RE: Better to build straight wings or wing with some turn up near the tip.
There's actually a lot of things that go into a wing design. You have to take into consideration the main type of conditions it's going to be flown in as well as just how it's going to be flown. (Thermal or aerobatic etc) Very few full scale sailplanes use a poly wing yet are able to find lift just fine. When you scale the size down to your typical model span, you need to increase the stability hence the poly layout on the majority of model sailplane wings. Flat wing models tend to be more squirrely and better suited to aerobatics than a plan form with a strong dihedral or polyhedral. Airfoil choice is also going to have an effect in how a plane flies. Thicker airfoils while they provide more lift will fly slower than a thinner airfoil. ( The Paragon comes to mind. Wing is pure lift but it's a slow flier unless you ballast it up quite a bit.On the other hand a Windfree is a thinner airfoil and will thermal just about as well.) For my money, the Drela line of airfoils offer the best compromise between lift and speed. He also proven that you don't have to keep the same airfoil the entire length of the wing. By using a slightly different airfoil at the tips you can cut way down on tip stalls etc. Take a good look at some of the models that use his airfoils and you'll find that they change from root to tip and may actually use 3-4 slight changes over the span to optimize the flight characteristics over a wide span of flight conditions. My current design project uses the Drela AG-40 thru AG-46 foils along the length of a 16 ft 4 in wing and is intended for use in XC flying. As such it needs to be able to find lift but still be able to move out when needed.
Posted on: 4/3/2012 5:42 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=11027272

RE: Floater; which kind?
Another good choice would be a Paragon. Same span as a BoT but a little bit more of a floater. It can handle plenty of ballest for windy days and will stay up in very light lift conditions. Kits are available from Skybench. You may want to check out Rays other kits as well. The Bird series are all great fliers and look very much like a BoT. Wide range of different sizes with them. Common knowlege is that you can't go wrong with a SkyBench kit.
Posted on: 10/19/2011 5:30 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10772759

RE: Gentle lady or Sophisticatied lady?
Actually you should always strive to keep all weight in a sailplane as "useable weight". The less lead the better. However... If you add a ballast system at the center of gravity, you can add more weight which will allow you to fly in higher winds. The floaters have a tendency to "dance" and become uncontrollable as the wind speed increases. The ballast causes the wingloading to increase there by making the wing use the excess energy instead of wasting it. A simple threaded rod and wing-nut mounted at the CG will secure it and keep everything secure. Cast up lead plates to size in several different weights (1,2,4, and 6 Oz) so you can adjust the amount of ballast for what you need at the time. I've used this system for years and am glad I learned about it.
Posted on: 10/18/2011 6:17 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10770982

RE: Gentle lady or Sophisticatied lady?
Gentle lady for sure. The Sophie has a problem with the fuselage breaking right in front of the vertical stab on harder landings. It's not just the Sophie though as this is a problem with just about all "T" tails. Having the weight of the horizontal stad up like that is the main cause. When ever I build a "T" tail design, I reinforce the fuselage in that area with carbon.
Posted on: 10/16/2011 4:11 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10768414

RE: it's about time 4 my Bird of Time
Hey Rock... I used a E-Flite Power 20 on my Paragon which has about the same size and weight at a BOT and found it to be a tad light on the power. Keep in mind that you don't HAVE to use all the power available from your motor setup. Tiz a far better thing to have the power and not need it than to need it and not have it to call on. BOT uses a different airfoil than the Paragon and it's not quite as much of a floater. My advice would be to build the BOT at light as possible, strong as you can make it and as straight as you can. It's a great classic design that can only be made better with a good electric setup.
Posted on: 10/14/2011 7:37 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10765867

RE: Flying gliders at 7200 ft.
At that altitude you need to select a model based on the airfoil. Something with a higher lift to compensate for the thinner air. Larger span is also advised but the airfoil is the more important of the two factors. I know the area you're flying in and I know it can get pretty windy at times so penetration will also be something to consider in case the wind comes up right after you launch. As to exact airfoil names and numbers that are designed for those conditions I can't say. You may want to post your question on the Charles River R/C clubs site. Dr. Mark Drela hangs out there if I'm not mistaken and he's known world wide as the "Master" of all things dealing with different airfoils. Jeff
Posted on: 5/15/2011 2:42 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10521640

