[RCSE] Joe Wurts flying wing airfoil
I know of at least three new wing designs that have been discussed on this exchange recently which are using Joe's airfoil. I am intrigued enough now to want to experiment with the airfoil myself. Does anyone have a link to the coordinates, or at least a graphic of the airfoils profile? Mahalo! Brian Courtice Maui RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] hobby shack colored tape for epp foam
Could someone tell me how wide and how long the rolls of colored plastic tape are that hobby shack advertises on page 56 of it's winter 2000 catalog? TIA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] RE: Dam(n) Cold In Tennessee
-Original Message- From: Bobbi and Randy [mailto:[EMAIL PROTECTED]] Sent: Friday, January 21, 2000 12:25 PM To: RCSE Subject: Re: [RCSE] RE: "Dam(n) Cold In Tennessee" Yeah and I'll be laughing at you this summer when it is 115 there and it's in the 80's here. Randy Skip Richards wrote: Yeah, I actually had to sit and think about putting some socks on before slipping into my sandals it's been so cold. I even decided to close some of the windows before I went to bed last night, it looked so miserably cold. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] I'm laughing at both of you 'cause it's ALWAYS in the eighties here in Hawaii all year long:) Oh yeah, and good flyable slope winds blow about 300 days a year! RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] HLG Opinions Wanted
-Original Message- From: Marty Timm [mailto:[EMAIL PROTECTED]] Sent: Monday, December 13, 1999 3:12 PM To: RC Soaring Exchange Subject: [RCSE] HLG Opinions Wanted If anyone has any hands-on experience with either the "Carbon D-Lite" or the "Tom", please let me know your opinions. Feel free to contact me directly if you prefer not to share your opinion with everyone on the exchange. Thanks, Martin R. Timm [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] I have a carbon D-lite and I like it very much. It is a very pretty airplane, and it can be ready to fly in a couple hours out of the box. I have cs-10s, a hitec 555, and a 110ma battery in mine. I don't know the all up weight buts it is probably between 9 and 10 ounces. It flys very well, gets good launches and has excellent dead air hang time due to its free flight style under-cambered airfoil. I got mine on sale for $129 from NSP, and in my opinion the plane is an excellent value for the money at that price. Good luck! RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Off Topic
-Original Message- From: ScrollSander [mailto:[EMAIL PROTECTED]] Sent: Tuesday, December 07, 1999 7:03 AM To: Soaring at Airage Subject: [RCSE] Off Topic I am looking for a source of 3 views for a Gee Bee Racer. I have a model, and some plans, but I see some differences in the main cowl. Thanks, Chris [EMAIL PROTECTED] http://www.scrollsander.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Not nesassarily off topic there Chris... have you seen the footage in Endless Lift II of someone slope soaring a scale Gee Bee? The airplane looks like a beer keg with wings but will slope soar in enough wind. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] FMA Razor - my opinion...
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, December 07, 1999 9:21 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [RCSE] FMA Razor - my opinion... Flame suit is on. I wouldn't buy or fly it out of respect to Jerry Tiesan(sp?) of Zagi fame. Homemade ripoff's are one thing. Blatant infringement of this type (whether legal or not) destroys my trust in a company. I had an FMA 20 speed control. It didn't like the 16oz. framing hammer it met last month. 'nuff said Bring on your best blast - you know what I say has some merit. Bill Gillis Reno, NV RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] I must agree with Bill here. The producer of the Zagi kits made one discrete posting here some time back to the effect that at one point Trick RC and FMA had been business partners, and that Trick RC will have nothing more to do with FMA in the future due to FMA's blatant rip-off of Trick RC's design AND product name. I personally decided to boycott all FMA products on the spot when I read that post. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] hi wind = zero lift?
-Original Message- From: Raymond Wong [mailto:[EMAIL PROTECTED]] Sent: Monday, December 06, 1999 7:47 AM To: [EMAIL PROTECTED] Subject: [RCSE] hi wind = zero lift? It was very windy today, on sea level it was 15m/s(someone please tell me how to convert to knot?) when I got up to the top of the slope the wind felt like 70kph head on. The slope is usually very efficient even in light wind. I said to myself the more wind the more lift the more fun. I took out a foamie, and try to launch it. it was difficult just to hold it stable against the strong wind. finally i let it go. i was really expecting it to shoot right up, but it did not. it went up at most 20ft and just stay there, not moving forward or backward, just sinking slowly. when i push the nose down it lose 10ft height and only move 2ft forward. if i pull the elevator it will gain only 5ft, then stop and come back down 10ft. I did that for the whole hour before i finally gave up. lift was good on a light wind day. zero lift on windy day. can anyone explain to me what happened? Raymond Wong RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Your model was not penetrating. Ballast probably would have helped. A model designed for higher winds would have faired much better. If you are at a flyable slope, and the wind is blowing into the face of the slope, lift WILL increase as winds increase. However, many slopes will have a lot of gusty hard to penetrate air right on the edge. Once you get up and away from the hill and into the smooth lift band flying becomes much easier. When a good wind is blowing the best lift will be a lot higher up and a lot further away from the hill than it will be on a lighter day. A good example of the conditions you described have been happening here on Maui recently. The trade winds have been blowing at 25-35 miles per hour for the last week. ( A few of us flew at our monster cliff face yesterday with winds measured at a constant 40 MPH plus with much stronger gusts occasionally, you could have sloped a manhole cover if it had ailerons and strong enough servos... but that's another story.) The favorite local slope is inland and above the coast it faces, and the winds there are not as strong as down on the coast. Still the winds there have been blowing a good 15-25 mph. The high performance scale aerobatic sailplanes and fast sport slope