The plastic tube that I use is the same tube that I have used for a number of years in wood or composite fuzes that don't have much or any carbon. There fore I haven't changed the balancing parameters that I have been using all this time. Now for those who are really worried about the weight of the tube. On my scale I get just 2.5 grams, of which in my Graphite 2'S, 25% is ahead of the CG. With 1102 square inches of wing area and AUW of 68.75 oz's. my opinion is that I have not paid any penalty in either weight or balance and have the piece of mind that I have a system that can deal with a flying range that exceeds my old eyes capability.
Again regards, Dave Corven. -------------- Original message ---------------------- From: [EMAIL PROTECTED] > Good set-up; The point about spacing away from the CF is valid, however the > plastic tubes I suspect requires additional nose weight to offst it's mass. > > As far as the spacing issue, if one can get the antenna element away from the > CF equal to or greater than the cross sectional thickness (of the stranded > portion - not including the thickness of the jacket material), you have > effectively reduced x4 any (if there is any) reciprocity/association with the > CF boom. > > So a layer of your colored tape placed (you could split it lengthwise - just > wide enough to displace the antenna) on the boom first, plus the jacket > material thickness itself would be (electrically) adequate. > > This is most critical where it runs parallel in and outside the fuse (the > exit > point is @ 90 degrees or some nearby value)... > > Quoting [EMAIL PROTECTED]: > > > I have a pair of Graphite 2's with the carbon/kevlar fuse and a carbon keel > > to mount the radio onto. Whew, thats a lot of carbon. > > Anyway I completely enclosed the RX antenna in plastic tube starting right > > at > > the RX along the keel to about 1.75" behind the towhook and out through the > > fuse in a short piece of plastic tube and rearward also in more plastic > > tube. > > Out side of the fuse the tube is taped to the fuse with 1/2" wide electrical > > tape same color as the fuse for disguise, and biased slightly to the left of > > center to keep off the ground while landing. No antenna hangs out. The > > reason > > for running the antenna in plastic tube is to slightly space it away from > > the > > carbon/kevlar structures to prevent any blocking of signal reception. > > Ground range is outstanding and I am able to fly this arrangement to the > > limits of my eyesight which is still pretty good as compared to some of my > > other body compoments. > > I will use this in my new Supra, #16, without question. I might add, Hartmut > > Claus, Mr Picolario, is the guy that showed me this trick so the credit goes > > to Hartmut. > > > > Regards, Dave Corven. > > -------------- Original message ---------------------- > > From: [EMAIL PROTECTED] > > > In a message dated 2/14/06 11:34:30 AM Pacific Standard Time, > > > [EMAIL PROTECTED] writes: > > > > > > know some are using an early exit below and taping to the bottom of boom > > > with some 4" hanging free. > > > Mine is configured this way and I have had no problems in the first > > > 20 > > > > > flights. I only have about 2 inches hanging down. > > > > > > Don Richmond > > > San Diego, CA > > > [EMAIL PROTECTED] > > > www.hilaunch.com > > > > > > > > > > > Simon Van Leeuwen > PnP Systems - The E-Harness of Choice > Radius Systems > Cogito Ergo Zoom > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and > "unsubscribe" requests to [EMAIL PROTECTED] Please note that > subscribe and unsubscribe messages must be sent in text only format with MIME > turned off. Email sent from web based email such as Hotmail and AOL are > generally NOT in text format RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
