An old Raleigh steel track frame (pretty light too) and a collection of bits and the down the pub, work hack bike is born.

Proper track crank has 48 teeth on it, and the biggest rear sprocket i got is 18 so will that work. This site GEAR SIZE is handy for talking in old man speak and says thats 72 inches. So doing a quick check with 54-21 which is just useable up most hills round here that comes out as 69.5. So could be a bit tough, especially when knackered.

long time since a saw the fork offset done at the very bottom of a fork, very flimsy looking.