Recent content by Monty

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  1. Monty

    Experimental Pilots, How do you handle insurance? (Especially for non-certified engines)

    Fly naked for 5 hrs time in type at a grass field with nothing around. I had to get 5 hrs in my single seat biplane before the insurance (liability only) would cover me. I don't even have ground not in motion anymore. The only thing of value is the engine anyway. I have no idea how anyone...
  2. Monty

    Aixro XP40 engine ?

    Nice engines, a bit expensive for what they are. I think Renntech is still the US dealer. The engines are used in cart racing, so you should be able to find parts.
  3. Monty

    New Alice Starts Taxi Testing

  4. Monty

    New Alice Starts Taxi Testing

    Oh, and ask any of them about density that is orders of magnitude worse really impacts this requirement. If you have an hr of endurace...a 30 min reserve is debilitating. For hydrocarbon big deal.
  5. Monty

    New Alice Starts Taxi Testing

    Do you really think you can charge batteries faster than fill a fuel tank practically??? really?
  6. Monty

    New Alice Starts Taxi Testing

    I'm not sure exactly what you are talking about here. I work with batteries and fuel.
  7. Monty

    New Alice Starts Taxi Testing

    I'll also say this about the original design of this aircraft. It's much more insidious than a graphic designer...The design was obviously driven by a theoretical absolutist academic. Someone I have no time for. The tell tale signs are the following: The wing tip engines are there to counteract...
  8. Monty

    New Alice Starts Taxi Testing

    Breguet Range Equation does not care how the aircraft is powered. Apparently none of the electric aviation enthusiasts know about this. Batteries in the conventional sense will never be as efficient as fuel and air for aircraft. No way around this. basic physics. Makes it hard for me to take...
  9. Monty

    New Alice Starts Taxi Testing

    I was recently at an expo involving electric flight. These people don't even understand how airplanes work. One company in particular was trying to replace the Cessna Caravan. The thing had 7K lbs of batteries. No ability to trade fuel for cargo, and no range. Recharging takes overnight. Forget...
  10. Monty

    New Alice Starts Taxi Testing

    Uhhh....I'm intimately involved in startups. There is a lot of dumb money, and most of it seems to find it's way into the aviation space for some reason. Aviation is where capital goes to die. Including mine.
  11. Monty

    Turbocharged engine options for a 2 seater - what would you consider?

    Not that rich for a boosted engine. I don't think it's about cooling in a liquid cooled engine, it's about detonation margin on boost. 100LL may help, but requires dyno time to test.
  12. Monty

    What happened to the Smith Miniplane DSA-1 ??

    Word has it the Smith Miniplane lands so hot and blind, no one can find it anymore.
  13. Monty

    Cowl Exit Streamlining

    Ejectors/Augmentors usually help ground and climb cooling, but hurt top speed. There are several good NACA papers out there. A fairing and nice rounded edge to a sloped exit ramp, with a variable exit flap (or two on either side) are what you need. Easier said than done...
  14. Monty

    New Alice Starts Taxi Testing

    Not enough elevator authority to rotate until 300 mph....
  15. Monty

    New Alice Starts Taxi Testing

    That doesn't have anything to do with the Htail.....and the props are just as likely to fail as any other prop. Controllers fail too. Short coupled design with a long forward fuselage. Engine nacelles and wing wake, likely to block both tail surfaces at high alpha.....Tail too small....