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HelicopterScale Model RC Helicopters › Scale looks vs practicality?
01-13-2011 04:51 AM  7 years agoPost 1
helifan314

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Wheaton, IL

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Hello scale heli pilots:

I've got a couple of questions regarding scale for scale's sake and scale contests.

I've just started getting into helicopters after decades flying control line scale. I started small with a coaxial and am working my way through realflight 5.5. My hobby shop and the fliers there are recommending I get a T-rex 600 for it's larger size and stability. I'm fine with that, but I noticed the scale fuselage I'd eventually like to get doesn't come in a 600 size (EC-135). There's lots of them for 450 sized models and a few for the 800 sized and larger. I can scratch build and have done my own fiberglass molds. Any idea how makes a really nice EC-135 kit that would fit T-rex 600 mechanics?

Here's my second big question, and it has to do with scale outline as well as scratch building. I've seen some pilots flying the EC-135 with regular T-rex tail rotor mechanics instead of the fenestron.

Is this cheat ok to do in scale competition? Are folks at a scale contest dinged in outline for that?

The reason I ask is that another project that has always interested me is the Fairey Rotodyne. How much can one deviate from the looks before the project is considered odd or 'wrong'? If I fabbed up a scale fuselage for a rotodyne and buried T-rex mechanics inside, except for a tail rotor that stuck outside (like those EC-135's I saw) would it be downgraded for not being scale?

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01-13-2011 07:35 AM  7 years agoPost 2
Spitfire1

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Perth Australia

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I wonder if it would be possible to use an electric ducted fan out of a jet in the place of a tail rotor connected to a gyro for fenestron, something like them fixed pitch helis with the electric motor instead of a belt.

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01-13-2011 08:32 AM  7 years agoPost 3
alvinrc

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Mobile, AL, USA

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For scale competition, as in RC and Control Line Scale, the nearest to complete scale detail, the better you will do.

I have seen some pictures of scale RC helicopters that are very very scale and are gorgeous.

Otherwise, make it as scale as satisfies you and enjoy flying it.

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01-13-2011 12:08 PM  7 years agoPost 4
Peter Wales

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Orlando Fl

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If you want to compete with your helicopter, you have to provide the judges with photographs of the full size that you are modeling. The less accurate your model is to the full size, the fewer marks you will get.

Having said that, the static score is 350 points and the tail rotor is only 10 of them.

Peter Wales
http://scalehelicopters.org

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01-13-2011 12:21 PM  7 years agoPost 5
iHover

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Berne , NY

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TF Models just developed a feston for there Blue Thunder fuse. It works with Trex 600 mechanics. Right now they are packaging it with the Blue Thunder but I would imagine that they will sell it stand alone and or develop other fuses that use it.

You had me at Hover

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01-13-2011 01:07 PM  7 years agoPost 6
dkshema

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Cedar Rapids, IA

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Take a look at Vario, they have an EC-135, mechanics for it, and a fenestron as well.

Ain't cheap, but then, it's really nice way to go.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-13-2011 03:47 PM  7 years agoPost 7
helifan314

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Wheaton, IL

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Thanks for the info, guys. After some more digging, it seems like you have to pick the mechanics set up for the available fuselages out there. Either that, or scratch build something for the mechanics you buy. Vario's EC-135 does look really nice.

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01-14-2011 12:33 AM  7 years agoPost 8
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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when picking a scale fuselage to build, you really need to first decide or find out which helicopter fits it best. not all helis fit well in some fuses. some do better than others and your best bet is to pop over to the scale section and ask those who have been there and done that
the vario fuses are very nice quality but not cheap. vario however has a set of mechs made especially for every fuse they have and take much of the guess work out of well, everything! they also have what may be the largest selection of scale helis. the ec135 they have is not one i believe will fit your trex 600, its a huge fuse.
i have a 60 size ec 135 from vario (no longer made) that may be a bit better for the trex and hirobo also has a 60/90 size ec135 (same size as the vario 60 size i have) but i have never seen the fusleage available without the mechs and if it was, you probably wouldnt want to pay what hirobo would ask
you can get the hirobo fenny unit alone but again they are quite proud of it
vario's fenny is also available separately.

