Hi there - am totally new to this site so first thanks for time to read this and please point me to any other threads which might help.
I am looking to put together a single speed bike for commuting every day. The ride is about 10km. I have ridden a Diamond Back hybrid for about 15 years. It weighs a ton and I would like to put together something much lighter so I can increase my distances. Single Speeds look like fun and good training too. I have a bad back but since I have put the handlebars up an inch or two have been able to commute again with not too much trouble. I dont need anything special just a fun fast commuter. I would probably put bullhorns on it, they look like they might gove me an OK riding position. I also don' twant to end up getting a frame and then having to spend heaps on fitting it out.
So this brings me here...I have been hunting around for frames on ebay but realise I have no idea what I am looking for. I don't know much about frame geometry, but for example this frame...
...which I have been watching seems to be strange shape at 55 x 55 cm when compared to my hybrid! Would it be a good starting point to build something up? What sort of effect would this sort of geometry have? I'm 5'10" so assume most medium to large frames would be OK.
Heres another frame I have seen on ebay - is it ok to use a standard road frame or is there stuff I need to watch out for?
As you can probably tell, I dont know heaps about bikes. I have been riding the one bike for years and Im just now stating to get excited about bikes. Wierd. Any ideas advice or thoughts would be greatly appreciated. Thanks, Cal.