Sig Mustang Stunter

Stuka Stunt Main Forum · 19 of 19 known posts recovered

jacobite · Jul 10, 2000 08:49 AM

I have just bought this kit.I have a question.
I have 2 engines which I think will work well in it.
A NIB K&B40 and a Super tigre C35 ( the stunt version )
I had a Sig Mustang 20 yrs ago with the ST engine and liked it, but I like the K&B40 also, any ideas ??
Also I'm thinking of modifying it for a Sidewinder engine mount, Has any-one tried this ?
I know not every-one likes the kit, but I do, so please no sniping........
Dave Moffitt

Currell · Jul 10, 2000 08:55 AM

#1 source

Go with the .40. And try to reduce weight in this kit whenever the opportunity arises, because it builds heavy. It has a lot of molded parts. Currell

The Kiwi · Jul 10, 2000 09:18 AM

#2 source

>Go with the .40. And try to reduce weight in this
>kit whenever the opportunity arises, because it builds
>heavy. It has a lot of molded parts.
>Currell

I have one that someone else built; haven't determined for certain what engine the builder intended to use. Without an engine, it weighs about 45 ounces already. That would make it 51 with an original type Fox 35. Anyone interested in buying a lead barge like that? (Not sure that with packing & postage it would be economical to ship it!)

Kiwi

Currell · Jul 10, 2000 11:43 AM

#5 source

K: It's going to cost about $55 to ship it. That's because the girth and height of the package is going to exceed 108", making it an oversize package. The USPO and UPS price will be about the same, I think. (I just sent out a model through an official UPS outlet, although it wasn't the ring tail UPS facility itself, so maybe I got a high price. At any rate, the price was within $1 of the PO.

Tell me some more about the plane. Is it finished? Painted? How much do you want, before shipping?

Currell

The Kiwi · Dec 10, 2000 11:50 AM

RE: Sig Mustang "Molded" wing? #16 source

LAST EDITED ON Dec-10-00 AT 11:51 AM (EST)

This thread was chosen because of a comment somewhere about the Mustang wing having been "molded." I sent a back-channel query to try to confirm, never heard back again. I'd like to know; I would swear it was cut like everyone else's foam wings. THEN I saw Currell's message again.

I thought that I took this reply back channel, but it seems not. Currell, I didn't ignore you, I just "remembered" doing something that never happened! You can have it for $35, so with the $55 shipping it comes to $80.

>K: It's going to cost about $55 to ship it. That's
>because the girth and height of the package is going
>to exceed 108", making it an oversize package. The
>USPO and UPS price will be about the same, I think.
>
>Tell me some more about the plane. Is it finished? Painted?
>How much do you want, before shipping?
>
>Currell

It's finished, has wheels, everything. But I did try several engines to see which one it was built for (no evidence that it was ever flown, either), without success.

Kiwi

LNeumann · Dec 10, 2000 06:11 PM

RE: Sig Mustang "Molded" wing? #17 source

The Mustang wings were hand cut at SIG with a cutting bow. Nothing fancy. They punched two holes for the leadouts. We made a set of templates and cored the wing like "normal", which not only make it lighter, but gave room for the leadouts to move (and then put an adjustable guide on as well.)

Leonard Neumann

Currell · Jul 10, 2000 11:44 AM

#6 source

Tell me some more about the plane. Is it finished? Painted? How much do you want, before shipping?

Currell

jacobite · Jul 10, 2000 09:29 AM

#3 source

I think you are right Currell
I like the look of the K&B40.
What prop ? start with 10x6, try 11x5 after running-in ?
As to weight, are the plastic bits that much heavier than the equivalent balsa bits ?
Certainly the foam wing will be heavier than a balsa wing, but so much easier to make accurately.
Most of the wood seems to be very good and light, I will put the heavier ( and there some ) wing-skins on the outboard wing.
Dave Moffitt

Jim T. · Jul 10, 2000 10:32 AM

#4 source

I'm a K&B 40 partisan; however, if it is the new ABC engine i've seen two that had chips and burrs where they shouldn't. If it were mine, I'd take it apart and inspect it thoroughly before running. If you have the older 4011, just go fly. The ABC does a nice 4-2-4; a stock 4011 is a one-speed engine. 11 x 5 prop is what you need, probably. Jim Lee has a number of modifications of the Sig Mustang that make it an excellent airplane. His address is in the PAMPA manual.

