Jetting ???

[evo550]

Am I right in assuming that a bike jetted perfect for 500m above sea level, would run lean at sea level ?

[oldyzman]

Gday evo,
You could asume that, please consider the other factors, I think it goes something like this. High humidity / High Ambient temp / High altitude all result in less oxygen therefore more fuel, therefore runs richer.
"Others" please correct me if i am wrong as i would not like to mislead on this potentially expensive topic
OLDYZMAN

[Ji Gantor]

The higher you are the less oxygen in the air or as it is called "Thin Air"
Less oxygen does promote a richer mix.

Yes a bike tuned at 500m above sea level would run lean at sea level if all other wheather conditions were the same.

Ji

[lukeb1961]

http://www.iwt.com.au/mikunicarb.htm

or  think.. think...   reaches for ancient edition of University Physics - ah yes, the Ideal Gas Law.  Recalculate from first principles.  25 marks 

[micks]

rad