Monterey, CA - USA
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I totally agree - large helicopters are the way to go if you can afford it. However, I'm not convinced of electric on the 90-size yet. When I have a new set of batteries, I totally love the way my 600ESP flies, but the problem is, 40 or 50 cycles into the pack, it's weak and pathetic. Fine for just mellow FF, but no fun for anything aggressive. The packs I was using ran about $260 each, so my cost per minute of good flight was at best $1.30. Packs are cheaper these days, so with Turnigy packs, or something similar, I suppose I could fly for $0.45/minute on the 600, or $0.90/minute on the 700e. I run my 700N on CoolPower 30, and I get nearly an hour per gallon, and pay about $25/gallon, so that's about $0.45/minute. I believe the flight weight of the 700e is considerably higher than the 700N as well - anyone have both that can post actual weights?
Large helicopters fly a lot better than small ones. It’s much easier to learn 3D. In the past the problem was battery cost but with the cost of nitro fuel going up and the price of LiPo battery now 1/4 of what they were a few years ago large electrics are more practical. Electric helicopters also have better performance than nitro.
If you can afford to get a 700E go for it.
A 550E and a 700E is the perfect fleet because you can use the same batteries in both.
Certainly there are many more pros and cons, but I think in terms of cost of operation, nitro wins.
Trex 700N, Trex 600ESP, Trex 500, Trex 450Pro