Wittaker "Firefly" 0.46 Glow Engine

[BillTodd]

Jason,

Where did you get that 3D pdf application?

Bill

[Jasonb]

I don't know what was used to create it but all the drawings and that PDF are here.

http://homepage.ntlworld.com/glenn.royds/RCM&E/

Glenn Royds who draw them does post on Model Engineer Forum you could contact him there.

J

[njl]

Hi Jason,

A lovely job you have done on building this engine. Have you flown it in a model yet? If so how does it compare performance wise to say an OS LA 46? I fly rc planes and I have been thinking about building one of these if it performs well enough to use in a model. 

A friend of mine has recently scrapped and OS AX 55 because the liner is shot and a new OS liner and piston set is too expensive relative to a new engine for him to consider it a viable repair option, so I have his worn out engine and am going to try an experiment and use the firefly materials spec of en8 and cast iron to build a new liner and piston set and see if I can make a viable engine with it.

Nick

[Jasonb]

I don't intend to fly mine but apparently the ones that have been flown perform well, the guy who designed it writes for RCM&E and has in in one of his planes.

<a href="https://www.youtube.com/watch?v=wUk63Uxy76I" target="_blank">http://www.youtube.com/watch?v=wUk63Uxy76I</a>

[ScroungerLee]

Great engine.  I like the video, especially the part where the clamp falls off 

Lee