Jim

Dave Moffitt · Jul 11, 2000 07:58 AM

#7 source

Jim,
mine is the newer ABC motor, it feels very good to turn over, I have not run it yet, I don't think it has been run.
I will strip it down as you suggest, what should I look for ?

Dave Moffitt

"today is the tomorrow we weren't going to worry about yesterday"

Jim T. · Jul 11, 2000 10:22 AM

#8 source

The two things I have seen were a burr inside the spraybar and a brass chip between the top of the cylinder liner and the head. Removal of these benefited the engines greatly. I'd just look for anything that shouldn't be there.

Jim

FKrueger · Jul 11, 2000 03:57 PM

#9 source

I agree with Jim T. Jim Lee's Mustang mods are the way to go. I built a Sig Mustang with Jim/Todd Lee's mods and finished it last year. There is almost no kit wood in it, and I replaced all the plastic parts with balsa. After I built the wing (with good sheeting wood), I cored it with a homemade cutting bow. It was still heavy, so I sold the wing and made a built-up version (much lighter) My completed Mustang weighs 40 oz. with Fox35ABC or DS40 in the front end. Jim Lee saw it fly at Sig this year and thought it flew quite well (within my limits!).
The stock Sig Mustang has only 488 sq.in. of wing, so it must be built extremely light to fly well. Unfortunately, this means almost scratch building a kit!

If you want a list of Jim/Todd's mods, I can send them to you. Just e-mail me.

Fred

jacobite · Jul 12, 2000 07:25 AM

#10 source

One of the things I like about the kit is that you can scratch-build another from the plans very easily, i have built several and some home-designed planes using their method of making fuselage " formers "
Also, the best-flying ( but worst-looking ) plane I ever had used the original Mustang wing, from a crash repair, and a Mercury Crusader tail, looked much too large for the wing.
However I put them into a profile fuselage and it flew a treat.
Should I try it again ??????? perhaps not......

Dave Moffitt

fernando torres · Jul 22, 2000 06:57 PM

#11 source

I am trying to find some good mustang plans. can you recommend some?

The Kiwi · Jul 22, 2000 10:35 PM

Mustang plans#12 source

Fernando, if you don't mind, how about pinning down what you mean by good plans? Tell us how big a plane, approximately, or at least how big of an engine?

Kiwi

jacobite · Jul 24, 2000 07:28 AM

RE: Mustang plans#13 source

Kiwi is right, there are lots of plans for Mustang Stunters, look for the Mustunt series by Al Rabe, some very good looking, easily built and easy to trim planes there.
Or try to find a plan of the Sig Mustang.

Dave Moffitt

Steve Helmick · Sep 18, 2000 09:11 PM

RE: Mustang plans#15 source

I also agree with Kiwi. There are lots of Mustangs, some are very close to scale, and some are not, so it depends on what you
want and how serious you are going to get. You can buy a Brodak
profile P-51, the Sig P-51 Stunter, and RSM has a P-51 that is
a notch above those. Then there's the Rabe Mustang, tho I belive
the last article was done by another modeler, based on the Rabe
design. However, the Brodak and Sig kits will be pretty neat for
the average sport flier, and by the way, I think the Sig kit may best be used for demonstration flying. It happens that I have one
(paid about $17 at the hobby shop), and it would be pretty neat with a light .40 (Tower) with throttle and retracts (Robart 1/2a)
all operated off a free flight timer. Even at 50 oz, this would be a pretty flashy piece at about 80 mph with the weels up! It
WOULD get some attention from the spectators. Steve

Bob Martinez · Sep 17, 2000 05:57 AM

#14 source

>If you want a list of
>Jim/Todd's mods, I can send
>them to you. Just
>e-mail me.
>
>Fred

Hi Fred:
Can you E-Mail me this list.
I he
ave this kit also and will build it sonn.
Thanks
BobM

FKrueger · Dec 19, 2000 01:58 PM

#18 source

Bob,

I can't seem to get your e-mail address. E-mail me at [email protected] and I'll send you the mods as a MS Word document plus a couple of JPEGs. If you can't read MS Word, let me know what will work for you.

Fred