The HP VT21 4-stroke RC model plane engine

This is a 30 year-old 4-stroke engine which has an Aspin Rotary Valve in the head rather than more conventional poppet valves and camshaft. These engines are very weak but also amazingly quiet. The airframe is a very old design from the 1960s I think and it weighs a ton. Flying this engine/airframe combination requires a *very* light touch on the sticks because it'll stall in an instant if you attempt to slow it up or use just a fraction too much elevator. Still, it makes a nice change from grossly overpowered trainers, 3D machines and pulsejet-powered RC models.

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A large turboprop-powered Das Ugly Stik RC model airplane
This unique turpoprop powered Ugly Stik was seen at the 2011 ANZAC jet rally in Tokoroa New Zealand. This was only its second flight. Something nicely different to all the other turbine-powered jet models in the sky at that event.

Starting and Running The ENYA 46 4C Model Airplane Engine
Designed and manufactured in Japan Circa 1985. Smooth running and capable of swinging a big prop for a 7.5 cc engine.. For more information on my old engines, visit my Blog at: Or for other aircraft related musings,don't forget to visit my other Blogs at::

Best of Biggest RC 2017
This video is about Biggest RC trucks, rc machines, rc plane, rc helicpoter, rc tank, Best of Truck, RC volvo, man, Liebherr. If you wanna see Best of RC 2017 watch this video and if you like it hit the like button. We do NOT own the video materials and all credits belong to respectful owners. In case of copyright issues, please contact us immediately for further credits or clip delete. DISCLAIMER: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing." The materials are used for illustrative and exemplification reasons, also quoting in order to recombine elements to make a new work.

Kalt .45 4 Stroke Engine is Antique. Let's run it.
One of the first 4 Strokes to hit the market in the early '80s was this Kalt .45. It was manufactured by Kalt Sangyo of Tokyo, Japan and was one of my most reliable and greatest flying engines for my planes. It needed no muffler and used no or low nitro content fuel to run. I decided to run it for all of you to see and here. Thanks for watching.