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  1. Z

    Pietenpol

    It does look very nice, but such a long way from here! Let me consider it!
  2. Z

    Pietenpol

    Hi is this airplane still for sale? thanks, Jon
  3. Z

    Mechanical Fuel Pump Issue

    Thanks for your input guys, I'm wondering if there is a regulator that would work with a mechanical fuel pump.....most of the stuff I have seen is for an electric pump. If you know of a regulator with return that can regulate with a mechanical fuel pump and can get pressure down to 3.5psi I sure...
  4. Z

    Mechanical Fuel Pump Issue

    TFF, I think you got it, what I think I will try is tee off the fuel pump out line to a pilot controlled needle valve with the output of that going to the top of the tank. I could tweak the needle as required to set the pressure. thanks to all responders! Jon
  5. Z

    Mechanical Fuel Pump Issue

    Guys, thanks for your replys. Delta , I believe you are correct about 2different sizes of rod, the alternator being the shorter. I believe the the block is the same for both. 7psi is constant from idle to mid power, and I would rather not use a regulator or restrictor. Hot, I have seen numerous...
  6. Z

    Mechanical Fuel Pump Issue

    Guys, I have installed a mechanical fuel pump on my 37 hp half vw, on initial start the fuel pressure was over 7psi as measured at the carb, way over the 3- 3.5 I think I would like.I have started machining down the fuel pump pushrod length without any reduction of pressure noted yet and I find...
  7. Z

    Misc Homebuilt Aircraft Plans

    Are Piet plans still available? PM me thx . Zipperdu
  8. Z

    Half VW Static Thrust

    Thanks Dan, My main concern was take off performance at a 5 or 6000 ft density altitude. The current prop is a 60 and I think the vw uses 54 or so. Jon
  9. Z

    Half VW Static Thrust

    Hi guys, I have a Loehle Sport Parasol that I've flown on the Rotax 447, I am not really happy with the 2stroke (I like engines that have oil pressure gauges! It gives me one more thing to look at during flight) anyway I was looking at the Hummel engine, I think it looks pretty good but I have...
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