Bike Carbs on pinto and cvh

[davidimurray]

Ok, just been playing in Excel and got some interesting answers! I will upload the spreadsheet this evening, but in the meantime have a look at the figures below, based around a VE of 0.8

1.8l engine 6000 RPM 18l/s
2l engine 6000 RPM 20l/s
600cc bike 16000RPM 16l/s
750cc bike 13000RPM 16.3l/s
1000cc bike 12000RPM 20l/s

So by my guess - the carb from a 1000cc bike should be ideal, but loads of people use 600cc ones without problems. I guess it probably gives them a very sharp throttle response as opposed to pure top end. The 600 carb should still be able to flow 20l/s but at higher velocities and with a little top end loss.

Cheers

Dave