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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › Evolution petrol engines
10-10-2017 10:23 AM  10 months agoPost 1
IYKIST

rrKey Veteran

London united kingdom

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Has any one tried using these engines in a helicopter and what was your experience.
http://www.evolutionengines.com/Pro...ProdID=EVOE10GX

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10-10-2017 01:37 PM  10 months agoPost 2
Eury

rrProfessor

Dover NH

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I had that engine in a plane. It was garbage. Didn’t run particularly well, didn’t make as much power as a glow of the same size, and needed 20:1 oil mix so the plane ended up with just as much oil covering it as with a glow powered engine. I ended up giving the plane to a guy at the field with the engine, he seized it when he didn’t listen to the manual and ran it at 50:1.

Nick Crego

Citizen #0168

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10-11-2017 02:51 PM  10 months agoPost 3
RM3

rrElite Veteran

Killeen, Texas - USA

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Same here, two guys had them in their planes at the local field a while back... they never could get them to run right for very long. I tried to help, but tuning was difficult and it would not stay tuned... they also ran VERY hot by what I can remember.

STAY AWAY and definitely not for helicopter use.

showing a preference will only get you into trouble, 90% of everything is crap...

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10-15-2017 11:04 PM  10 months agoPost 4
jharkin

rrApprentice

Holliston, MA - USA

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Evolution engines are universally garbage even in planes... their gas and glow versions.

I never met anyone who owned one, any model, that anything positive to say.

Even if they ran like a top (which they dont), trying to make a plane engine work in a helicopter is problematic at best.

-Jeremy
Whiplash-G
Helix 700G
T-Rex 450 fbl conversion
alot of planks

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12-28-2017 10:23 AM  7 months agoPost 5
nivlek

rrProfessor

Norfolk England

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A club mate has one in a fixed wing model . It took a long while to run in , virtually a whole season (he was flying other models as well) , but once it was run in , it stopped kicking out loads of black crap from the exhaust and runs quite well now .

At the end of the day , it gets dark .

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12-28-2017 11:33 AM  7 months agoPost 6
PaulBowen

rrKey Veteran

Victoria, Australia.

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I’m always surprised when someone points out the obvious fact that a petrol engine produces less power than a glow of the same displacement and acts surprised by this.

The whole point of 2 stroke petrol engines in model helicopters is to provide longer flight time, lower running costs and also bigger helicopters when it came to Zenoahs as there wasn’t anything even close in displacement when it came to glow engines.

Petrol engines were never ever intended as replacements for glow in 3d flying.

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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12-29-2017 03:10 AM  7 months agoPost 7
Gearhead

rrMaster

Vt

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as there wasn’t anything even close in displacement when it came to glow engines.
there was,,

Super Tartan,, 22cc & 44cc Twin glows

Super Tiger,, 22cc & 30cc & 60cc Twin glows

Webra,,, 35cc Bully glow

Moki,,,, 25cc, 26cc & 30cc, 35cc, 60cc Inline Twin glow

OPS,,,,, 30cc glow

Zenoah,, 23cc glow

I think Maloney made a 25cc glow

there are more but I can't bring them to mind,

you can see the Super Tigers & Tartans here,
http://sceptreflight.net/Model%20En...ests/Index.html

Jim
Buzz Buzz Buzz

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12-29-2017 03:33 AM  7 months agoPost 8
PaulBowen

rrKey Veteran

Victoria, Australia.

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Specially for helicopter use Gearhead?

Tanaka
Zenoah

Please enlighten me more?

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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12-30-2017 03:28 AM  7 months agoPost 9
Gearhead

rrMaster

Vt

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Specially for helicopter use Gearhead?

Tanaka
Zenoah

Please enlighten me more?
well actually, Super Tartan did make a 22cc Heli engine back when MA realest their first Gas Heli, I do have the Tartan Flyer to prove it,

Engine F7G Code # 7.00.84

you said what you said and I pointed out the RC engines that were on the market at that time, the Tanaka and Zenoah were not made for Helis, to add, at that time there were other quality gas weedeater engines setup the same way the Zenoah and Tanaka was/is setup, Zenoah was simple the fist to be chosen,

to add, any Heli manufacturer could have made an engine mount for the engines I listed, but they didn't that I know of

Jim
Buzz Buzz Buzz

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12-30-2017 04:38 AM  7 months agoPost 10
PaulBowen

rrKey Veteran

Victoria, Australia.

