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  1. M

    Design at new version of the Fournier Motor Glider

    I'm 6 ft 4", and I can manage with the available space, not much free head room, but I can manage to close the cabin with headset on
  2. M

    Design at new version of the Fournier Motor Glider

    Yes, the cylinders have the same outer dimensions, cylinder heads were machined 1mm, to have the right compression, I also added an oil cooler to handle a slightly increased heat loss
  3. M

    Design at new version of the Fournier Motor Glider

    I'm happy to own a RF-4, I bought the wreck from our club 20003, and spent some 10 years to rebuild the plane, broken wing and wing connection to fuselage need to be repaired among a lot of smaller damages, also the engine was modified to 1400cc. Rf-4 is not a real motor glider, but it's really...
  4. M

    Why battery-powered aircraft will never have significant range

    Topspeed and Speedboat are the very same guy, as you can see from his signature link
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