Bob Kreplin's Trimotor First Flights

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Uploaded by on Sep 26, 2007

The first flight tests of Bob Kreplin's 73 inch span electric RC Ford trimotor model. Museum scale model took seven years to build. First flights were in Virginia, USA

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Uploader Comments (BillLumix)

  • Bob vacuum formed sheet styrene over home-made forms to create the skin. Getting all the joints to line up took a huge amount of time, but the effect was realistic even viewed from up close.

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  • Beautiful airplane!! Thanks for sharing.

  • Bob,

    I love the detail and the resolve that you put into that model. Was this designed all from scratch? I based mine on a kit (Kavan) and got a fairly semi-scale look to it. (see video below). I wrote an article about this in one of the upcoming model magazines. Let me know if you are interested. That corrugated look is something special!

    Have you solved the engine dummy problem, I might be able to help you out. I am just designing a WASP dummy on CAD and plan to have it rapid prototyped.

  • I needs 1 o' dems

  • Bob replies: Ford Tri-motor

    Motors, controllers, batteres cost about $630. Receiver, servos, other electronics, probably cost $180. I built it over a period of 8 years and didnt keep track of the time or the cost of other components and equipment. Using Channel19 .

  • Nice model, i met a guy scratch building a tri motor for top gun....12' wingspan with real corrugated metal.. it was cool

  • Wow! That's one STOL airplane! (And a beautiful job.)

    What material was used to provide the corrugated surface?

  • Nice job. That's a good looking airplane!

  • Nice looking plane. Electric make life with multi engines more hassle free.

    keep up the good work.

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