Thread: 2 to 1 exhaust
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Old 02-24-2013, 06:38 AM   #102
Gnarly Adventurer
Joined: Oct 2007
Location: Bavaria
Oddometer: 485
Originally Posted by Edelweiss-Motorsport View Post
This is not questioning what Helmut Gietel did in the 70's
Hallo Dirk,

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

RGregor is offline   Reply With Quote