I will start this right now and maybe finish it tonight or tommorow, just dont want to spend 20 minutes typing.... here goes
PV=nRT that is the ideal gas constant, that way you can find the number of moles of oxygen per unit of volume of air. This way you can account for the air temp, and altitude, and see just HOW much oxygen there is, the only hiccup is finding the exact pressure for altitude and barometric pressure, based on weather. Now, say you brought A barometer, a pen and paper with you into the hills, you could find out just how much oxygen is present in the air around you. As I dont know how much octane is required for X amount of oxygen to run safely, this is somewhat useless, BUT, if someone were to calculate, how much they were able to run with X amount of oxygen it could be a very useful data composition, and if enough people provided there info It would be a great resource, this would just take a lot more effort for not much that sledders dont want to try.
as for random thoughts on boost at elevation, I bought a boost gauge that was zero'd by a guy who rode in california. I looked at it at 6000 ft where I live in MT and it reads 2 psi of vaccum ~ at the time I looked at it, meaning there was approximately 12.7 psi air pressure assuming it was zeroed for 14.7psi.
If all boost gauges were zero's at 14.7 then the loss for elevation combined with the boost being run would actually be a VERY usefull number, although your gauge may only read say 7psi of boost on your motor, you could be running 10 because you are high in elevation. This number would be VERY useful as to what kind of fuels could be run.
CC as for octane, barometric pressure directly affects air density, as pressure decreases so do density, therefor less pressure = less octane as there are less oxygen molecules per unit of volume to burn.
this was defniately a little jumbled, I will come back to it later and add what info I can.
PV=nRT that is the ideal gas constant, that way you can find the number of moles of oxygen per unit of volume of air. This way you can account for the air temp, and altitude, and see just HOW much oxygen there is, the only hiccup is finding the exact pressure for altitude and barometric pressure, based on weather. Now, say you brought A barometer, a pen and paper with you into the hills, you could find out just how much oxygen is present in the air around you. As I dont know how much octane is required for X amount of oxygen to run safely, this is somewhat useless, BUT, if someone were to calculate, how much they were able to run with X amount of oxygen it could be a very useful data composition, and if enough people provided there info It would be a great resource, this would just take a lot more effort for not much that sledders dont want to try.
as for random thoughts on boost at elevation, I bought a boost gauge that was zero'd by a guy who rode in california. I looked at it at 6000 ft where I live in MT and it reads 2 psi of vaccum ~ at the time I looked at it, meaning there was approximately 12.7 psi air pressure assuming it was zeroed for 14.7psi.
If all boost gauges were zero's at 14.7 then the loss for elevation combined with the boost being run would actually be a VERY usefull number, although your gauge may only read say 7psi of boost on your motor, you could be running 10 because you are high in elevation. This number would be VERY useful as to what kind of fuels could be run.
CC as for octane, barometric pressure directly affects air density, as pressure decreases so do density, therefor less pressure = less octane as there are less oxygen molecules per unit of volume to burn.
this was defniately a little jumbled, I will come back to it later and add what info I can.