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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther News  New OS 15cc Gas engine
12-05-2012 02:32 AM  7 years ago
Justin Stuart (RIP)

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Plano, Texas

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It doesn't sound a noisy in that video. Maybe because the camera man is farther away.Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives
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12-05-2012 07:09 AM  7 years ago
brw0513

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Brisbane, Australia

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That engine and flight impressed me. But I know that won't be the case for everyone.

Perhaps lessons learned by OS here will translate in the future into a bigger engine that is equivalent to a 91 size nitro.

And perhaps a tuned pipe would be an easier proposition for this form factor.
Ian B
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12-05-2012 11:42 AM  7 years ago
radimani

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Japan

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Yes. At the RC fair in Tokyo in October, I talked with O.S. staffs and they said that it's not for everyone. The main target is for average pilots, for example, those whom want to enjoy the basic flight maneuver with low running expense. Not for expert 3D maneuver.
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12-05-2012 02:04 PM  7 years ago
fla heli boy

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cape coral, florida

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I'm thinking "figure out a way to mount it and run it in a Radikal 20".... yes, no?? Thinking size wise and weight savings, it should be a good match. Never had a bad OS motor.
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12-06-2012 07:17 PM  7 years ago
RM3

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Killeen, Texas - USA

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I'm thinking "figure out a way to mount it and run it in a Radikal 20".... yes, no?? Thinking size wise and weight savings, it should be a good match. Never had a bad OS motor.
I'm thinking there will be a CG issue...Given that this engine weighs much less, You may very well end up mounting all your electronics and battery up front to get a good CG.
showing a preference will only get you into trouble, 90% of everything is crap...
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12-08-2012 03:13 AM  7 years ago
Blanka

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lover city

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12-08-2012 06:52 AM  7 years ago
jeepjk

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Normal, IL

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looks kinda cool, im gonna get one just because and put it in my hirobo evo
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12-13-2012 05:00 AM  7 years ago
radimani

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Japan

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Hatori has been working on the exclusive muffler for this motor!
How does the muffler feel? The quality of the video is not good though..

Watch at YouTube

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12-13-2012 06:26 PM  7 years ago
RM3

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Killeen, Texas - USA

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How in the world is that the 15CC engine...video says 2009...and it sure sounds alot like a nitro too...showing a preference will only get you into trouble, 90% of everything is crap...
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12-13-2012 06:33 PM  7 years ago
Carey Shurley

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Orlando, FL - USA

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Hatori is in fact making a custom muffler for the GT15Proprietor - Gas Powered Helicopters
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12-14-2012 05:29 AM  7 years ago
radimani

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Japan

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As to the movie taken by Hatori, they attached the comment that the time stamp is wrong. If we open the movie separately by Youtube, we can find it. The setting of the video camera may be offset??
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12-31-2012 08:26 PM  7 years ago
Blanka

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lover city

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01-01-2013 04:16 AM  7 years ago
Ravenhyper50

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Canada's Capital

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Yes yes wicked yes!!!!!!!!!

Can't wait to try this out!!!....first time gas heli

going in this bad boy ...
Raven


Watch at YouTube

Already one of the lightest 90 class helis ever sold
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01-11-2013 04:23 AM  7 years ago
Zbawer

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Singapore

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I've got a YS91SR installed in my T600N at the moment, this offers amazing / electric-like performance, but only 6 min per tank.

I'm quite keen on swapping with this new GT15 gas engine, even though I'll be loosing a bit in power (still more than a 55 !) if I can get 5-6 times more flight time per tank I'd be thrilled !!

But I am afraid the dimensions of this GT15 won't make this an easy task, the heat sink head is massive and the carb also, that will need some serious modification of the fan shroud.

For those of you guys that would be interested in doing the same, remember you'll need a 24 teeth pinion, that you can get at Infinity Hobby, so as to maintain a head speed close to 2K.
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01-12-2013 04:14 PM  7 years ago
navyraptor

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CA, USA

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it up on the web site

http://www.osengines.com/engines/osmg1915/index.html

http://www3.towerhobbies.com/cgi-bi...CH=O.S.+GT15HZ+
Raptor G4N, Raptor E720, Raptor E700, Raptor 90SE, X50F, X50E, 14sg
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01-14-2013 09:01 PM  7 years ago
ninob660

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Layton UT.

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Seem to be proud of them, the price is as much as one of the modified 26cc motors. Whats that all about?
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01-15-2013 12:04 AM  7 years ago
Ravenhyper50

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Canada's Capital

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Seem to be proud of them, the price is as much as one of the modified 26cc motors. Whats that all about?
That price seems to be appropriate considering that's what any good .91 engine/pipe combo would go for... the only difference is this one runs on gas!

For me this is better value for the $$ compared to my OS 1.05

I can live with less power for pennies a flight!

opposed to $6.00 per flight with nitro

...I do hope to at least get .50 size like power with this gas Os engine installed in my Vision .90 DFC.

Raven
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01-15-2013 12:17 AM  7 years ago
Carey Shurley

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Orlando, FL - USA

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if you keep the blade size under 700mm, you can get more like .70/.80 type powerProprietor - Gas Powered Helicopters
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01-15-2013 12:45 AM  7 years ago
Ravenhyper50

rrKey Veteran

Canada's Capital

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Carey your saying .70/.80 type power ...

So would it fly like my Furry with the OS .55 in power or even better ?

If this OS GT-15 Gas motor has the power to weight of a well tuned OS .55 in a .50size machine but installed in a .90 vision FBL

I'm going to be very

Cheers,
Raven
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01-15-2013 01:01 AM  7 years ago
Carey Shurley

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Orlando, FL - USA

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you've seen the videos of it flying various 700 sized models. I'm not sure the right gearing has been found yet to maximize that setup. 8.2 was better than 7.9 but I couldn't easily get the model to a shorter ratio. Although with todays flying styles high head speed is desireable so there's a tradeoff point where it won't make sense.

There is work being done to shoe horn it into 600 class models. It of course will be heavier than a typical 600 but should be interesting! On the smaller model it won't be a straight bolt in, it needs the 700 cooling system, clutch, etc.
Proprietor - Gas Powered Helicopters
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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther News  New OS 15cc Gas engine
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