Agility 125 Performance @ High Elevation

[AgilityOnAnRV]

I've been riding my Agility 125 in Austin, TX which is pretty close to sea level (~500' elevation).

This summer we'll be traveling around the country and plan to bring the scooter along. How should I expect performance to change at much higher elevations, say 5000' and 7000'?

Are there any modifications that I need to do or should do to prepare for the change?

[jprestonian]

This will give you some good data.
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[tortoise]

"Although a CV-equipped bike doesn't go rich at altitude the way a fixed jet carb does, it will lose power due to the lower air pressure, which is reduced about 10% for every 3,000' gain in elevation.   With 10% fewer oxygen molecules going into the engine on each intake stroke, we should reduce the fuel by 10% to get back to that "ideal" fuel-to-air ratio of 12.5 to 1 for maximum power." . . attribution


For the benefit of others, please update this thread with your findings.

[AgilityOnAnRV]

"Although a CV-equipped bike doesn't go rich at altitude the way a fixed jet carb does, it will lose power due to the lower air pressure, which is reduced about 10% for every 3,000' gain in elevation.   With 10% fewer oxygen molecules going into the engine on each intake stroke, we should reduce the fuel by 10% to get back to that "ideal" fuel-to-air ratio of 12.5 to 1 for maximum power." . . attribution


For the benefit of others, please update this thread with your findings.

I definitely will, although it'll be at least a couple of weeks before I'm testing this.