flyrotary@lancaironline.net Mailing List Archive

Michael,

Good idea but it's very heavy way to go and expensive, the goal has always been to get a result with a lighter and cheaper unit. Bill Jepson and myself have come up with a design but it's still a bit heavy. I have been discussing exhausts with Francois and have offered the design to Mistral to try to see if it works - but it will always be a bit heavy (1.6mm mostly) - perhaps there's no getting away from that.

I haven't been in a hurry to finish it and it's been at the welders for some considerable time now, however I have taken that time to re-evaluate it. The recent Everett Hatch method put up by PL is a good idea to eliminate the problems associated by pipe to flange welding, but it may have some production issue and may have to be a stamped part.

George ( down under)

An open question to the collective knowledge of this group on the subject of exhaust systems.

Has anyone installed an exhaust with a manifold box like the original N/A 13B ?

In other words, what about building a box collector of similar dimensions to the original heavy cast iron unit on the N/A 13B but made out of say .120 thou SS ?

Would this help dampen the exhaust pulses ? Or are we just opening a whole new can of worms by going down that track?

I think it would leave some HP on the table but for someone like myself not seekeing any more than about 160 hp out of my application is it reasonable?

Michael in Maine

Falconar F12 at glacial pace.

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