Genesee Valley Aero Modelers
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Editor: Glenn Crocker As I sit down to write this column, I'm painfully aware of the fact that I really don't have much to offer - no pearls of wisdom, no news to pass on, no building hints, nothing profound or even not so profound. Moreover, I note that today is the shortest day of the year: only 8 hours 59 minutes of daylight. Could there be a connection here? Whatever the reason, your president has a very short column this month. We had a good turnout for the December meeting, especially considering the uncertain weather and the fact that this is the holiday season, a very busy time of year for many of us. The business meeting was short and we were able to spend considerable time just visiting and doing a little hangar flying. A gentle reminder: the annual dues are due. Remember also that your AMA membership must be renewed as well. We will begin planning for the 2001 flying season at the January meeting. In addition, Glenn will be taking orders for fuel. After the meeting, I'll be showing some slides of the RAF Museum, which is located just north of London. I took them a number of years ago at the time of my first visit to the UK. In the meantime, I hope that (unlike me) you are now working on your winter building project(s). I also hope you all will have had a great holiday and that you found lots of goodies of the RIC modeling variety under the Christmas tree. I'll be anxious to get a full report on the frozen finger fun fly. That's it for now.
Winter Flying and You Flying radio-controlled airplanes in the winter provides a few different challenges than flying in the summer. First of all, there are no bugs. This means you don't have to worry about a gnat flying in your ear when you're trying to flair for a hot landing. No distracting mosquitoes biting your legs, and no bees and hornets buzzing behind you. Also, no can of smelly bug spray in your flight box. There are, however, a few new things you do need to worry
about. Batteries will lose their stored energy faster when they are cold, so make certain you check their condition before each flight, and don't plan on flying so many times in one outing unless you have a charger with you. Plastic parts like to become brittle as they are chilled. And plastic covering is damaged much easier, too. This is just your airplane's way of telling you that it would rather be sitting in a nice warm basement Don't ignore these pleas for warmth, just keep them in your mind. December and January air is denser than June and July air. Denser air means your wings will generate more lift, and your prop and engine will generate more thrust. Lift and thrust are good. After all, they are the two basic elements of flight that Mother Nature did not provide to us. The lift is extra nice to have, unless your wing configuration is a high-lift design, then the airplane still wants to putz around in the sky when you are ready to head for home.Safety around a propeller cannot be ignored in the winter. Sure, your fingers are numb from the cold, so a strike from a prop's leading edge probably won't be felt until you thaw out the next day, but keep in mind that your gloves are bulkier than your bare hands, and they can get sucked into the airscrew much easier. Props also like to eat scarves that hang around your neck, so keep them tucked into your jacket. Footprints in the snow are not the best thing to have while attempting a takeoff or landing, so be careful where you step if you need to retrieve a dead stick. Being the mere hunters and gatherers that we humans are, we generally are not well equipped to withstand long exposures to cold. So pack plenty of coffee or hot chocolate in the car, and wear plenty of warm clothes. Standing still in the midst of a barren field requires more insulation than shoveling snow from the driveway. Good luck, fly safe, and DO NOT stick your tongue on the windsock pole! ftom Tile North West Angle Dues Are Due This is the annual reminder that club dues were due by December 31st. GVAM Fuel Fool I will be taking fuel orders at the December and January meeting. Two cycle
and 4 cycle prices are the same. Nitro Price/Gal. Have you ever tried using clothing dye to color your canopy, then end up blue
to your elbows? from The Fly PaperGreater Pittsburgh Area Radio Control Society Dick Kocur, Editor 1547 Pinehurst Dr. Pittsburgh PA 15241
Murphy's Law Applied to Model Airplanes Compiled by Robert Osono Trees are ALWAYS closer than they appear. Servo Setup By Joe Jackson Servo mounting should be done with rough treatment and vibration in mind. If you have some leeway with servo location, we suggest you do a preliminary balance check and locate the servos fore or aft accordingly. No need to load the airplane with more balance weight than necessary. We favor maple or other hardwood beams installed across the radio compartment. We also have used plywood plates with servo holes cut into them. Be sure the plywood is thick enough to cover the screw threads. If not, glue on another layer of wood. With either of these arrangements do not rely on butt glue joints. Add pieces of sheet wood above, below, in front of and behind the plywood edges where they butt against the compartment sides. We have experienced failures with plastic servo trays sometimes included in radio sets. A plastic tray carrying the weight of four servos but mounted in the aircraft with only six screws near the edge of the tray will break at the edge holes during a rough landing. This type of failure is particularly deceptive, as the controls may appear to be normal on the ground. Servos come with rubber grommets which fit into the mounting lugs to provide vibration isolation. To function properly brass ferrules are inserted into the grommets. The ferule controls the amount of compression applied to the grommet by the mounting screw. When the screw is tightened until it contacts the ferrule, the correct compression is attained. The ferrule must be inserted from the bottom so that its flange contacts the mounting surface. If inserted in the other direction the flange will be under the screw head (not needed) and the sharp end of the ferrule may cut into the mounting plate causing excess grommet compression. Position the servo so that it contacts the airplane only through the rubber grommet.In general it is better to position the servo with its long axis fore and aft. If mounted across the airplane, pushrod pressure will cause rocking. This consideration is less important for throttle servos.from The Fly Paper James Pemne, editor via The Digital Dope Sheet, Paul Yuhas, editor Box J56, Dunlo PA 15930
G.V.A.M. Newsletter
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