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"full sized" rc helis? - 6/25/2006 9:09:43 PM   
superhornet59


 

Posts: 91
Joined: 1/9/2005
From: Mississauga, ON, CANADA
Status: offline 		I was browsing through gstuff and (i forgot where) but i came across a 'full sized' electric heli. now i am beyond extremely skeptical that that meant a full sized in real helicopter sized rc. but i do beleive it was like gas sizes. so, are there any .30 .50 ect sized electric helicopters out there? I like the idea of a big heli because you cn fly outside, but the silence and cleanness of electric is also great.
so, any such helis out there? Thanks -Matt

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RE: "full sized" rc helis? - 6/25/2006 9:18:56 PM   
jez33


 

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Joined: 1/30/2006
From: kent, UNITED KINGDOM
Status: offline 		to your question ,,yes there are a few rc electric helis,,,i know that you can get raptors in the 50 size for a start as electric and im very sure bigger is no problem too !

Im afraid i dont see electrics so highly as you...i have both a plane and couple electric helis but i prefer the glo ones any day...but each to there own...

< Message edited by jez33 -- 6/25/2006 9:20:17 PM >

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RE: "full sized" rc helis? - 6/25/2006 10:04:39 PM   
credence


 

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From: Brampton, ON, CANADA
Status: offline 		Yes, theres quite a few big electric helis. In most cases, they're more powerful than their nitro counterparts over a broader powerband thanks to brushless and lithium power.

You can get them from .30 up to .90 size and even beyond (i.e, big gasser size).

Really, just about anything can be converted to electric power assuming you got the funds to do so. Theres brushless motors available for model use that generate up to 5 hp, that's alot of power!

Of course, with great power, comes great price.. . Big and electric in the same sentence usually means money, lots of money.

.50 size and over you're looking at roughly $2000 to $2500 for an electric with a "decent" (i.e, not great or powerhouse) setup. Align's new T-rex 600 may be the exception to this rule in pricing as they're advertising the whole kit plus motor and ESC for $500, but we'll see.

.90 size and up you're in the $3000 range and higher.

The most economical "big" electrics at the moment are the .30 size ones (Mikado Logo 10, Century Swift 16, Ikarus Eco-8 Royal, etc.) Anything bigger and it'll cost you a pretty penny compared to what you could get for the same money if you went nitro.

There's also conversion kits available for alot of the popular nitro helicopters (Raptors, Shuttles, etc.)

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RE: "full sized" rc helis? - 6/25/2006 10:06:15 PM   
superhornet59


 

Posts: 91
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From: Mississauga, ON, CANADA
Status: offline 		lol. naw, i love glow (its not the same without the scent and the sound...) but there are times (like when practicing in in my suburban neighbourhood) that i dont want to make a great big scene and realy want some of those qualities. see im getting a Caliber 30 soon, and rather than getting a new copter i thought it would be cool if i could get like a realy big electric motor, swap the gass tank with batteries and throw an ESC on somewhere, and it could fly. thatd be pretty cool...

especialy cause i want to put a camera on it and use it as a recon platform. with adequate practice, ya i could fly around my neighbourhood with a camera, but with a glow engine it would be ridiculous, hence the electric...

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RE: "full sized" rc helis? - 6/25/2006 11:50:58 PM   
credence


 

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Status: offline 		One more thing to consider, big electric helicopters really aren't that much "less noisy" than nitro models. The motors and gears produce a loud whine similar to a turbine (though not nearly as loud). The rotorwash is also very noisy.

The noise isn't as annoying as the weed-eater sound of a nitro engine, but they still aren't quiet by any stretch of the imagination. Just a different kind (less annoying) sort of noise.

See this video of the T-rex 600 flown by alan szabo to get an idea on what I mean.
http://www.skyloo.net/deetee/TREX6000417D.wmv

Here's one of a Joker 2.
http://www.e-helis.com/FXA_Joker2.wmv

When it comes to helicopters, electric and turbine power are hard to beat in terms of "true to life" sound, you just need a pocket book to support it! I've always thought scale models with that blue stream of smoke and annoying nitro sound always ruined the effect.

< Message edited by credence -- 6/25/2006 11:58:34 PM >

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RE: "full sized" rc helis? - 6/26/2006 12:55:41 AM   
superhornet59


 

Posts: 91
Joined: 1/9/2005
From: Mississauga, ON, CANADA
Status: offline 		ah crap. ill have to watch it another time, my computer recently got formated, i don't have the driver CD for my sound card so i cant hear anything on my computer. oh well, thats why my friends have computers too :P. so, are there any really quite rc helis out there? id be pretty interested in like a stealth heli (put a wireless camera on it, and sorta pop up from fences apache style... :P.

i think Ive heard something about direct drive rotors. i know they have them for tails, but they don't have them for main rotors do they? eliminating the gears takes off a bit of sound, and having a high torque, really low rpm helicopter would do the job much better (IMHO) than i high speed lower torque motor (1 its quieter, 2 its less moving parts which means less friction and less noise). but that doesn't exist does it?

