[RCSE] Trainers
Thanks for all the good ideas. I'll huddle with the students and let you know what they come up with. Bill -- Whatever you do will be insignificant, but it is very important that you do it.- Ghandi Bill Johns Pullman, Washington RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Winch Chutes
Who has winch line chutes? 12 " diameter, able to take a petal to the metal F3B/F3J launch. TIA Bob Rice Rocky Mountain Soaring Assn. Denver CO USA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Re: Stylus Batteries
Paul - I have recently refilled a pair of Stylus cartridges with 1100's they fit like the original 700's and last long enough for any sane human. With a field charger they are enough for that occasional bout of insanity as well. Last I heard Johnny Berlin had them ([EMAIL PROTECTED]). You could also get the cells from E.H.Yost (MrNiCad). They won't make your 'mitter as heavy as the 1700 cells that the Gordinater likes, but how often do you really need to fly that long? happy trails - Rob Glover Does anyone know a good source of battery cartridges for the Stylus? I can't find much on the net. After an initial pass at attempting to retrofit the system to use larger 1700 MAH batteries that I'd rather use multiple cartridges instead, and stick with the Stylus engineering. Seems like having two, or at the most three 1100MAH cartridges would do the trick, giving the best of all worlds... Reasonable quick-charge time, fairly long flying time, and a very quick land and switch batteries once or twice in a day, at the most. The 1700 MAH batteries are too big to use in a cartridge-like manner, and seem to require modifications to the whole battery chamber, and definitely aren't removable on the fly. If I was going to mess with anything at all, I would take the stock 700 MAH cartridge itself, open it up and insert 1500MAH AA-size batteries. Not sure how feasible that is. That cartridge looks pretty well sealed. A subject for tonight's investigation. -Paul RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Multiplex wants to know
I want a new (*) eight channel S (ingle) S (tick) radio. Regis * programmable -Original Message-From: Karlton Spindle [mailto:[EMAIL PROTECTED]]Sent: Tuesday, February 15, 2000 9:30 AMTo: [EMAIL PROTECTED]Cc: Norbert HabermannSubject: [RCSE] Multiplex wants to knowI just got back from Germany and we want to hear from YOU on what YOU wantin a R/C system.Please let Dr. Hess know what YOU want! [EMAIL PROTECTED]Smooth Thermals,Karlton MrMPX Spindlehttp://www.MultiplexRC.comRCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
[RCSE] Fwd: [RCSE]Radio Shack 1000mah NiCads
I just got some 1000 mah NiCads from Radio Shack, and started charging at home using my 110D, at 1A. noticed that by about 270mah, they were getting warm and the voltage was up to about 7.3v. So now I'm charging at .2A. Wondering is there something about these that makes it imperative that you slow charge them? Rodger
[RCSE] hairspray as a release agent
Epoxyworks #14 Fall 99 in an article by Tom Pawlak suggested extra heavy hold hairspray in place of PVA on top of Meguiar's Mirror Glaze 8 Maximum Release Wax or Meguiar's Mirror Glaze Automotive Paste Wax . Anyone tried it?? Thankyou. Rick RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Krylon Paint
Please reply just to be sure with a number off the side of the can. I have managed to make every possible mistake in the book this winter and want things as specific as possible. Thankyou. Rick PS I kept reading the digest and Harley suggested white 1501 so I dashed downstairs to see if that was the number that I bought last week. Sure enough. Ah!!! Things are brightening already. Thankyou Harley Date: Tue, 15 Feb 2000 13:22:37 -0800 From: "Gary Milabar" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Krylon Paint I remember a while back some talk about the NEW Krylon paint and that it wasn't as good as the old style. I'm getting ready to finish up a TD ship and don't want to ruin a good set of wings. What or how can U tell the difference in the two paints. Someone mentioned that the old had High Gloss written in black on the cap, and that the new had HG written in white. P.S. the Wallmart here has almost all white lettered caps. Thanks G.M. Elko, Nevada RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Update; Rx problems-need a source of choke
