31.12.09: Sam and I have been hang testing our home-made kick-in straps today to avoid messing around getting seating once in flight. They work a treat and so that’s on less thing to worry about the next time we’re out.
Archive for December, 2009
31.12.09: A new development has started,…………. and stopped due to funds issue. It is to make a paramotor unit with the heavier GX420 engine, again as a direct drive motor. Power as standard is 15hp at 3600rpm. A few mods will get this upto 20hp at the same revs. Free-flow air filter, exhaust, alloy flywheel and milled cylinder head. If power is still a little low then a bored carb or a Mikuni carb should do the trick. I was at first considering fitting a Konig/CRE SC-430 radial engine prop. 42″ (107cm) which develops upto 65kg thrust at 4000rpm/20-22hp. Now I’m considering a 44″ GSC ground adjustable prop as a friend has offered his for testing. Peak rpm would be lower than the Konig type prop and be roughly around 3600rpm.
31.12.09: On Saturday the 12th of this month, Sam had his longest motor flight to date. Successful launch into a light NE wind and climbed for 5 minutes before carb icing affected performance. After a minute of ‘rough’ full throttle, Sam eased off and headed back. Wind was stronger at altitude and Sam’s progress into wind was slow. Calculated height gained over the 5 minute climb to roughly 380ft, this equates to 76ft/min climb rate. I had two attempts at getting airborne but rotor and a tight launch area resulted in both attempts being aborted.