ORIGINAL: schroedm
Edgar, if John says 19mm works OK on his Pegasus but you think it's too close, what distance would you recommend?
I'm running my Artes Rhino (160 N) at about 25mm to 30mm. Double walled pipe.
Sorry don't have direct experience with your engine or plane. I believe in the past people used to put the engine tail pipe into the exhaust pipe anyway, so tha's why I think it should be ok.
Good luck,
Edgar