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Old Oct 22, 2013, 10:49 PM
JStory is offline
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United States, TX, Dallas
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Seagull YAK 54 ARF 90 Conversion

Any suggestions on a power plant for this guy?

Seagull YAK 54 ARF 90
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Old Oct 23, 2013, 06:48 AM
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Oakland township, Michigan
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Hi -

We have two of these at our club and they are a little heavy for their size. In one instance, the plane is powered by a glow engine (no sure the size) and the other by a small gas engine, either a DLE 20 or a 15 cc Evolution. The later one turned out to be quite heavy and not a very good flyer. If you have not purchased the plane yet, there might be more suitable alternatives out there.

If you have, I think that the conversion would be doable with an E-Flite power 60 and a 6S battery. Not sure on the prop, but something in the 16x10 to 17x10 range should work. For a little more power, an E-Flite power 90 would also work although you may have to go to a higher voltage battery (maybe 8S).

Also, the plane require two separate elevator servos. In order to save a little weight, you could switch those for mini's since they are moving relatively small surfaces. You can also opt to use a ligthweight spinner and lighter wheels in order to save a little more weight.

Good luck,

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Last edited by viva_peru; Oct 23, 2013 at 06:53 AM.
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Old Oct 23, 2013, 02:48 PM
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Canada, ON, Owen Sound
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I'd likely run a Scorpion 4020-14 with a 14/8 or 15/8 apce prop on 6S/4000/30c or so. This motor will run at 1400-1500watts all day with bursts to 2000w for 10sec.
Another choice might be at HK, the Sk3 series 5055-420 with 15/8-10 on 6s.
fwiw Doug B
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