Bigger engines and higher nitro is the best way to get around the problem. For the higher altitudes I need to lean the idle mixture a little bit to get the engine to run right. A lot of times we have to void the manufacturers warranty to get a plane to fly like it would at sea level. The fields that I regular are between 4200 and 7200 feet with density altitudes usually between 7,000 and 10,000 feet. That is up to a 25% power loss over sea level power. Not to mention the stall speed is increased, so you have to watch landing speeds. It's not bad when you get used to it.


Check this web site out:

http://wahiduddin.net/calc/calc_hp_dp.htm

To find the information needed go to www.weather.com and type in your zip code.

At my location I currently have 17% less power than that of standard conditions and we have 12 degrees to go to hit the high for the day. So were a 40 would go, put a 46. Replace a 46 with a 50-61. Replace a 90 with a 120.

I just bought a 4 wheeler and wish I would have bought the one with fuel injection. I have been running it between 4,000 and 10,000 feet and it doesn't run well at the higher altitudes because the carbs are jetted for the lower altitude.