P.S. The MotoGuzzi V8 500cc lapped there at a near constant 187 mph.
Full dustbin fairing of course.
Hands up all that don't believe that speed, out of ~70 bhp.
When the flag drops, the bullshit stops, the stopwatch doesn't lie........[/quote]

No it does not surprise me regarding MotoGuzzi-they did after all have their own wind tunnel back in those days, and won the 350 & 500 World Championship on dustbin faired singles.

Jeandr wrote:

Bernhard wrote:As for Dunstall, what I have to say about his Norton parts offered, (and I naively have brought them in my younger days) is unprintable!
If any thing, his Dunstall road cam for a twin I purchased was so far out on the cam lobes that they bear no relation to the actual timing in his catalogue. When fitted, it made the bike slower!
His race cam was a flat grinded on every 5 degrees!!!…. A serious engineer?- I beg to differ.

You are too harsh, after a few turns of the engine, those flats would have blended into a smooth curve

Prehaphs you should have a look at this;
just-how-not-good-this-t10907.html

Bernhard wrote:You are too harsh, after a few turns of the engine, those flats would have blended into a smooth curve

Jean

PS I must admit all of the stuff I bought from Dunstall looked a lot better in print and lasted a lot longer in my mind than in real life.

Sorry if you don’t agree with me, but if you think about it when you state ‘after a few turns of the engine, those flats would have blended into a smooth curve’…….I ask you, where does all the metal swarf go?
While we are on the subject ever seen the damage when a camshaft snaps in two while being ridden? Yes… it was from P.Dunstall![/quote]

You didn't see the ironic at the end of my phrase and the PS I do agree with you, everything I ever bought from Dunstall either broke or did not fit fortunately I never bought any internal engine components.

Jean

You didn't see the ironic at the end of my phrase and the PS I do agree with you, everything I ever bought from Dunstall either broke or did not fit fortunately I never bought any internal engine components.

Jean[/quote]


Well, thanks Jean, unfortunately I’m too much of a computer beginner to understand all the signs, as I am sure some others out there. You live and learn.