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Old Apr 17, 2007, 09:39 PM
Evandro And is offline
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DA 50-R on Great Planes 1/4 Extra 300S Wagstaff ARF 1.60-2.1,78"


I have just received my Great Planes 1/4 Extra 300S Wagstaff ARF 1.60-2.1,78". Now I have to define what engine I am gonna buy to power it. Per Great Planes spec its weight is 14-16 lb (6.35-7.26kg) and the recommended engine varies from 2.5-3.8 ci (41-65cc)(Gas).
I am to about to buy the DA 50-R. What are your feelings about it, since the end of recommended engine scale per great planes is 65cc.? Will it pull this airplane out of any hover? Per DA 50-R spec this engine is for a 14-18lb aircraft. I am afraid of not having enough power.

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Old Apr 17, 2007, 10:40 PM
Eury is offline
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Great engine, but not the engine for that plane. It's really too small for it, the wing loading comes out too high and the performance suffers. It's a much better plane for a large glow engine, the 50cc gassers are just too large, and the 40cc are just a bit too small. A DA 50 in that plane is a rocket, but if it's pointed anywhere but straight up, it doesn't fly well.
Old Apr 21, 2007, 02:16 AM
cadconversions is offline
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I had a buddy that had a Brisson 50cc in his and it was great but they are heavy compared to the other models on the market. I think the DA-50 would be find with throttlle control (more power than you need) but allow you to move up to a larger plane later.
Old Apr 22, 2007, 01:40 AM
Cap232ac is offline
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I've had a ZDZ-40 on mine. Great flying plane at 13.5 lbs. Plenty of power at my altitude 6400ft. 20X10 PowerPoint prop at 7200RPM.

*note* Simitar prop in photo was a dog!
Old Apr 22, 2007, 08:40 PM
~SnApRoLl is offline
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The DA would be a great engine for that plane. Just check the balance. It will pretty much have unlimited vertical. A fellow member at my club has the G.P. 78" Patty Extra with a DA50 and it is a sweet flying model. I have the AeroWorks QB Yak 50cc with a DA50 and it weighs about 17lbs and it flies absolutly perfect. It has powerful vertical performance and it's still breaking in and a little on the rich side. I would go with the DA.
Old May 15, 2007, 09:56 AM
wood is offline
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50 is good

I have a patty extra with the da, it is not a snap happy beast or anything. It is good set up in my opinion. It is my first gas set up and I am doing well with it. Mine cam out at 16 lbs even with one battery on servos and one receiver, no fancy stuff.


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