C85-12F exhaust needed

[Thrashnic]

I am currently performing my annual on N95307 she is a BC12D-85, and low and behold I find cracks all over the heat muff / exchanger and I find cracks on the exhaust by the #3 cylinder. I have talked to a welder and he thinks that the exhaust cannot be repaired, and that if he did repair it that the other parts of the exhaust will just break as well. So I am currently looking for new or new used serviceable replacement exhaust and heat muff / exchanger, I am willing to convert to the Luscombe duel type exhaust or stay with the standard exhaust. Any suggestions as to where and what should be purchase would be great, as always cost is a big consideration.

[barnstmr]

Re: C85-12F exhaust needed

Split header Luscombe 8E parts list attached. Installation data and Approval are $250 from us at C.A.P. Sources of new parts: Univair, Wag Aero, Classic Aero. We recommend you discuss with them to make sure they have the welded tabs for the heater shrouds. (Carb heat and Cabin heat) - See parts list below.

Split Header - Aeronca Champ 7AC style. Check with Wag Aero or Univair.

More heat - If you need the best Cabin Heat performance available, I suggest you go with the Hanlon Wilson style. There are three different types of HW exhaust.
(1) Cessna 150, surplus parts available.
(2) Aeronca 7EC, Similar to 150 but tucks in tighter to engine. Might be available from American Champion. Try Wall Colmonoy and AWI for parts. See parts list below.
(3) Luscombe 8F. Most Rare.... try Classic Aero for parts.

There are trade-offs. The Cessna and Aeronca systems are not going to fit inside your cowling without adding some significant holes and adding a bulge-fairing. Aeronca fits better than Cessna. Not the greatest looking, but the Exhaust system works great.

WE CAN PROVIDE DRAWINGS AND APPROVAL FOR ALL OPTIONS ABOVE.

[astjp2]

Re: C85-12F exhaust needed

I have the aeronca, lots of good heat, just no insulation in the cockpit to keep it in....Tim

Got mine from Dawley http://www.dawleyaviation.com/

[TimHicks]

Re: C85-12F exhaust needed

For my C85, I modified a TCraft exhaust for an A65 by adding a ring of material.

[Robert Lees]

Re: C85-12F exhaust needed

I did exactly the came as Tim Hicks when I changed from A65 to C85; never been a problem (but it was built properly in stainless in the first place for my A-65) Back then, in the UK, in 1994, came to about $1000 (without the aluminium heat muff).

I understand that in FAA-land, an exhaust can be "repaired" quite easily, but perhaps at a cost.

Rob

[Guest]

Re: C85-12F exhaust needed

For my C85, I modified a TCraft exhaust for an A65 by adding a ring of material.

Nice welding job!

[PA1195]

Re: C85-12F exhaust needed

My approved C-150 exhaust on a -4 mount requires no cowl bulge-fairings. Atlee Dodge modified the header stacks to bend the mufflers closer to the engine, probably not for free however.

Gary

[barnstmr]

Re: C85-12F exhaust needed

Everyone has different needs. Cross-over exhaust sure sounds sweet on these little Continentals. Split exhaust makes sense for those with -12 engine and want to use the generator/alternator drive. In alaska, the Hanlon-Wilson style seems to be the favorite because those muffler muffs sure put out a lot of carb. heat and cabin heat.

[PA1195]

Re: C85-12F exhaust needed

"In alaska, the Hanlon-Wilson style seems to be the favorite because those muffler muffs sure put out a lot of carb. heat and cabin heat"

Especially if wrapped with an annealed door pull spring tied over the can under the shroud.

Gary

[cvavon]

Re: C85-12F exhaust needed

I used terrys paper work it was very well written and complete and got my exhaust from Doug Coombs from the luscombe foundation as he has the tabs Terry talked about.