RE: Glider ID please
With that swept trsiling edge on the tail tail, I can say for sure it's not a Two-Tee. The center section of the wing also looks a little shorter than the Two-Tee. I have had several Two-Tees and still have one in flying shape and so I know that plane very well. The age of the picture also seems to nix the idea that it's a Sophie.
Posted on: 5/8/2011 3:41 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10508688

RE: Merlyn by skybench?
The Merlyn was designed by Ken for flying the Level V tasks for LSF. Those of you that know the LSF tasks can attest to the fact that level V is a very hard step to complete. The Merlyn has the largest allowed lifting area for competition and is pretty much a flying lumberyard. I say this with great affection though as I only fly woodie sailplanes. I am currently designing a XC plane loosely based on the Merlyn,only with a higher aspect ratio. I'm also taking the airfoil over to the Drella set for large sailplanes and I can pretty much promise that the wing will be "winch-proof" on even the strongest winch available. The wing features solid carbon spars but the rest of the construction is pure wood. Currently calling it the A.S.P. XC and depending on how well it flies,I may eventually offer it as a kit.
Posted on: 3/17/2011 4:51 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10406647

Soariing in te Chattanooga TN area.
Hey guys, My company is talking about sending me up to Tn to help out for a month or so and I was thinking of bringing up a plane or two for something to do in my off time. I was wondering if there's any good slope flying sites in the area that have easy access. Any help would be great. The trip is not set in stone quite yet but I thought it would be a good idea to ask since the boss gave me a heads up already. Jeff
Posted on: 3/8/2011 3:05 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10387376

RE: glider kits
The BOT would make a good third or fourth build but shouldn't be taken on by a beginner. It has some tricky parts to it and might turn someone that has limited experience off from building. A build should be a fun thing to do, not a second job. One of the easiest kits to build would be someting like a House of Balsa 2X6. Easy build and a fairly good flier when trimmed out correctly. The main trick to building them is to keep it as light as possible in the tail feather area. It has a flat bottom airfoil which gives it pretty good lift and it can be ballested up when the wind picks up. Granted it won't handle a full on winch launch, but it's not designed for that. One of the best points about the kit is that it's not expensive and can be bought through just about any good hobby shop. Which ever kit you decide to start with, just remember to take your time and build it light and build it straight. Almost everyone here is willing to give advise if you hit a snag in the build and can also help you fix any mistakes (you will make them at some point) without too much pain. Jeff
Posted on: 3/8/2011 3:00 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10387364

RE: Sig Ninja Outdated?
There's really no such thing as an "outdated" plane. Sure, it's a bit old school but it will still fly. There are many people around that still build their planes and enjoy the building as much as the flying. Newer doesn't always mean better. Nothing says you can't update some of the materials used in the construction to improve the strength or to make a design lighter. I did just that on the Windfree I built and am glad I did. I am still flying planes like the Paragon, Gentle Lady and Windfree, all of which are older than the Ninja.
Posted on: 1/18/2011 3:54 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10271439

RE: First thermal?
It wasn't my first thermal,but my most memorable one that comes to mind. I had been doing mostly slope flying at Torrey Pines and decided to take my Paragon out to the desert to give thermaling a try. I launched using a heavy high-start and was hoping to be able to stay in the air for at least a couple of minutes when I hooked up with a real boomer. I went from about 300 ft agl to specked out in a matter of minutes. One thing that I learned was that while spoilers are not needed for the most part on slopes, I sure needed them in this situation. Alas I hadn't built them in and so I was without the advantages that they can give. I ended up loosing sight of my Paragon (I was thinking I might have to rename it "paraGONE") when I spotted it again. I managed to break free of the thermal and got it back down to about 1000 ft when I ran into another boomer and my plane was climbing without effort once again. This cycle continued and after over an hour I finally managed to get it back on the ground. Lesson: If a plane has spoilers in the design, build them in!!!! Tis a far better thing to have them and not need them than to need them and not have them!
Posted on: 11/19/2010 12:05 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=10145436

