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Engines for Hangar 9 Twin Otter

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Old 07-15-2012, 11:49 AM
  #26
korvette
 
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Default RE: Engines for Hangar 9 Twin Otter

Of course is electric power easy, clean and fast to start...but there is one dimension missing...and that is sound.
The kit is disigned for .25-.40 2 stroke engine's and that gives good sound...but 2 four strokes are sounding even better.
We fly from grass, so the .25 engines are on the small site..so there should be .40 2 stroke engines...and when you want the same power, the 4 strokes have to be at least .10 bigger.
So the saito .50 should give the same power as the .40 2 strokes only with a far better sound.

Because the Saito engines have the carb. on the back the engine islonger than the 2 stroke and the nacelles would not fit...so we have to make some changes.
The saito .50, .56 , .62 .72 and even the .82 have the same lenght...so for al those engines these changes wil work.

Take a look at the pictures how I made the changes....it looks great...the .62 saito fits great inside the nacelles. I made a short exhaust manifold so the mufflers stays very close to the nacelle. it looks great....sounds great, and because there is enough power I can fly with only half throttle.
I made today a flight of 10 minutes, and the original 200 cc tanks were only half empty...so I can fly at least 15 minutes.

So with a minor work those saito 4 strokes fits perfect.

Good luck,

Kor

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Old 07-15-2012, 11:53 AM
  #27
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Default RE: Engines for Hangar 9 Twin Otter

and a few more pictures

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Old 09-03-2012, 05:07 PM
  #28
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Default RE: Engines for Hangar 9 Twin Otter

I have 2satio 56 fourstroks on mine & flies great
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Old 09-06-2012, 08:42 AM
  #29
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Default RE: Engines for Hangar 9 Twin Otter


Quote:
ORIGINAL: korvette

Of course is electric power easy, clean and fast to start...but there is one dimension missing...and that is sound.
The kit is disigned for .25-.40 2 stroke engine's and that gives good sound...but 2 four strokes are sounding even better.
...................................Kor

I have to disagree...when the Twin Otter from H9 is powered by electric, it has a great scale turboprop sound to it....far more representative of a real Twin Otter than any 2 stroke or 4 stroke powered Twin Otter.

Other scale twins (that are not turboprop in full scle) do sound good when powered by gas and glow engines, but if you want a realistic sound from a scale model of a turboprop, it is hard to beat electric.
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Old 09-21-2014, 06:54 PM
  #30
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I have E-Flite power 32 BL using 4S batteries and 13 x 8 APCE props, works great. This is an upgrade from the EFLITE power 25 BL motors.

Empty weight - 11 lbs, 4 ounces, add 2 lbs for the 2 4S LIPO batteries.

Last edited by trumpet20; 09-27-2014 at 06:24 PM.
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Old 09-26-2014, 09:24 AM
  #31
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What are your Twin Otters coming in at for weight, with which engine choice?
Im scratch building a twotter that is the same size as the H9 (model builder plans, but a fiberglass fuse from an old unknown kit). Im leaning toward electric, but would love to use a pair of FG-11,s or FG-14's. But I fear they will be waaay to heavy! I figure 16# would be the most this plane ought to weigh......
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Old 09-26-2014, 02:28 PM
  #32
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Quote:
Originally Posted by Thunder Chicken View Post
What are your Twin Otters coming in at for weight, with which engine choice?
Im scratch building a twotter that is the same size as the H9 (model builder plans, but a fiberglass fuse from an old unknown kit). Im leaning toward electric, but would love to use a pair of FG-11,s or FG-14's. But I fear they will be waaay to heavy! I figure 16# would be the most this plane ought to weigh......
I had mine for about a year and have flown it quite a bit. It is on 32 size electric, 4 cell 4000mah, 12x6 props, flys perfect, flpas aren't really needed but have them anyway. Not sure on weight, not overly heavy, will get exact weight tromorrow but I would guess 12 lbs RTF wit batteries. I have a lot of glow planes, but this plane is really perfect for the electric setup, even sounds like a turbine when coming on power. Great flying plane, and fairly manueverable.
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