Damn, you guys are good! Rob Glover Skip it. Can anybody explain what a "choke" is? It's when you miss your landing at a National level contest and you claim your approach was impeded. You appeal your way past the landing judge, the contest CD, all the way to the top board of officials who finally after an hour give you a second shot at the landing... ...and then you miss the 2nd attempt landing. -- Tom Broeski -- Afton, VA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Laguna Slope Open
The Slope at Laguna Niguel is now open to soaring 7 days a week sunrise to sunset. I will post further on the details and official park dedication/ party to be held slope-side. Tell the guard at the gate you have "the need for speed". Try not to mention "combat" or "pediphillia" or "bestiality" or other related subjects. oh, and can I fly your plane? John Roe Laguna Hills, Ca www.martialartsacademy.org Historians exercise great power and some of them know it. They recreate the past, changing it to fit their own interpretations. Thus, they change the future as well. --Leto II, His Voice, from Dar-es-Balat RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Hand Launch Video FAQ
The video is now a full month behind my promised date. The problem is mainly that it was professionally shot, and for basically free. The editing etc. has not happened, due to the company who has the digital masters (nearly four hours worth of raw footage) not having "spare time" to turn it into a video for me. For free. I am looking at other options right now. Unfortunately the results may not be as professional as I had hoped. The information will still be as valuable. If all you were expecting was something like my "Joe Wurts does DS" video you may not be disapointed. John Roe Laguna Hills, Ca www.martialartsacademy.org Historians exercise great power and some of them know it. They recreate the past, changing it to fit their own interpretations. Thus, they change the future as well. --Leto II, His Voice, from Dar-es-Balat RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Radio Shack 1000mah NiCads
Also, another question about these batteries.I have them in a square Radio Shack batt holder, the one with the spring connections, and with a clip on 9v wire out. Is there any reason why this arrangement, with tape would be no good for our uses? Kind of neat to use off the shelf stuff like this at about $12 / 1000mah pack if it is possible. Rodger RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Klingberg Wing CG
Step 26. Install the radio so the center of gravity (C.G.) is between 7.5 and 8.25 inches aft of the nose of the glider. The C.G. must be within this range for the model to be flyable. You can check the balance by placing the wing on your finger tips with one finger on each side of the landing skid My old manual was lying in a pile of junk. It was dated 1988! My first sailplane! It really handles much nicer when you put winglets on it. Definitely a good mod. Have fun John Asplund AeroMech San Luis Obispo, CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] re: RX Xtal
Just does not pay to assume!! I thought he miss typed 62.130, the fact he ask is 72.130 ch#17 ?? Yes on my chart 72.130 is ch# 17. My humble apologies Brian Smith - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, February 15, 2000 8:45 PM Subject: [RCSE] re: RX Xtal You Wrote"o: [EMAIL PROTECTED], "soaring" [EMAIL PROTECTED], "E Flight" [EMAIL PROTECTED] Subject: Crystal rx ? Message-ID: v04210111b4cf6bd8db22@[128.102.174.173] Hi all, I need some info regarding the Rx crystal freq. I come across a Hitec platinum rx in one of my many junk box, the crystal has 62.130 stamp on it. What frequency is the rx with this crystal in it? 72.130 (ch 17)?? Any help is appreciated. Regards, Brian Brian Chan, An Electric Airplane Junkie in San Mateo.Ca.USA -- Date: Tue, 15 Feb 2000 14:56:42 -0600 From: "Brian Smith" [EMAIL PROTECTED] To: "rcse" [EMAIL PROTECTED] Subject: 72.130 Message-ID: 004c01bf77f7$2a473380$37344fd8@oemcomputer Yep72.130 is Ch# 17 Brian Reply"" WRONG: That's not what Brian asked. He asked if the 62.130 Meg Xtal was a channel 13 Xtal and it IS NOT. Receiver crystals are 10.7 Megs off of the Xmit frequency to provide the offset for the receiver's first IF. 10.7 plus 63.130 equals 72.830. If it is a dual conversion receiver then add .455 MHz more. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Re: RES and Skegs.
