky":1ervwo1k said:
... is there any mechanical reason to change the crank set?
Click to expand...

The cranks aren't fussed about how many sprockets you have at the rear.

You'll need new chainrings though, as 9 speed chains are narrower internally than 8 speed and fewer.
 
Re: Re:

suffolksky":tfkubwja said:
Okay that's good. But lastly, is there any mechanical reason to change the crank set? I think i want a new one, but I'm guessing the rest of the conversion would actually work without changing it?
Thanks for all your help again
Click to expand...

Put simply, no. If you run (say) 11 speed with a 6 speed crank you might have problems with the chain getting stuck in the larger gap. Anything from 7 speed upwards is pretty interchangeable.

Personally I think modern Shimano outboard BB cranks look over-styled and horrible, especially with a classic steel frame. Others may have different tastes.
 
suffolksky":1fwljmxn said:
Hi there,
I'm converting the rear dropout on my dawes galaxy from 120mm to 130mm...
Click to expand...

That's quite a lot: 120mm to 126mm, or 126mm to 130mm is more usual.

If you do it, then I'd consider bracing the brake and chain stay bridges, by tightly binding or clamping them.
 
Re:

My frame was actually misaligned so i went for the slightly less refined method of a plank of wood. It took a while, but expanded the dropouts and realigned the frame well.
 
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