Has to be road legal (ie have front brake for fixed or two for freewheel)
No minimum weight etc.
The CTT define some other rules that apply such as a max front wheel depth and distance of elbows from the head tube if using TT bars, but you are very unlikely to run into them with a hillclimb build... (Says the guy who ran TT bars on a HC today...)
Has to be road legal (ie have front brake for fixed or two for freewheel)
No minimum weight etc.
The CTT define some other rules that apply such as a max front wheel depth and distance of elbows from the head tube if using TT bars, but you are very unlikely to run into them with a hillclimb build... (Says the guy who ran TT bars on a HC today...)