Ray - Tim McCann's skids and skegs are really nice, and a couple screws or some tape will remove them. He has a range of stopping devices, allowing the ultimate in skegology. The 1/2'' cf rods look ugly even to me. happy trails - Rob Ray Hayes call or fax..1-(219) 434-1322 Sky Bench Aerotech email. [EMAIL PROTECTED] 9218 Thunder Hill Place website.. http://www.skybench.com Ft. Wayne, Indiana 46804Model Aviation Headquarters Greetings, It is not much fun flying an RES in a contest without skegs, especially if the other contestants have them. If the landing area is soft and grassy, you can easily spike the spot, but if your flying on hard pan dirt with very little grass your in deep trouble. I placed 2nd in RES in the Phoenix SWC with my Big Bird and majored in sliding through the landing area for a lack of a skeg. I finally put one on during Sunday, but it was to late. The good news is I met the first place winner, Mark Howard, who was flying a Victory SE. Congrats Mark. The point of this post is to pass on my new approach to RES when skegs are allowed. I am going to put a single one on the nose and the common carbon rod through the fuse behind the wing. Both will be detachable for those contests where skegs and such may not be allowed. See you next year Mark. Happy Landings, Ray RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Info on Emerald by Wood Logic needed
I am asking this for a friend not on the exchange Can anyone give em any information on a plane Emerald by Woodlogic? Does someone still sell kits? Price range? Performance? Etc. Is is built up wings, etc? TIA, Brian Turner Montgomery, Al __ Get Your Private, Free Email at http://www.hotmail.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] New Laser Incidence Meter?
Anyone tried out the new Accupoint Laser Incidence Meter? http://www.towerhobbies.com/promos/00jf/gpmr4020.html jtm RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Airtronics PCM receivers...
My Vanguard PCM uses this PCM switch harness. The only thing you lose if you take away RX power is the Fail-safe programming. So you need to re- set the failsafe position. Not anything dramatic. -- Chuck Gadd Yup, you're right Chuck. It is *only* the failsafe positions which were lost. I didn't mean to imply all the programming, and sorry if anyone read it that way. Still, I thought it was a headache, as the failsafe wasn't set by changing numeric values (which could then be easily restored if they were lost). You had to move the surfaces to the desired position, and then 'lock them in'. Since it took me trial-and-error to find the desired settings, when they were lost it was like starting over from scratch. Regardless, that's not the technology used with the Stylus. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] PCM receivers/Tx
I know of a lot of people that prefer to fly on PPM instead of PCM. Any reason for their preference? I dont really notice a difference between either, am I missing something, or could this be similar to the debate in high end stereo of analog verses digital front ends- strengths and weakness on both formats- just more of a personal preference. Thanks, Walter RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: [RCSE]Radio Shack 1000mah NiCads
On Wed, 16 Feb 2000 11:17:07 EST, you wrote: but what about the rate of charge? What max rate should I expect, and what is the best rate? The best rate should be C1 which means the rate that fully charges an empty pack or cell in 1 hour (ie. 1 amp for a 1000mah pack will charge in approx 1 hr. ) You can get away with faster charging, but condition your pack first at C1 until you are getting 1000mah out of it. (You have to have a discharge meter for this - I have the Serius meter). Bruce Beddoe Pacific Palisades CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] How do you remove Krylon Paint?
I like using the sandblaster but it does require a gentle abrasive like walnut shells or baking soda and a light touch with the gun. Very fast and leaves a very nice surface for repainting. michael N6CHV AMA 77292 Rick Eckel wrote: Personallly, I've always found it easiest to scrape it off using a sharp knife held 90 degrees to the surface. It flakes off pretty rapidly and although it leaves thousands of flakes all in the hair of your arms, you don't have any solvent mess. Rick At 01:35 PM 2/16/00 EST, [EMAIL PROTECTED] wrote: Hi All, Speaking about Krylon. I have a couple of fiberglass fuselages that could use a new paint job. What is the best way to remove Krylon? Please let there be an easier way than just sanding and elbow grease. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Lightest possible covering.....
