O.S. NSU Wankel Rotary Engine Powered Vintage Flying Wing. Assembly and Flight by NightFlyyer.

SEE Specs, History, Price and Links below. The Rotary Wankel Engine's outstanding performance helped me decide what engine to put in Donovan's Combat Clipper. This is the old fashioned way of making airplanes, so enjoy the build, the engine run, and the Flight.

Back in the 60's John Donovan began manufacturing and selling the Combat Clipper flying wing. It was mostly used for combat flying. Well I got one last year and decided to build it with the Graupner NSU Wankel. When I lived in Southern California, I had the Wankel on my Red Pylon Racer with V tail. So when it came time to build this Clipper, I decided that this was the engine to put on it. It is a real screamer, uses lots of fuel, but is almost vibration free. Here are some more facts on the Wankel.

The Wankel engine is a type of internal combustion engine using a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons.
It's four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that is similar in shape to a Reuleaux triangle but with sides that are somewhat flatter. This design delivers smooth high-rpm power from a compact size. It is the only internal combustion engine invented in the twentieth century to go into production.[1] Since its introduction the engine has been commonly considered rotary engine, though this name is also applied to several completely different designs.

The engine was invented by German engineer Felix Wankel. He received his first patent for the engine in 1929, began development in the early 1950s at NSU Motorenwerke AG (NSU), and completed a working prototype in 1957 NSU then licensed the concept to companies around the world, which have continued to improve the design.

Thanks to their compact design, Wankel rotary engines have been installed in a variety of vehicles and devices such as automobiles (including racing cars), along with aircraft, go-karts, personal water craft, chain saws, and auxiliary power units. The most extensive automotive use of the Wankel engine has been by the Japanese company Mazda.

Felix Heinrich Wankel (August 13, 1902, Lahr, Baden -- October 9, 1988) was a German mechanical engineer and inventor after whom the Wankel engine was named. He is the only twentieth century engineer to have designed an internal combustion engine which went into production

On license with NSU /Wankel, O.S. Engines manufactures the 49-PI (Newer Version) to extremely close tolerances.

They are excellent quality and at $699 list, (Tower sells them for $450), they surely should be. Mine was much less, back in the day....

Compact, quiet and almost vibration-free!

The Newer 49-PI is ideal for boosting power in small-scale planes, reducing weight in mid-size craft and for dependable, user-friendly service in any application.

· Two needle bearings, a ball bearing and rotary design's inherent smoothness make it a very quiet and virtually vibration-free option in power.
· Venturi offers more power by increasing airflow into the carburetor.
· Muffler can be angled in different directions for increased mounting versatility.
Mine can't!

SPECIFICATIONS:
Stock Number: OSMG1401
Displacement: 0.30 cu in (4.97 cc)
Practical rpm: 2,500-18,000 to 20,000
Output: 1.27 hp @ 17,000 rpm
Weight: 11.8 oz (335 g)
Includes: glow plug, muffler
Recommended props: 9x6, 9x7, 10x4, 10x5, 10x6, 11x4, 11x5


Thanks so kindly for watching.

Please take a moment to subscribe and also to rate this video.

Best Regards,
Dave Herbert
Academy of Model Aeronautics # 8221
Contest Director, Leader Member, Scientific division.

Here are a few links.

Donovan's Hobby and SCUBA center in Sioux Falls, South Dakota
http://www.donovanshsc.com

Tower Hobbies for Wankel Engines
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXPVE3

NitroPlanes
http://www.jdoqocy.com/click-3235026-10507606

Xheli Helicopters
http://www.dpbolvw.net/click-3235026-10471876

HobbyPartz
http://www.hobbypartz.com

Academy of Model Aeronautics (AMA)
http://www.modelaircraft.org

Disney Toy Store
http://www.dpbolvw.net/d7108p-85-7NRQRTOQUNPOUWQPQX

WillyGoat Toy store
http://www.tkqlhce.com/click-3235026-10525785

RC-Television shows
http://www.rc-television.org

Category:

Science & Technology

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[EhnTeePee]

That's a sweet flyer ya got there buddy.

Planes with 'Elevevons' are not for us beginners are they?

Atleast, not at the level of vehicle you built?

I love the wankel and feel like although it is used like you said, you just don't here much about them anymore.

Cheers.

[NightFlyyer]

@EhnTeePee Thanks very much. Elevon planes fly pretty similar. It just take more getting used to looking at it and knowing where you are when flying a wing. Wankels are great but pretty pricey. $699 Retail, but Tower hobbies sells them new for $450. That is probably a factor but in a Twin warbird, they fit under the cowls nicely.

[Sowerbylads]

One word, impressive!

Thanks for sharing.

[NightFlyyer]

@Sowerbylads Your very kind. Thank you.

[FAZER00432]

Great video i love watching you do what you do. I Also use Ultra cote for my planes. it lasts long and is very durable.

[NightFlyyer]

@FAZER00432 Thanks very kindly for your comments. I appreciate it. I surely like the Ultracoat over the Monocote for sure too now that I tried it.

[SuperMillerman10]

is there anywhere i can pick one of these up???

[scottieh83]

well Dave, bank and yank only on this one!!! lol

[Acornoa]

phillips? everyone knows robertson is the easiest

[1ramus1]

Amazing NSU Wankel Rotary Engine, good job.

[CBMXX]

excellent, thanks for sharing

[EnterpriseXI]

hi Dave. i got a problem with the monicoat on my Alpha 40 trainer. on the wings, the monacoat is pealing off at the egiss. what can i do?

[SoCalsandman780]

Absolutely fantastic! I was already thinking that was what I was going to say in the comments before I heard you utter those very words at the end of the video. Looks like we're on the same page! That was just absolutely awesome to watch! Nice job sir! Here's to Mr. Donavan as well!

[Tinytacohead]

Great video as always. :-) When you picture the internals of a Wankel it's a bit misleading though, since you don't specify that you've actually shown the innards of a full-size rotary, (rather than the mighty O.S). As a real RX-7 owner & avid RC'er, I had to do a double-take, haha.

[bladecppro26]

true craftsmanship and amazing little engine, i am an auto technician and have built a cupped rotary Mazda engines and really love the mechanical genius about the engines, never knew that miniature ones exist wow! love all you videos and builds and you have once again showed me something that i didnt know 10 min ago thank you for you time effort and devotion that goes in to this.

[timothyrbates79]

awesome.. your videos and builds always intrigues me ;)