For Sale: Bikes & Frames: Bates Volante, Peugeot, very large Dawes, Motobecane, Koga Miyata etc

yes, there's a difference, because a single speed bike doesn't have a chain tensioner (the 2nd function of a derailleur) and the distance between rear hub and bracket should therefore be variable. Long, horizontal dropouts are ideal for a single speed/fixed bike. This is not necessary on a geared bike, so you could have very short or even vertical dropouts.

Hi,
I'm interested in building up a bike from scratch and I'm just doing some research. I would be quite interested in buying one of the frames here but I don't want to waste money for having a lack of knowledge.
I was wondering if anyone could help me though.
I already have a single speed bike and I want to build up a geared bike for longer commutes. When buying the frame however, what do I need to look out for?

Are there differences in the frame for a single speed bike and a geared bike?

Any help would be great,
Thanks
John