From sea level to 6500ft ish

[cuz]

The bike is tuned w/a "perfect" a/f mixer for sea level. But how bad would it be going up to 6k ft ?

[IF13]

Originally Posted by cuz

The bike is tuned w/a "perfect" a/f mixer for sea level. But how bad would it be going up to 6k ft ?

That's some specific tuning....I don't have any input besides saying that's kind of cool.

[Motofool]

Originally Posted by cuz

The bike is tuned w/a "perfect" a/f mixer for sea level. But how bad would it be going up to 6k ft ?

You will have available about 85% of the air that you have at sea level.

As these CV carburetors meter fuel based on air flow and vacuum, they are somewhat altitude compensating.

Read this article, looking for "Correcting for Changes in Temperature, Altitude and Humidity":

http://justkdx.dirtrider.net/printcarbtuning.html