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Ok gearhead

Not realy sure what point you’re trying to make. Petrol engines that lacked any mounting kit for any available helicopter, great.

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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12-30-2017 01:20 PM  7 months agoPost 11
JuanRodriguez

rrProfessor

The Villages, Florida

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PaulBowen
Ok gearhead

Not realy sure what point you’re trying to make. Petrol engines that lacked any mounting kit for any available helicopter, great.
Paul,
I’m sure he’s missed a dose or two of his meds.....

Been there, done that and old enough to know better.....

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12-30-2017 04:40 PM  7 months agoPost 12
mecha1000rrNovice - Mount Royal, NJ - My Posts: All  Forum  Topic

Evolution
Seriously considering buying a used 600N or 700N and installing a 10GX2 or 15GX, respectively. My plan is to use it in a scale flying application which i dont see a problem with....it should be a direct swap based on what i have researched.

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12-30-2017 05:47 PM  7 months agoPost 13
Eury

rrProfessor

Dover NH

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The problem you will have is with cooling and it will be exacerbated by the lower rpms the fan will be turning in a scale application.

Nick Crego

Citizen #0168

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12-30-2017 10:02 PM  7 months agoPost 14
mecha1000

rrNovice

Mount Royal, NJ

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evolution
The cooling obtained by using the nitro fan shroud is not sufficient i assume. i wondern if two inexpensive electric ducted fans would provide the additional cooling. I remember reading a post in which a guy used a turbine for cooling. Also another way will be to increase the total fins area which will provide additional cool. I am sure that someone already tried the increased fins area....

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12-30-2017 10:34 PM  7 months agoPost 15
JuanRodriguez

rrProfessor

The Villages, Florida

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mecha1000
i wondern if two expensive electric turbines would provide the additional cooling.
Wouldn't that defeat the whole purpose of going with a gasoline motor ?? Let alone the added weight and complexity.......

Been there, done that and old enough to know better.....

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12-30-2017 11:17 PM  7 months agoPost 16
mecha1000

rrNovice

Mount Royal, NJ

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sorry, meant to say inexpensive EDF. i have revised my original post :-)....

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12-31-2017 07:12 AM  7 months agoPost 17
Gearhead

rrMaster

Vt

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again,
you said> "as there wasn’t anything even close in displacement when it came to glow engines."

so I pointed out the glow engines that "where" close to the displacement of the G23 at that time

I guess you could not see that,, no biggie

Jim
Buzz Buzz Buzz

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01-01-2018 01:14 AM  7 months agoPost 18
RM3

rrElite Veteran

Killeen, Texas - USA

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I highly discourage the use of a gasoline engine in a scale application... gasoline engines run alot hotter and gasoline does not play well with alot of the paint jobs and adhesives often used... read somewhere that the scale models must also be cooled and vented as heat can build up inside the model and cause issues with electronics... I think this was something Raja and a few other noted with the whiplash?

the best scale models that has the right sound, least vibration issues and least overall problems have nearly always been electric...

to make things worse the tiny 10 or 15cc engines simply must be run hard to get even light weight 700s flying under sport styles... and scale helis are not known to be light to begin with... if you do go this route plan on the chassis being torn open to get to all parts of the engine... your gonna need it.

IMHO I would go electric if going scale... sounds better and no engine issues with vibs, fuel, exhaust...etc

showing a preference will only get you into trouble, 90% of everything is crap...

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01-05-2018 12:41 AM  7 months agoPost 19
mecha1000

rrNovice

Mount Royal, NJ

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What you are saying makes sense. i wonder how the vario gas helis last for so many years. Do they have an electric fan to cool the fuselage?

I already have an electric scale but think that it will be cool to have a gas one as well. i have been looking at water cooling radiators used for PCs to maybe adapt to the smaller engines or a larger Zenoah engine.

I guess just build it and keep it pod and boom style.

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01-05-2018 02:36 AM  7 months agoPost 20
Gearhead

rrMaster

Vt

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i have been looking at water cooling radiators used for PCs to maybe adapt to the smaller engines or a larger Zenoah engine.
if you look at the water cooled MVVS (see link) a RC plane engine (50cc I believe) you will see that it's radiator is rather large for a RC Heli, and you need more cooling for a Heli than a plane, even tho the Zenoah will be smaller in CC and you used 2 smaller radiators you still have to cool them and have intake vents and exhaust venting, a good pump and a very good thermostat

http://www.rcuniverse.com/forum/gas...ero-engine.html

Jim
Buzz Buzz Buzz

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