RE: seeking advice from the experts on our first plane
When you and your brother are ready to start building let me know. I'd be more than glad to help in any way I can. I can understand wanting to get in the air quick and building does take some time. There are lots of tips and tricks that the guys here and on other forums are glad to share. As far as a 4 channel radio goes, I say it's a good idea to get it even if you don't need all of the channels at the moment. If nothing else it will give you some expandability for future planes. Just make sure that you can get extra receivers for so you don't have to keep swapping a single one between planes. I have a single TX and 6 RX units and am considering getting a 2.4Ghz system once I have moved to Arizona later this year.
Posted on: 6/2/2010 4:08 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9775235

RE: seeking advice from the experts on our first plane
Welcome Mudpuppies! A lot of your choice is going to come down to one of two options. To buy or to build. Buying you have no real idea as to how the plane was put together which can make repairs tough at times. Ozmo is 100% right. First planes will need repairs somewhere along the line. If you build it from a kit, you'll have the plans and all the information needed to do repairs. If you decide to build here are some suggestions that I feel would make for good first planes. 1. HOB 2X4 A very easy to build plane that is a good flier. Simple arrow-shaft leading edge on the wing and rugged construction. 2 channel (R/E) and about 4 ft span. Can thermal on a good day and can be converted to electric without much trouble. 2. Gentle Lady: 2 meter poly wing and one of the best trainers you can get. Not expensive for the kit and it also uses 2 channels for controls. (R/E) More sailplane pilots have learned on a GL than just about any other plane on the market. Easy to build if you take your time and follow the instructions. There are of course other kits you can get but these two are the ones I know well. I'm sure others will add to this list as time goes by. Building your plane can also give you a lot of satisfaction in itself. Seeing something that you've built take to the air is a special feeling. Be warned though... It can also be nerve wracking! First flights of "your new baby" should be done with the help of an experienced pilot. Another thing you could consider for launching would be a "Quick-start" It's a mini High-Start that will work well on a football sized field and will give you launches of about 250 feet which is high enough to catch thermals.
Posted on: 6/1/2010 7:40 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9772860

RE: Gentle Lady recommendations?
Pauls' idea is a good one! By extending the nose on the GL and moving the equipment forward, that would also open up the fuselage area at the CG for adding some ballast so you can fly in higher winds. I've heard of "A" mountain Bryan but have never flown there. I'm going to have to check it out when I get out there!
Posted on: 6/1/2010 7:25 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9772838

RE: Gentle Lady recommendations?
Trickbrick, You're going to love flying in AZ! Boomer Thermal abound there!!! I'm moving there soon myself. I'll be a couple hours south of Phoenix in the area around Sierra Vista. Once I'm there and setup, I"ll be making kits for several different sailplanes. Everything from slope to TD to XC. We'll have to get together and do some flying. If I get the place I'm looking at, I'll have 10 acres of flat land with a slope on the other side of the road. (Guess that answers the question of why did the sailplane pilot cross the road?... ) Jeff
Posted on: 5/30/2010 2:58 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9769200

RE: Gentle Lady recommendations?
The Gentle Lady is a good ship as is provided you use it in light winds. It is designed as a thermal ship but will fly well on a slope. I've flown them all across the country and in all conditions so I'm well versed on them. Interchangeable wings are a good idea for what you want to do. That will give you the best of both worlds. However... I'd forget putting the spoilers on the slope version, as it would be pretty much a waste of materials. I'd also change the airfoil over to something like a S-3014. This airfoil will give you both good lift in light lift as well as penetrate the wind better as it picks up. Flaps and ailerons also work well with it. Build the wing close to flat instead of using the poly layout. For the thermal version, you could use the poly configuration and add flaps only. You'd have a stable plane with a ton of lift. The Gentle Lady design has been around for years and for good reason. Many people got their first taste of soaring with one and to this day they have a very loyal following. They're great planes for those lazy days when the wind is calm and you just want to cruise around the sky and relax. You can add provisions for ballast and extend the abilities of it in higher winds. A couple of ounces of lead at the CG will allow you to fly in winds up to about 10 mph. Unless you strengthen the wings with some carbon, I'd avoid adding any more weight than that to it. Built stock it's meant to be a floater so it isn't designed to pull high Gs.
Posted on: 5/29/2010 9:51 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9768066