drive a rotary, fly a rotorcraft

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01-14-2011 04:05 AM  7 years agoPost 9
helifan314

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Wheaton, IL

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Thanks, Doc. These past few weeks have definitely been a learning curve for me. The Hirobo EC-135 looks great. I wasn't sure if the price included mechanics or if that was an all inclusive price. Seems like a complete package, and if that's the case, great. I've read high praise in the forum from those who own them. As for learning on the real deal, should I still opt for a Trex copter and fly that, then move to a Hirobo, or can I fly the Hirobo in pod and boom mode and save $$$?

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01-14-2011 09:36 PM  7 years agoPost 10
Mojave

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Palos Verdes, Ca. USA

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You're still going to want to fly the hirobo in pod-n-boom config to work the bugs out before you put it in the fuse. If those mechanics are available in pod/boom. I have never built the hirobo, so I can't say.

There really is no saving money in this hobby, it's the money "BLACK HOLE". But, if you buy and fly the rex600 prior to buying the hirobo scale, you will have the advantage of relatively affordable repair parts and great parts availability. Trex600 parts are abundant. Plan to crash, it's inevitable when you are learning to fly helis.

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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01-14-2011 09:43 PM  7 years agoPost 11
Peter Wales

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Orlando Fl

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You cant fly the Hirobo in pod and boom form as it doesn't have one. The kit comes with the mechanics, which is a big square box, the drive shaft and a fenestron. You build it in the fuse and fly it. No tailboom or mount, supports or landing gear.

Learn to fly a Trex and get comfy with that then go into scale.

Peter Wales
http://scalehelicopters.org

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01-14-2011 09:49 PM  7 years agoPost 12
Frank Bostwick

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Cincinnati Ohio

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Where can you find the rules for scale competition?

RIP ROMAN

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01-14-2011 10:09 PM  7 years agoPost 13
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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Mojave, Peter summed it up. those mechs for the hirobo scale ships arent a pod n boom machine used in a fuse, they arepurposely built for the fuse with no way of mounting a boom to support the tail. a technique i am not crazy about but their reputation seems very good for first flights in the fuse.
scale rules are on the ama website.

drive a rotary, fly a rotorcraft

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01-15-2011 03:54 AM  7 years agoPost 14
Mojave

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Palos Verdes, Ca. USA

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Yeah, that's why I told him I wasn't familiar with those mechanics. He really should get a bunch of stick time on a pod/boom, then ad some dead weight to the airframe to simulate the scale weight for practice flying, then move into scale. That's my humble opinion and .002

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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01-15-2011 06:18 AM  7 years agoPost 15
helifan314

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Wheaton, IL

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All very good info, guys...thanks for the tips. I'll start planning for the Hirobo and go with the Rex for a practice ship. As you folks stated, 'tis no cheap hobby. But then, are there really any that are cheap?

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01-15-2011 07:35 AM  7 years agoPost 16
reaper31

rrVeteran

Littleton, CO, usa

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the trex will fit in numerous fuselages as well, you will be able to put your trainer heli into a nice fuselage as well. while you prepare for a project like the EC-135. that way you will end up with two scale helis

Robbert De Bock

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01-15-2011 07:53 AM  7 years agoPost 17
helifan314

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Wheaton, IL

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That's true, reaper31. I revisited RC Aerodyne and found a very nice looking Augusta 109. I'll probably pick up one after hearing the great reviews on the forum from a good number of fliers. Price is good and there's even a retract kit for it.

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01-16-2011 03:39 AM  7 years agoPost 18
DCORSAIR

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Selma, Calif.

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My opinion
Just my thought, you could always pick up a set of used Hirobo Evo mechanics for cheap now days and a OS hyper for cheap, drop it in a scale fuse after you fly it in pod and boom. You don't need fancy servos or gyros for scale. No flame please, just my opinion.

Hirobo SDX in the Ecureuil, Hirobo Evo in the 109.

D. Lee.....t.Born again.t.....

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