Check out; http://www.modelresearchlabs.com/ Look at the section, "Using Mylar covering Materials", great info and a source for mylar lighter than you need. :-)) michael N6CHV AMA 77292 Paul Breed wrote: Can anyone recommend a very light weight covering for a very small built up glider? If it is a clear film that would be even better. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: Composite spar sizing
Martin Wrote: Mark Drela posted some fine information regarding spar design and testing. Mark's approach is suited very well to wood wings, but I see some limitations to its usefulness for composite skinned wings. I disagree, I think it is very well suited to composite construction. The main spar is an excellent means for assuming all of the bending loads, and composite skins on a 45 degree bias provide all of the torsional rigidity. This is the common method of most composite wings, including hollow core. Mark's method has the spar taking all the shear and moment forces. This is fine for wood wings since the balsa, obechi, or ply skins provide very little bending strength contribution to the wing when carbon reinforcements are incorporated. That's due to the high modulus of the carbon compared to the wood...that means the carbon will have taken the entire loading and reached its failure stress before the wood components have strained enough to provide significant bending resistance. The same is true when using carbon spar caps and composite skins. Unless you use the same modulus carbon skins as you are using in the spar you end up with the same result of the higher modulus spar assuming most of the bending loads. For composite wings, we have to have a minimal amount of fiberglass or carbon in the skins just to provide enough strength to the skin to prevent finger denting of the foam core, resistance to hanger rash, or provide enough rigidity to molded wings skins. In addition, the torsional rigidity of the wing generally cannot be attained with only a strong spar, so some sort of skin is necessary. Using Mark's methodology will work well, but it might be a little heavier. I think this method is one of the lightest methods. The spar is located in the thickest part of the wing, which is the optimum location to maximize bending moments of inertia (squared function), hence is the optimum place to put all of your material designed to resist bending (The spar cap) The "I-Beam" structure is a very effective/weight efficient means for resisting bending. It is also amazing how well fiberglass/carbon skins on a 45 degree bias resist torsional loads. I personally feel this type of construction is simple and benefits from composite structutral properties. In other words you use a good high modulus carbon as spar caps to resist bending loads, and as Marks analysis showed it is amazing how light you can make the spar, and then use a lightweight glass/carbon skin on a bias for torsion. You get the best of both worlds in a simple process. If you had to incorporate skins to resist bending, you would have to orient the fibers spanwise, which would result in poor torsional rididity. Because of this basic need for the skin on a composite wing, it may be less efficient to beef up the spar so greatly when the skin strength can be incorporated into the equation. A stressed skin design should be a more efficient use of materials in our wings. Unfortunately, stressed skin design is not so easy. Use the spar for bending and the skins for torsion. Very effective and efficient. The spar place is in the optimum location for bending, the skins best suited for torsional rigidity. Many of you have seen or used Joe Wurts' wing design spreadsheet. That makes designing the wing skins easy, but the aspect that isn't incorporated into that spreadsheet is the shear and buckling design. It can be fairly easily ignored if you choose a high strength foam like spyder foam and also incorporate some sort of limited spar for shear in the core. This works fine, but it can be a little heavier than desired. I see the design of our sailplanes continuing on a path toward lighter airframes with lower camber wings to help the penetration capability. In the past 14 years that I've been involved with sailplanes, the prevalent camber percentage on our wings has dropped by about 1 percent(4 to 3). I think that many of us will be running aircraft with 2 percent camber in a few years if we can get the weight down to match the airfoil's Cl range. But we still will have the need for strength since the planes are still going to go through a workout on launch. We need to push the envelope to lighter airframes for this to be possible. Design methods that promote strong, but heavy, aircraft make it harder. Molded composite wings are a great way to go, but they are out of the reach of the common person due to the great effort in time and money. I believe that foam core construction will be the most available technology for most of us. There is research going on now that hopefully will make a difference in how we design and construct our wings. We have all benefited from contributions from brilliant and (or) dedicated individuals like Selig, Garton, Drela, Wurts, Hazel, etc... I fully expect that more will come from the likes of people like these and I think that improvements to structures and the resulting weight savings are the next
