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BUILDER HINTS L/E (LongEZ) V/E (VariEze)
(From CP36, Page 6, April, 1983)
V/E & L/E Fuel tank vents icing over none of us should fly
into icing conditions. However, if it should happen to you inadvertently, it is possible
to have your fuel tank vents clogged by impact or rhime ice. This could cause your engine
to quit! The remedy is to drill a #50 hole on the aft side of the vent tube per sketch.
V/E & L/E John Sheffles (Long-EZ N682S) reports that he recently was able to get his engine checked for vibration on a helicopter balancer. At 2000 RPM his Long-EZ had a reading of 3, about average for a light plane. By adding a nut and bolt of the correct weight at the proper location on the starter ring gear, this reading was reduced to 0.5! John reports a noticeably smoother and quieter airplane. Any FBD with a helicopter rotor balancer should be able to do this, or stop by Great Falls airport, In Montana. "Rocky Mountain Air" can do the job for a reasonable price. All it takes is a couple of hours sounds like a great suggestion John, thanks.
V/E & L/E Phil Cornelius turned in this neat method of tracing a fuel tank leak. This assumes you have the fuel cap holes cut and have a small enough leak not to be detectable using soapy water. Push an ammonia soaked rag into the tank and seal the caps. (Phil bondoed an aluminum cover over the hole). Then soak a rag in Phenolphthalein (C20 H14 O4) and hold it against the outside of the tank moving it around until you see a purple spot. This purple spot is your pinhole leak! Pop off the aluminum cap covers, remove the ammonia rag and vacuum the vapors out of the tank. Wipe down the outside of the strake with soap and water. You should be able to scrounge a small baby food jars worth of C20 H14 O4 from your local high school or college chemistry teacher. If its in powder form, use alcohol to dissolve it into solution. CAUTION phenolphthalein is hazardous if it comes In contact with your bare skin. Use only with rubber gloves.
V/E & L/E Gear up warning systems. It has come to our attention
that several builders have installed the gear position micro switch so that it is
contacted with the gear in the up position. This is totally unacceptable and is cause to
ground your EZ until the switch is mounted such that the gear is down and fully locked
when it contacts the switch. This is very important. You will have no warning if the arm
has backed off from its safe over-center position.