- Joined
- Nov 18, 2005
- Messages
- 922
Has anyone got access to these records? Links to websites maybe where the official records are held? Magazines are notoriously unreliable at checking facts. It would be nice to see the info from the horse's mouth.
pommie john said:Has anyone got access to these records? Links to websites maybe where the official records are held? Magazines are notoriously unreliable at checking facts. It would be nice to see the info from the horse's mouth.
ML said:Horsepower is NOT the final factor in what gives any motorcycle its ultimate top speed. Power to Weight Ratio is equally important as is Streamline Coefficient.
Mick
Carbonfibre said:If there is no need to have BHP to provide good performance, then in the case of the Norton Commando how are 170mph top speeds possible?
pommie john said:ML said:Horsepower is NOT the final factor in what gives any motorcycle its ultimate top speed. Power to Weight Ratio is equally important as is Streamline Coefficient.
Mick
No. Power to weight ratio has nothing to do with ultimate top speed. It affects how quick you get there, not top speed.
Streamlining is very important, but i go back to my graph, were the JPNs and Vincents really that much better streamlined than modern race reps?
Maybe tomorrow I'll plot these claims on my graph and see if they fit the trend.
When I was down at his place a few years ago I was looking over his '72 race bike with full fairing and he mentioned a 170 clocking at Imola or Monza the year before , so that would have been about 1999 'ish. Of course that could have been 170km/h :wink:Ain't yet found Normal White's 170 mph article yet but creeping up on it.
MIck > Ultimate top speed? Drag racer acceleration? You cannot achieve 170MPH on a Commando equipped for general road use. Anything remotely capable of doing so must have a specially built transmission, race tuned engine, hi octane race fuel and all enclosed streamlining. The motor would need to put out around 90BHP, a rolling weight of less than 160Kg and a CD half of the stock frontal area / resistance. (rough estimate).
JimC said:Put a GPS on those 130+ mph street Commandos, it'll slow them down considerably.
ML said:There is a difference between "quick"and "fast - As I mentioned earlier.
Rohan said:pommie john said:Has anyone got access to these records? Links to websites maybe where the official records are held? Magazines are notoriously unreliable at checking facts. It would be nice to see the info from the horse's mouth.
I think we will be extremely lucky if any of that stuff is on the web.
JimC said:Put a GPS on those 130+ mph street Commandos, it'll slow them down considerably.
Rohan said:Anyone know what the track is like at Sulby ?