planes have been ripping it up. Many of the guys with foamies and light lift slopers were wallowing around in the gusty launch conditions, constantly losing altitude and crashing into the bushes down-slope as the big boys played above. If a foamie did manage to penetrate the lip and get up into the smooth lift band and finally get some speed happening, it would then do alright. Once you get up there it is easy to dive down gaining speed and energy enough to buzz the slope face and still have the velocity required to smoothly climb up into the lift band again. If you try to fly your foamie at that spot on another really windy day, tape on a lot of lead, probably 8-12 ounces worth or even more, and on launch concentrate on keeping the wings level and try to push trough the wind until you get into the lift band. Believe it or not you will need to use a lot of down pressure on the stick. Essentially your model thinks it is in a shallow dive which it needs to be able to maintain airspeed, in reality the model will still be climbing in the strong lift. When you reach the best lift band (and you might be shocked how high and far away it will be) the plane will become way easier to fly, and you will begin to have huge fun taking advantage of the nearly limitless flying energy that strong slope lift provides. Good luck!! RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Mentoe HLG towhook question
-Original Message- From: Vogel Dental Lab [mailto:[EMAIL PROTECTED]] Sent: Friday, December 03, 1999 10:28 AM To: [EMAIL PROTECTED] Subject: [RCSE] Mentoe HLG towhook question I am putting together a Mentor hlg to take with me to the HLG clinic at SULA field next week. I really dont have the strength to throw like some of the guys do (spinal cord injury); so I would like to install a towhook to use a light-duty bungee with. Does anyone know where I should place it and how I should atach it? Actually, I need to know if this is an o.k. idea. Tom from Paso RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Here is what I do for my HLG's and it works very well. I make a hook that attaches with tape to the outside if the fuselage. It can be easily adjusted fore and aft, and can be completely removed when not needed. Start by putting a layer of packing tape on the fuselage. Make sure to cover an area from a couple of inches in front of the CG to several inches behind it. We are going to use layers of fiberglass placed directly over the fuselage to attach the hook. The fiberglass will not stick to the tape which forms a separation barrier. Fabricate a hook from 1/16 inch piano wire. The wire will have a section about 2 1/2 inches long which will sit on the fuse and get covered with fiberglass. At the fore part the wire bends down 90 degrees for about a half inch, and then back towards the tail about 1 1/2 inches at a slight downwards angle. At the aft end of the wire another bend goes 90 degrees straight down for about a half inch. This last bent part gets a couple of extra layers of glass with the wire poking up through it and then a "blob " of epoxy. This is to prevent the wire from rotating. Put a layer of fiberglass on the fuse about four inches wide, centered about an inch ahead of the cg... the exact placement is not critical. Position the hook over the first layer of cloth, and then add two or three more layers covering the wire hook with the vertical bends poking up through the glass cloth. Add a couple small pieces of glass over the rear 90 degree bent section, and allow a fillet or "blob" of resin to build up around this part of the wire. After the glass cures the part will easily pop off the fuse and can be trimmed and sanded to a nice shape. The part will bend a little and will easily conform to the slightly changing fuselage shape as it is moved forward or backward to position the hook. When satisfied with the placement of the hook fix it to the fuselage with tape. I usually place the tow hook about an inch forward of the CG. Experiment with moving the hook forward or back in small increments until you find what works for your model. This nifty little hook works perfectly and adds maybe a half ounce of weight to the model. The hook does not require any modification of the actual airplane or any permanent installation of anything on the aircraft. Try it, you will like it!! RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Re: Vacuum Bagging
I thought that both Chris and Del had some valuable things to say on the subject. That is the whole point of this exchange, ie this is a place to share and exchange ideas. It is unfortunate that when two people disagree about different ways to do the same job that sometimes the two people will get angry with each other. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] pink foam vs epp foam, was EPP Slope racers
I have scratch built several different foamie slope designs using pink foam, and there are some definite advantages to using this material instead of epp foam. The pink foam is cheaper by far, much more readily available in most localities, and weighs significantly less than epp foam. Pink foam is also a lot easier to cut and sand, regular epoxy and/or carpenters glue bonds perfectly to it, and tape or covering film will adhere to the material without requiring a coating in contact cement first. The disadvantages when using pink foam are that the material does not return to its original shape after being dented, and the pink foam will not withstand as much abuse as epp foam in the long run. These disadvantages to using pink foam can be overcome to a certain extent. 90% of the impacts on your wing due to midair's or rough landings will occur on the leading edge, so you will definitely need to have a hardwood leading edge. A hardwood leading edge wrapped in fiberglass tape will hold up for the life of the plane.The belly of the fuselage is another area which suffers a lot from landing impacts. On my models I typically attach a coroplast landing skid to the bottom of the fuselage. The coroplast belly skid also results in a slightly stiffer fuselage. As for the dents that will occur in the pink foam, many times an application of heat via a heating gun or sealing iron will cause the dented pink foam to re-expand to its original shape while tightening up the strapping tape or covering film at the same time. While the pink foam model will ultimately never have quite is much durability as a similar epp foam airplane, the pink foam model can be constructed more quickly and easily, especially for the scratch builder, and a worn out model can be replaced much less expensively. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
