Descriptions:

FULL ALUMINUM RC ZENAIR 750

Beschreibung zum Video:
Peter Graham flies his beautiful Zenair 750 at the Joe Nall Week 2019

Model data:
1/3 Scale
Span: 118.5″
Weight: 30 lbs
Engine: Saito 300 Twin

Robert Johnson built it of 6061T aluminum
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Vollständiger Text aus dem Video: FULL ALUMINUM RC ZENAIR 750
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27 Comments

  1. Gee the real one gets off quicker😂 It amazes me people build these scale toy planes yet destroy the effect by having no driver in them??

  2. Great plane BUT: STOL it's not. Even with that extra lift slats, didn't see any flaps, and the aluminum wrap, took that plane way to long to get off the ground.

    I suspect the aluminum wrap is the culprit and lack of flaps.

  3. For those commenting about the lack of STOL capability in the model, keep in mind the difference in the Reynolds Numbers between this and the full size aircraft. A smaller wing needs to fly at a RELATIVELY faster speed (speed vs chord) to produce an equivalent effective lift.
    Then there is the trick of perspective. If you ever watch a 747 in flight and wonder how it stays airborne because it LOOKS like it is flying so SLOW. A model has the opposite problem. Models appear to fly faster because they cover many more times their length per second, even if the actual speed may be slower.

  4. I like it. Aluminum ensures you will win any arguments in the air. Power to weight ratio doesn't seem ideal though.

  5. A few years ago I built a mm perfect 42/50 850 Kv electric powered Zenair CH 701 1/5 th scale as a tribute to Scott Ehnie's turboprop CH 701. The model shown in the video is not to scale! The engine cowling is too long. The stabiliser does not have the inverted airfoil but a semi symmetrical profile and the door opening is not correct. The leading edge slats seem to be oversized and not fitted/positioned correctly as per original design and not to forget that the windscreen has too much rake. You get scale and semi-scale and I'm sorry to say the model featured is semi-scale. A nice effort but does not give me the wow factor. A pity I cannot post pictures of my Zenair CH 701 here.

  6. Looks just right but can tell that it's HEAVY,, the take off and landing roll were far longer than scale from the full size, would love to know how the weight and wing loading compares to the scale of the full size

  7. Its funny that its modeled after STOL, when made to scale out of metal its take-off distance is among the worst in that event.

    I wonder if a all metal scale version of a modern fighter jet would perform….Could it even achieve positive lift with any scale turbine…

Comments are closed.