Propshaft problem

[David Stepney]

Sounds a bit if your engine is down on power. The Mk2 Ruby was the most powerful of the standard cars, with (as I recall) 17.5 bhp and the car that I knew some years ago would almost reach 60 mph given enough road. The rolling radius difference between 400 x 17 and 4.50 x 17 tyres give only a difference of 18 revolutions per mile (809 as against 785) so there would be no discernible difference.

Are your brakes correctly adjusted so that they are perfectly free when off?