Hempel 50% Edge, v1

Discussion in 'Plane Registry' started by Tired Old Man, May 30, 2011.

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  1. Jun 1, 2011 #21

    Tired Old Man

    Tired Old Man

    Tired Old Man

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    Never knew about that one. Thanks!
     
  2. Jun 1, 2011 #22

    Showtime

    Showtime

    Showtime

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    I had a 32x10 that they made and it blew apart in the air. It had wood nots in it...
     
  3. Jun 1, 2011 #23

    Bunky f. knuckle

    Bunky f. knuckle

    Bunky f. knuckle

    Cover shot, MA 10/09!!!

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    I know John Light used them for for a while on the 3w 240' s he flew. Sorry to hear you had probs, Show.
     
  4. Jun 1, 2011 #24

    Mithrandir

    Mithrandir

    Mithrandir

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    I don't understand why you can't place the exhaust ports on the same side as the carb???
     
  5. Jun 1, 2011 #25

    Tired Old Man

    Tired Old Man

    Tired Old Man

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    The cylinders have boost ports molded into them that mate with the case. iI you rotate the cylinders you lose the portion of the case that mates the boost port with the cylinder. Symmetry only on three sides.

    The cylinders are quite unusual in port design. Although I have not gotten too deeply into them yet it appears there is some type of porting that opens up on and into the sides of the exhaust ports.

    Edit,

    I got inside the engine and it's confirmed. The existing cylinders cannot be rotated to relocate the exhaust ports. I'm loathe to post any pictures of inside the cylinders. The Chinese can buy their own damn engine if they want to copy something. The exhaust ports are indeed quite interesting, having what at first glance appears to be exhaust gas accellerators. That's as descriptive as I'm going to be on that subject.

    The pistons are so big you would think they came from an early VW.
     
    Last edited: Jun 1, 2011

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