EDIT: and as far as getting better sound goes, ya turbines are the most realistic, im taking your word for it that so are electrics, but a 4 stroke engine on a heli sounds plenty better than a 2 stroke because they operate on a lower rpm, (like comparing a harley to a MotoGP bike, its the difference in rpm mostly that gives the different sound). now of course that depends what heli your flyin lol. if your flying... say a scale R-22, which uses a conventional engine, youd want a 4-stroke in it...
just m 2 cents -Matt

< Message edited by superhornet59 -- 6/26/2006 12:59:53 AM >

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RE: "full sized" rc helis? - 6/26/2006 3:07:50 AM   
credence


 

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Status: offline 		Yeah, a 4-stroke would sound great if you were flying an R22 or similar civilian helicopter model, sounds silly in a jetranger or 222 though .

Personally, when it comes to planes, I think nitro is just way cooler. Seeing a 4 stroke warbird scream by is just awesome. I've never quite cared for nitro in heli's though.

4 strokes aren't really suitable for heli use as I understand it though if any sort of power is what you're after anyways.

As for a direct drive rotorhead, I don't think there is any motor (in our size limits) that would ever have enough power to spin the blades with pitch applied. Don't forget the motor has to fit the chassis, and the power you'd need to spin blades like that (assuming you could find it in a low enough RPM range without gear reduction) would be quite large.

I'm fairly certain it wouldn't be possible, and if you did somehow manage to do it, it would probably fly like crap because the motor would bog down as you increased pitch since there wouldn't be enough built up speed (on the motors end) to sustain the RPM.

At anyrate, even assuming it did work, you'd still have rotorwash to deal with, and when it comes to helicopters, 60% of all the noise is main rotorwash and the whine of the tail rotor.

< Message edited by credence -- 6/26/2006 3:09:24 AM >

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RE: "full sized" rc helis? - 6/26/2006 12:18:42 PM   
Karyn


 

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Joined: 4/13/2006
From: Lincoln, UNITED KINGDOM
Status: offline 		It sounds to me like you want a Trex 450SE.

They're bigger than the "toy" micro helis, (I know I'm gonna get flamed for that remark ) though smaller than a .30 nitro. They will fly outside with no difficulty. They are hard to break because of all the ali parts, but you'll still bend main shafts and feathering shafts. They will carry small cameras with ease (Mine carries one regularly). You can fly in your back yard. They are quiet, almost sounds like a turbine whine...

Karyn.

< Message edited by Karyn -- 6/26/2006 12:19:45 PM >

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RE: "full sized" rc helis? - 6/28/2006 3:15:38 PM   
Sao


 

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Joined: 10/21/2003
From: RCHelispot, UNITED KINGDOM
Status: offline
quote:

As for a direct drive rotorhead, I don't think there is any motor (in our size limits) that would ever have enough power to spin the blades with pitch applied. Don't forget the motor has to fit the chassis, and the power you'd need to spin blades like that (assuming you could find it in a low enough RPM range without gear reduction) would be quite large.


Actually I am pretty sure someone built a HUGE outrunner motor to do just that, thread was over on RCG if memory serves me correct.


If you want a larger e-heli for outdoor flying and want to keep the costs down then look into the Century swift, I'd still class the T-rex as a mini heli and not as suitable for outdoor in wind flying as the Swift would be.


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RE: "full sized" rc helis? - 7/1/2006 1:13:22 AM   
superhornet59


 

Posts: 91
Joined: 1/9/2005
From: Mississauga, ON, CANADA
Status: offline 		hmmmm

that Swift copter... does i tget good performance? if so i think with a homemade mount it could work on a caliber 30... right?

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RE: "full sized" rc helis? - 7/1/2006 2:35:38 PM   
lawnhawk



Posts: 198
Joined: 11/28/2003
From: McHenry, IL, USA
Status: offline 		Boy does it have good performance... take a look.

http://www.centuryhelimedia.com/videos/products/CN1040/adamTurnerC3D.zip

It's a ZIP file and it's kinda big so right-click it and use Save As...

< Message edited by lawnhawk -- 7/1/2006 2:38:54 PM >

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RE: "full sized" rc helis? - 7/2/2006 2:59:09 AM   
rjm1982



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Joined: 2/9/2005
From: Chesapeake, VA, USA
Status: offline 		4 strokes are ok for helies if you can ger ahold of the right gears and dont do 3d....even though the 4 stroke has lower rpms, its higher torque so it can turn a shorter gear...

Dont forget gas...they can be expensive...but not much more than an electric like a joker...

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