Thanks for your comment. I geared it up slightly to try and keep crank speed down on the road so it does go well. I tried to work out the speed by timing the rotation of the rear wheel and knowing their diameter worked out that it was about 9.5mph. That was regulator about 1/2 open. It didn’t feel fast when on it but cranks going round at a reasonable rate so wouldn’t want to go much more on a run. Plus it’s not got the best braking technology.