Posts: 10140
Joined: 11/22/2003 From: arlington,
WA, USA Status: online
Here I am already bragging about something that isn't already built. RAYMONDs' capitol idea to create a group effort got me to thinking that all we need to make that idea work is a VOLKSPLANE, something that is cheap, easy and has MASS APPEAL. I have no idea if this is THE ONE, I can only say that with some experience with these sheet winged wonders, they have been a great way to build a light, low drag aeroplane that any amount of 1/2A power can haul with style. I'll try to size the fuselage with enough space to easily accomodate a 300 mah pack, and electron RX. A pair of HS55s or the GWS equivalents for servos. Are you with me so far? I picked up a nice sheet of 1/4" x 4 x 48" SIG balsa, and the whole thing only weighed 2.5 ozs, so we are off to a good start. The wing measures 5 1/4" chord x 25" span. I have razor planed it and sanded it to a nice flat bottomed airfoil, just like the STANGs'. Next, I will put in a short spar and fiberglass the center area. After that, cut in the ailerons and the cross grain wing tips and the wing is basically done, until the fuselage progress catches up to it. I plan on using a BIG MIG .061 for power with a 1 oz HAYES tank, which ought to be a pretty typical set up for many flyers.
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Joined: 5/22/2003 From: Enumclaw,
WA, USA Status: offline
Before I read what you were building there, I thought I was looking at a sheet FLYING wing... and that's it. How do you thing that would turn out? Just put a fin in the middle and call it good.
Posts: 10140
Joined: 11/22/2003 From: arlington,
WA, USA Status: online
Good Looking And Mucho Fun? The fuselage will be big enough to put servos INSIDE this one, and enough room for 2 aileron linkages, incase anyone wants to do a full roll. Howz that for mass appeal?
The variant to the GLH was the TD SPECIAL, it looked like a pusher style GLH. I had pretty good luck with my pusher, but after a couple of hours, the engine got sludged up with grindings from the front end. It was an AME with a 6x3 GRISH pusher, and gave surprising power! Never had any trouble with the prop hitting my launch hand. Your hand is well clear of the prop with a good hard follow through to the throw.
Posts: 5881
Joined: 9/3/2002 From: Burlington, NC, USA Status: offline
Hey CP there was an Ace GLH on the bay last week, I bid on it for $20 and so I didnt come here and say anything about it,,well I cant find it in my ebay but I think it went for $65??? apparently quite a few people were more interested than I was..looked pretty cool...so how is the new plane coming?...Rog
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Posts: 10140
Joined: 11/22/2003 From: arlington,
WA, USA Status: online
ROG, the GLH I built was an adventure, a new experience. I have never built another model the same way since. There was thin foam that was on the surface of a wood box to form the fuselage. Probably the first model I ever bought micro servos for [S133s].
Here is some progress of the GLAMF. The aileron cut outs would look better if they were in line with the wing tips, oh well. The fuselage has a little too much roundness for it to be a VOLKSPLANE type model, but it could be built boxy. It will be interesting to see how much trouble I have building in the proper CG, there isn't enough room to stack the battery in with the fuel tank. Worse case, the nose gets lengthened if it is a problem. I figure there will be room for a 555 RX and a 300 pack, though I will use the FEATHER RX.
After looking the photos over, it looks like some area can be removed from the vertical and horizontal stabs, and still be within TLAR limits?
< Message edited by combatpigg -- 7/13/2005 2:10:26 AM >
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Joined: 4/28/2003 From: Brunswick,
GA, USA Status: offline
CP, did you add some TE material or is the sweep responsible for the change in chord? Or both?
For areas on the tail I generally use 25% for the horizontal and 15% for the vertical.(of the wing area) That's a very basic rule of thumb that has always worked well. Just measure the area of the stabs the same way as the wing.
Posts: 10140
Joined: 11/22/2003 From: arlington,
WA, USA Status: online
PATRICK, I want the wing area to be about 125 sq.", so I came up with 5 x 25. I don't think I could ever go much less than 5" for a 1/2A model, for average chord. Someday when we're all building 6 oz 1/2A models, then those 22 x 4 wings like the NASS guys [ at DELPHI] recommended will bring the 2010 model GLH down to a new level of shrimpyness. It's funny how the mind works, 15 years ago I thought the ACE GLH was the hottest thing going for a TD. Now, with lighter gear it would be even better, and a good choice for the .074 too. Some day, someone here needs to expore what the .074 is capable of in a speed application.
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Joined: 12/8/2002 From: Valdese,
NC, USA Status: offline
CP, can't you find some decent looking women to hold your models when you photograph them? I have seen way too much of your left forearm and thumb lately. After I got past that the plane looks pretty slick.
Posts: 10140
Joined: 11/22/2003 From: arlington,
WA, USA Status: online
SR77, I got some new fangled RAYBESTOS synthetic brakes for it and US made rotors. I saw the same thing you did, and checked it [the firewall] with a square, I think the DB mount is holding the engine at an up angle, I'll probably just file the mount beams.
PBJ, It will be pretty fast, but I'm also hoping it will be a good all around flyer too. With this type of wing, a 30" span might be possible without the wing getting too flexible or twisty, and that would be a size more to the liking of the masses maybe.
VICMAN, that's my WIFEs' arm, man .
PATRICK, I edge glued a 1" strip onto the 4" stock. No matter how carefully I do it, there is always a ridge to sand ! The more span you give this model, with the same sweep angle, the more nose heavy it will get. Since I am going with way less span, [than the GLH] I hope the CG works out. .
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All Forums >> RC Airplanes >> "1/2 A" & "1/8 A" airplanes >> GLAMF!! 
GLAMF!! - 
I have seen way too much of your left forearm and thumb lately. 
After I got past that the plane looks pretty slick. 
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