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Engine basics => Engine set up tips => Topic started by: Elwyn Aud on April 11, 2009, 05:22:11 PM

Title: Not a model engine but still interesting
Post by: Elwyn Aud on April 11, 2009, 05:22:11 PM

Reverse engineering a WW1 rotary engine.
http://thevintageaviator.co.nz/projects/oberursel-engine/oberursel-ur-ii-rotary-engine-build-history

Title: Re: Not a model engine but still interesting
Post by: Dennis Vander Kuur on April 15, 2009, 02:28:43 PM

Elwyn,
Thanks for the link. It is a very interesting site. I especially enjoyed the video of them running up the rotary engine. H^^
DennisV

Title: Re: Not a model engine but still interesting
Post by: Mike Scholtes on April 17, 2009, 12:10:58 AM

20 or 30 years ago there was an original 1916 or thereabouts Henriot biplane with a Le Rhone rotary that would come in to the Watsonville CA airshow. Hearing that engine run up was like nothing else I have heard. I spoke to the pilot who said there was no throttle as such, just a kill switch that would shut down the ignition momentarily, giving the characteristic vroom-vroom of these engines. Very noticeable on landing approach.

Imagine the cost of building the from-scratch Oberursel in the film! The replica Wright engine for the 2003 attempt to fly a Wright Flyer cost over $100,000 to build and the rotary is far more complex. Yikes!

Title: Re: Not a model engine but still interesting
Post by: Dave Adamisin on April 17, 2009, 07:16:01 PM

Great stuff Elwyn. It's as much a model engine as anthing we use. Heck they even built it....