If you don't know who Graeme Obree is... kill yourself and then yahoo him.
If you don't know what the hour record is... kill yourself and then yahoo that hot action too!
Anyways... you could also just rent "The Flying Scottsman" <--- its good.
But yeah... here's the bike he's using.
1. Steel.
2. 138 Gear inches! 67 x 13! Hoooooooooooly buckets!

And no... this is not a joke.