I feel like I know quite a bit about this, I run a cheap to repair 400's and 450's the one I use now is a copterx 450 black angel, my worst crash cost me three servos and about 50 pounds to fix my heli and a new battery total for crash 150 pounds, I replaces the servos for metal geared hitec's that cost 80 pounds and so far they have lasted 3 years and many crash's and are the best thing since sliced bread, they have saved many times what they are worth, that was 3 years ago on a walkera 60B, it was the servos that made it cost so much, up grading from the plastic ones, and is the only crash to cost anywhere near that much, now I run a better heli with the same good servos, my normal crash cost's about 15 pounds with the worst crash with my black angel costing 50 pounds plus a battery, it was the worst crash made even worse by not shutting of the throttle, it came down from 100 feet and hit concrete very hard but not before hitting a metal railing which really didn't help, even on the rebound I still had it in IDLE 2, I was still learning and had just started to use IDLE programs, hitting the kill switch as soon as I lost it was not programed in to my head back then,

cognitive learning theory in the classroom

There is something else that goes but it's not the same bit like the blades etc., it could be a rear blade a paddle or anything but it works out about 15 pounds for most crash's now, an expensive one would cost between 25 to 35 pounds, I don't get many that cost that much, and I keep a load of spares so it's no problem when I do crash and I don't have to pay over the top price just to get flying quickly, I probably have enough spares to last two years,

cognitive learning theory in the classroom

Big heli's are big bucks, I don't under stand why, I have a trex 550e 3G which I've had to buy new blades for and have been looking as spares, I keep all the spares I'll need for my 450 size heli and was thinking of doing the same with my 550, lol that's the best joke I've thought of, most parts aren't to bad more or less what you would think, not all some parts are a joke, blades and canopy are a real joke, I think one person thought of a number and the next doubled it then four more did the same, a over hundred pounds for the two most likely parts to brake in a crash, and every crash, it's taking the piss, and they wonder why every one buys a 450, you can buy a 450 for less than a set of blades for a large heli,

cognitive learning theory in the classroom

I like my 550 but come on, 70 pounds for a set of edge blades or the cheapest FBL blades still cost 45 pounds, it's think of a number etc, and that bit of plastic we call a canopy would cost less if it was made from sliver, it just as bad as the blades for price, all the other parts I've found the price for isn't that bad and when you think there made more accurately than a canopy and make for metal they look like the price is about right,

cognitive learning theory in the classroom

450 is the only way to go, make it top of the line with making it your self from the best bit's, it won't cost much less to buy than a large heli but the running cost's are much less and the radio and receiver will move up to the bigger one when you can fly and your keep the small one for the dangerous tricks when you get good at sport flying,

cognitive learning theory in the classroom

Big heli's are big bucks, I don't under stand why, I have a trex 550e 3G which I've had to buy new blades for and have been looking as spares, I keep all the spares I'll need for my 450 size heli and was thinking of doing the same with my 550, lol that's the best joke I've thought of, most parts aren't to bad more or less what you would think, not all some parts are a joke, blades and canopy are a real joke, I think one person thought of a number and the next doubled it then four more did the same, a over hundred pounds for the two most likely parts to brake in a crash, and every crash, it's taking the piss, and they wonder why every one buys a 450, you can buy a 450 for less than a set of blades for a large heli,

cognitive learning theory in the classroom

I like my 550 but come on, 70 pounds for a set of edge blades or the cheapest FBL blades still cost 45 pounds, it's think of a number etc, and that bit of plastic we call a canopy would cost less if it was made from sliver, it just as bad as the blades for price, all the other parts I've found the price for isn't that bad and when you think there made more accurately than a canopy and make for metal they look like the price is about right,

cognitive learning theory in the classroom

450 is the only way to go, make it top of the line with making it your self from the best bit's, it won't cost much less to buy than a large heli but the running cost's are much less and the radio and receiver will move up to the bigger one when you can fly and your keep the small one for the dangerous tricks when you get good at sport flying,

cognitive learning theory in the classroom

[size=2]yep $432.00. In a hard, full power, side on crash with a 90 nitro, the parts cost can add up pretty fast - specially when it takes out a set of top brand mainblades and a hatori muffler system that will total almost $300.00 just for them.Cognitive learning theory in the classroom of course I have had crashes with the same heli that only cost me the price of a landing gear strut and tail boom (about $25.00).

As for size, I find it a lot easier to keep a good 550 sized electric oriented through any kind of training from hover through any 3D maneuvers.Cognitive learning theory in the classroom ditto for crashes resulting from component failures, which I found to be much more common on my 450s. So though the cost of parts may be a bit more for my swift (a 550 sized electric) then on my T450"s, over a flying season, I will crash the swift a lot less, and advance much faster, having spent far less time repairing from crashes and paying for them.Cognitive learning theory in the classroom