Demon question

How do you think Riley Wooten's Demon would do for sport flying with a 19? The wing area seems ok to me and it shouldn't be too heavy? I don't want 115 MPH with a hot 35, just something cheap and easy and fun and slow enough for an old guy.

PS, Tom Perry check your hotmail.

A local flyer built one from a current kit(I think from CA or HI)and powered with an LA 25. Using a heat formed clunk tank between the very narrow spars. I am going to guess speed at around 75 with a 9-4 APC running in a wet two cycle so it is pretty quick. As the Demon has a rather thin, diamond airfoil it does not turn too well but is easy to build flat.
If I were doing it, and assuming you had the plans only. I would take it out adding rib bays using the full 36" of your balsa sticks for more area. This would give you a total span of about 42"
(BTW, this is the way Riley built his own Sneekers(full span), but shortened the kit version by 6" to fit boxes or some such reason)
As to the 19 power, it would depend on the 19 of course. A Veco should do OK.
I built a similar diamond airfoil ship from scratch a few years ago to model the former Fury kit which is same wing but with small fuselage. I got a uniflow tank between the spars and blended it in with the sheeting and results were much better than the above described clunk set up. Power was an FP 25. It was quick, say about the same 75 mph with the 9-4, sorta fun in a way but a real dog in turning ability. Pic attached. Note there is no way to use a muffler or the muffler pressue the FP25 craves without using a huge, ugly skid.
Jim

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Attachment #1, (jpg file)

Problem will be weight of engine. Even a Fox.35 is to lite. If you balance it the Fox .35 will give you bang for buck and fly slow enough to enjoy.
Dan

That should be a good fit. But you might want to put a muffler on it for balance.
I'm flying a Voodoo, Fox 25 crossport, muffler and a single wheel. I also use muffler pressure because combat planes can manuver so fast they sag out on suction fuel draw.
Happy Landings

>How do you think Riley Wooten's Demon would do for sport
>flying with a 19? The wing area seems ok to me and it
>shouldn't be too heavy? I don't want 115 MPH with a hot 35,
>just something cheap and easy and fun and slow enough for an
>old guy.
>
>PS, Tom Perry check your hotmail.

Hi Russell, It depends upon what you mean by sport flying; if your expectations
are very low, then the Demon if just fine. If you want better performance,
then follow Jim P's suggestion and build a Sneaker. The
Sneaker is a very good flying model, much better than a Voodoo fer instance,
and the Sneaker will fly very well with light engines. I know Steve
Hills once told me: they(Texans) flew the devil out of them using .15s.
You win either way regarding your choice. One of my sons
flew a Voodoo using a Fox .15BB in FAI Combat, it was a nice combo even
though the Voodoo was a bit deficit in wing area.
Tony G

Know a good place to get Sneeker plans?

http://www.controllineplans.com/index.htm

Barry Baxter's plans service...seems like a good dude. The one I'd pick, tho, would be Ziroli's P-38 Combat. There's a Zero to go with it...you could fly combat against yourself! IMO, real combat models don't fly well slowly, PLUS, you'll need to adjust the leadouts forward to match the slower speed and (maybe) smaller lines. Steve

Steve Helmick
Renton, Washington
USA

Good point about flying stuff out of its design limits. Thanks.

Russell,
The Demon will be an excellent sport plane with a PAW .19.
Don't worry about the size, if anything it's too small. You might want to extend the root airfoil all the way out to the tip and dispense with the diamond section. Diamond airfoils are not particularly good. They stall quite easily and don't allow a very tight turn

One of my favorite setups is the PAW in a Flite Streak. It flies identical to a Fox .35 stunt powered one. I have flown YAK-9s and Circus KIngs with the PAW. I have flown Manx Cats, Melamijs,and Quickers with them. The PAW is a wonderful sport and stunt motor. TH e PAW is capable of pulling anything up to about 470 sq.in if the model is kept light. A friend of mine has one in an All American, Sr and looks like it should work well but is, at this point, untested.
Build it, you will love it, and a suction tank is more than adequate.
Bare

The Demon is doggy at slow speeds, but with a good 36X or G21-35, I have seen them fly very well. They fly better the faster they go.

As a trainer with a 19 it would be pretty docile.

It is easy to build.