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General control line discussion => Open Forum => Topic started by: Richard Fleming on August 14, 2023, 01:31:45 PM
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I was given a modified Banshee that looks like a Ryan ST. The previous builder did a good job changing the out line of the fuse and tail. The engine spacing is for a Fox .35 stunt. He glued on the flaps but look rather short. I don't have the plans and was needing the measurement from the end of nose to front of L.E. also what is the width of the flaps next to the fuselage? I plan on adding working flaps again.Thanks!
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If I understand correctly, a popular mod for the Banshee is to move the wing cutout forward, sawing it again.
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The stock length of the schnazzola on the SIG Banshee is 9-3/4" from wing LE to the end of the engine bearers. The root chord on the flapparrooni's is about 1-15/16" also scaled from the plans. The flaps are full-length but the tips are blended into the rounded wingtip planform.
Good luck with your Ryanized Banshee....
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If I understand correctly, a popular mod for the Banshee is to move the wing cutout forward, sawing it again.
I built one from the original issue of kits. The nose was way too long, unless you like tail weight. In lien of moving the wing, too late for me, I shortened the nose twice.
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Thank you for the advice and measurements, exactly what I needed. Will keep y'all posted on how it goes. :)
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Over the years, I've built 3 - 4 Banshees and been instrumental in the building of a few more.. I made some modifications along the way.. That long nose will accompany a light weight engine such as the Fox .35, and will balance pretty close without any additional weight.. To accommodate my OS .35 w/ custom muffler, I shortened the nose 2 inches.. I built the stab from 5/16 " sheet balsa and 1/4" elevators. I lengthened the stab span to 21 inches and squared it off at the tips just to add a tad more area. I removed sections of the fuselage behind the wing and stab ala Nobler style. I also "inserted" one 3/32" vertical former in each bay. I used 1/16" aircraft ply for doublers and sheeted the remaining fuselage with 1/16" EXTREMELY LIGHT balsa. Lastly I installed half ribs ala I-Beam between each full rib, extended between the LE and wing spar. These ribs eliminated much of the covering sag between the ribs. A couple of these "modified" Banshees needed a tad of tail weight to "fine tune" the C/G, but overall, they flew much better than a stock Banshee... I still have one of them that I built for my daughter when she was still a pre-teen...
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When I kitted the Banshee a few years ago through RSM, I moved the wing forward 1 1/2 inches. We just called the redesign the Griffin Banshee. It flew a heck of a lot better with the wing moved forward.
Mike
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Was given a fairly well used Banshee and modified it several ways. Hasn't yet flown but she's in the desert bowl and I'm getting the cream ready.
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one of the posts says move the wing forward 1 inch , ad 1 inch to each side of the tailplane & elevator . or https://stunthanger.com/smf/open-forum/big-jim's-plane-was-it-the-first-one/msg54385/#msg54385
Let me tell you about the pink Banshee.
1) 54” span equal panels
2) Half ribs to spar with vertical webbing between spars
3) Adjustable Tip weight box and movable leadouts
4) Flat wing tips
5) 8 1/4” nose
6) ¼” stab and elevator tapered to tips 261/2” span
7) Diamond shaped Fuselage with the top and bottom end 1/8” thick
8) Barn door flaps 2 ½” to 1 ¾”
(https://static.rcgroups.net/forums/attachments/2/6/0/0/5/2/a15474641-97-Resized_20211022_054914%20%282%29.jpeg)
https://www.rcgroups.com/forums/showthread.php?3997575-SIG-Banshee-Rebuild
(https://static.rcgroups.net/forums/attachments/2/6/0/0/5/2/a15474643-182-Resized_20211022_054926%20%282%29.jpeg)
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Theyve all been at it .
(https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fplans.modelaircraft.org%2Fwp-content%2Fuploads%2F2020%2F09%2FMA00749MA1.jpg&f=1&nofb=1&ipt=aa8e3b36eba663aa217cc24256a773b20db4c60c06d7560b1d741427302f7def&ipo=images)
How Too . https://library.modelaviation.com/edition/model-aviation-199312#&gid=1&pid=116
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This is a subject that interests me as it comes up pretty regularly and I have been wanting to post this before.. The history of the Banshee and how it came to be has been posted many times, but a quick review is, that after the unexpected success of the SIG Chipmunk, Glenn SIG assigned a task to Mike Stott to come up with a quick building profile model that had the same flying characteristics as the Chipmunk, so flyers could use it for practice and not risk their contest Chipmunks. This was kind of what Glenn thought drove the sales of the Nobler and the Flight Streak, and he wanted to match that. The Banshee was designed with the nose length it had to accommodate the Fox .35 Stunt, which was the predominant stunt engine at that time and probably the lightest engine in it's class. The Nobler was designed with the Fox .35 in mind also, although George used other engines also. As time went on, and the lower classes of stunt began to fill up at contests, the modifications mentioned here began to show up. I was coming up the stunt ranks about that time and remember it well, and another model and modification was the Magician. It was popular to move the horizontal stab and elevator all the way back to the rear of the fuselage. and to opt for flaps. But the Banshee mods are the ones that are the best known, I think.
Guess what world famous, highly revered, nationally and internationally known model, multi time NATS and World Champion, has the same nose measurement and pretty close to the same tail moment measurement? I do a lot of reading of model magazines, and have no memory of anyone pushing to shorten the nose on this design, and it has had just about every power plant configuration in it that you could think of, ranging from the Veco .19, and I believe someone brought one to the NATS with a PA.61 in it? Lots of use of the ST.46, LA.46 and numerous different .40s of all brands. Sure, there are some other physical differences between the two airplanes, but the close similarities makes me wonder if Mike made it that close on purpose, and not exact, so it couldn't be said he was plagiarizing anything. I haven't measured up the rest of the two airplanes to see how they compare elsewhere, but when it comes to shortening the nose of the Nobler, I think you will have a hard time getting a large enough fuel tank in it for anything other than the Veco .19!! The two ARFs that I have been fooling around with ended up with custom built tanks that I wish I could have gotten another 1/2 to 3/4 ounce capacity in and still be able to get them in and out of the airplane!. I just thought I would point this out as a point of history, if for no other reason. I know I have seen guys cut the nose off their Banshee fuselages and then have to work to add useful nose weight to get their model to balance.
Type at you later,
Dan McEntee
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I have a banshee kit on the shelf. It will be my next build and target of my Pod Mod.