RE: Questions about winches
Your best bet would be to hook up with your local sailplane club there in San Antonio. Have one of the members take a look at your plane and make sure it's all balanced correctly and ready to fly. Launching from a winch is no harder than a high-start but there are a few differences. Since it's a built up wing, you can't go full peddle on the winch. You'll have to tap it on and off so you don't snap the wings. Again... Someone at your local club can show you how. You make no mention of if you've got any R/C flight time. If not, then be SURE you contact your local club for help. It would be sad to hear that you crashed such a nice looking sailplane on your first attempt to fly it. Maybe some of the members here that live in your area would be willing to help. If no one here speaks up, you can try posting over at RCGroups.com in the sailplane section. I know there's some fellow Texans there. Jeff
Posted on: 5/27/2010 6:10 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9762383

RE: Anteres - Thermal or Slope
The Antares is a good design and actually will thermal well if you build it as light as possible. Back in the days when it was first released for sale, we didn't have all the new composite materials to work with and by today's' standards it's something of a lead sled. Radio gear was also a lot heavier as well. They were excellent fliers at Torrey Pines on most days, but could really cook when the winds were up. If one could find a kit for the Antares for a good price, and used some of the modern building styles in the construction, it would make a great thermal ship. You'd just have to keep it on a diet to keep the weight down. Keep the servos as small as you can, and try to make sure that the majority of the weight is "usable" weight instead of having to add lead to balance it out. Keep the tail feathers light and that will go a long way towards reducing the amount of lead in the nose for balance. If you're feeling really REALLY ambitious, I'd strip her down and lighten her up as much as possible. Lightening holes added to the tail where ever possible, sand it as much as possible in the tail area and maybe add a layer of glass to the nose area of the fuselage for added strength. If you could loose 2-4 Oz of overall weight, you'll find that it's a much better thermal ship than it was before.
Posted on: 5/26/2010 12:28 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9759766

RE: glider design
At a span of 50 inches, such a design would make for a nice slope plane but not all that great a thermal flier. Ailerons are nice on a slope plane but like BMathews said, they can get you into trouble if you're not used to them. At 50 inches, to be a good thermal plane you would need to keep it as light as possible. Think something like a DLG here. Light, strong and with a good airfoil. The drawback to that layout is that they're not really good in winds. If you ballast it up, you'll increase how well it can penetrate the wind, but loose it's floater characteristics. For thermal flying, the old saying of "bigger is better" is very true. At 50 inches, your plane would fall well below the 2 meter span range which is by many considered to be the lower end of a good thermal ship. I for one love the 2 meter class and have had some great ships in that range over the years. If built right, they will handle slope flying well and still be able to thermal. If you have room to build and haul a 2 meter ship, I think that may be more towards what you'd really like in a "Combo" ship. There's also the airfoil to consider when designing a sailplane. This is usually chosen by the type of flying that you intend to do with the ship. Most thermal ships have airfoils that are flat to semi-symmetrical in shape while many of the fully aerobatic slope planes will use an airfoil that is closer to being fully symmetrical. The projected weight of the ship will also have an impact on airfoil selection. As to sheeting the LE of the wing, It has both good and bad points to it. The good being that you get a much cleaner shape to your airfoil LE as well as extra strength in the wing. The bad being that you end up with a lot more weight to have to provide lift to over come. My current design project includes a full "D-tube" leading edge and full house controls (Flaps, Ailerons and Spoilers) on the wing but I've also got 196 inches of span to provide lift. AT 50 inches you're going to need to keep it as light as possible or you may end up with a plane that will only fly on a slope with strong winds hitting it. EDIT: ANOTHER THOUGHT HERE... At 50" X 30" you're going to need a lot more lead in the nose to bring her into balance. The further back from the wing you have the tail feathers, the more weight it's going to take in front of the wing to offset that weight. Look through some of the on-line shops to get a better idea of proportions of sailplanes that are already flying and on the market. The "wish-books" can provide you with a lot of information. Span, length, airfoil used weights etc.
Posted on: 5/20/2010 10:07 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9748244

RE: The best airfoil section for slope?
For me it depends on what the conditions are at the time. If the wind is weak I go with a flatter bottom airfoil for more lift. If it's blowing good, something that will give me more speed. Of course since I've been living in the flatlands of middle GA, I haven't been slope flying for ages! Soon to change though!
Posted on: 4/19/2010 4:33 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9673171

