Size of plane ??????

I dont know about the Hangar 9 ones, but the .40 Kyosho Cap did fly on a .40, a tad better with a .46 and the .60 is about right with the recomended engines...

I dont understand people that recomend "if it says .40 on the box, use atleast a .60 and move the radio stuff back instead"...

If it says Cap 232 .40 use a .40 or something close to a .40, if it says .60 use that, or the next size bigger...

(although this, I have tryed a funflyer recomended a .40 with a Irvine .38 that was faster and more powerful then my own identical plane with an Irvine .40, so sometimes a smaller one works too, but that engine is awsome)

Not much to address that you haven't already experienced.

So why does Hangar 9 reccommend a maximum of a .73 4-s, and Kyosho reccommends a MINIMUM of a .70 4-s, with a .91 4-s maximum WHEN THE PLANES ARE ESSENTIALLY IDENTICAL?????????

David

What you would notice is that the plane will use much less runway because of the denser air. The plane will fly slower because of the increased drag of that same denser air. Your first few landings will be hot as heck because your eyeball is trained to a 5000 foot stall speed.

The engine will need to be made richer because of the increased air density. An airplane always stalls at the same indicated airspeed (read if you had an air speed indicator in the plane). The ground speed to achieve that indicated airspeed goes up with altitude and temperature.