Originally Posted by Edelweiss-Motorsport
This is not questioning what Helmut Gietel did in the 70's
the name's Udo Gietl.
I have a loose email contact to him and although he represents the 70ies era he has a lot to tell.
At the moment he's restoring his old R90S street bike, giving it a roller cam setup.
It's often heard that the old power figures are exaggerated. I tend to believe that.
On the other side in '76 the B&S bikes were trapped at over 143 mph or 234 km/h top speed.
The later bike at more than 150mph.
With near stock R90S aerodynamics.
I'd say it takes some serious power to get there?
Greetings to the fire post