RE: hi all
Yo Hawkman! You might want to check these guys out. i've done business with them in the past and have always been happy with them. http://www.espritmodel.com/index.asp?PageAction=VIEWCATS&Category=607 I'll soon be moving out your way, though I'll be waaaayy south of you in Sierra Vista. I'm looking forward to catching some of the boomer thermals out there again! Jeff
Posted on: 2/26/2010 6:06 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9538300

RE: Nice Glider To Build
[quote]ORIGINAL: kwmtrubrit Sig Riser 100 (if you can get one). Easy build and a very good flier. Keith [/quote] Why did I just know that you were going to say that Keith?
Posted on: 2/18/2010 10:37 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9514736

RE: Spirit Elite Kit discontinued?
Yeah... you can chalk that up to people that "want it right now" and are either too lazy to learn how to build their own or just don't know the pleasure of building. To me, building has always been part of the hobby and speaking honestly, there are time I enjoy building more than flying. I guess that's the woodworker in me. But there's a special feeling you get when you see something that you've made with your own two hands take tothe air for the first time. Many of the "new breed" will never know this feeling. I guess those that only want to fly but want something diffferant then the ARFs can always pay people like me/us to build them up a real plane. ;) could help to offset our costs for the hobby
Posted on: 2/18/2010 10:34 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9514726

RE: Spirit Elite Kit discontinued?
I think it's a shame that more and more planes are only available as ARFs. I have a feeling that it won't be long before a lot of building skills are lost to the newer generation. Thank goodness for comapnies like SkyBench that are actually puting out more kits than ever before. At least someone feels that building is an important part of the hobby. I for one have never owned an ARF plane and never plan on getting one. I figure that if I can't build it, I don't need to fly it. The Spirit Elite was a much better plane when built from a kit because you culd build it much lighter than the ARF version.
Posted on: 2/18/2010 10:22 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9514704

RE: GP Spirit 2M sailplane - glow power?
I used a Black Widow .049 on an old Bob Martin Pussycat years ago. It worked, but as others have said, it made a mess. I gave up on it and went back to flying pure gliders until they came out with the EP units. Sure, they can weigh a bit but for my money, it's worth the extra weight. You can also fly them without ticking off the locals by your flying field because they're quiet when compared to a slimer motor. I currently fly a Spectra (heavy weight dog IMHO) and have made an EP fuselage for one of my Paragons that works great. I usually bring these two out to the local sports complex to fly them. Although there is enough room to set up a high-start, the EP saves me the time of having to do so. I'd say go electric as it has more pros than cons when compared to gas. ...And yes.... I'm older than dirt, but only by a day or two! Any more cracks about my age and I'll have to beat someone with my cane!
Posted on: 2/16/2010 2:43 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9509617

RE: Futaba 8FGA for soaring?
Oh... you can also download the manual for it from the download section. Other than going out and buying one, I'd say that's about the most info you can gt on it.
Posted on: 2/16/2010 2:05 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9509527

RE: Futaba 8FGA for soaring?
here's the link to their product page. I also fly a lot of full house stuff and I'd buy it, http://2.4gigahertz.com/systems/futk8000.html Jeff
Posted on: 2/16/2010 2:02 PM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9509521

RE: electric bot.
My Paragon is about the same size and weight as a BOT. I used an E-Flite Power-25 outrunner with a Phoenix -45 ESC and a 10 X 7 folding prop. I get several climb outs on a single charge with a Lipo battery. A BOT and a Paragon are a lot alike in flying characteristics in that they're both floaters and will only benefit from the weight of the electric power system.
Posted on: 2/6/2010 11:20 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9481371

RE: spruce vs basswood for spars
If you're looking for [b]GOOD[/b] Spruce, then you need to check this place out. This is their main job. supplying aircraft grade Spruce for full scale aircraft. For modeling stuff look in the "Cap strip" section. Lots of sizes that are perfect for modeling. If you have a good cutting tablesaw you can buy a large board and pretty much have Spruce for life. Most hobby shops I've hit in the last few years don't have near the quality of days gone by, and longer lengths are very hard to find. Another plus is that they have shops on both sides of the country. Corona, CA and Peachtree City, GA. I found them when looking for spruce for the fuselage framework on the Zogling SG-38 I'm fixing to start soon. If only the Pilot figure had been so easy to source out! http://www.aircraftspruce.com/menus/wp/spruce.html
Posted on: 2/6/2010 11:09 AM by Author "scaflock" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=9481345