exverbrenner
Posts: 30
Joined: 1/16/2006
From: Wallisellen, SWITZERLAND
Status: offline
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hi chris!
don't wanna argue with you about the quality of axi's, i'm using 5330/18's myself on my patternships since last year. but you can really save your money, forget about that 5360 and the doubleaxi, i saw prototypes in pipers, that's ok. but for an extra, replacing a zdz80, no way. these are scale-type motors, like the actro and the rs from germany. the kV is way to low, you get only between 3000 and 3800 rpm on the prop with 10S, and if you start loading it up, it'll go, the windings aren't made for 100+ A. and you either need that or 12 to 15S to get the desired rpm's. unless you want the first ECO-Extra  fact is, the design of that/those outrunners prohibits output over 3kW, and to fly my 20 lbs raven as it was meant to be flown, i need at least 4kW, 5 would be better, but i still hesitate to go over 10S (charging, handling, danger...) i've got 4kW now, on 35V at 115A, and the Neu2215/1,5Y still stays cool, because steve neu currently makes the most efficient electric motors in the business, producing some 92%. the loss, 8% friction&heat of 4kW is 320W, still a good soldering iron. that axi at 115A will run around 77-80% efficiency, producing about 800W of heat. that will work for 3 minutes...and the damn thing is heavy, 1350gr for the single, 1550gr for the double, that Neu with gearbox (yeah, i know, it sounds like your mom's 30-y-o-kitchen-aid  ) comes in at a lean 990gr. in old money, that's saving between 13 and 20 oz. all with much, much less power. sorry again, but it's comparing Yugo's to Porsche's 
roger
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All Forums >> Electric Aircraft Universe >> Electric Pattern Aircraft >> 33% Electric Yak 54 Video - hardcore! 
33% Electric Yak 54 Video - hardcore! - 
but the yak is definitely a new gen aerobatic plane, with the raven some of the stuff this guy's flying is simply not possible. eat your heart out! 
