Ed wrote: I was told, do not remove the hose from the baffle to the muff. The airflow through the muff must continue or the manifold pipe inside the muff will have no airflow and will soften and maybe melt through. My heat box leaks, so in the summer I remove the tubing from the heat exchanger to the heat box. I was thinking about using a plug on the hole in the baffling that supplies the ram air to the cabin heat. This would stop the heat coming into the cabin and also aid in cooling the engine. I haven't done that yet because I have heard the same thing that Ed stated above. But when you think about it, it is no different than flying with the cabin heat turned off. That part of the exhaust pipe is not receiving any airflow at that time. Just my thoughts. Have anyone ever seen the exhaust pipe inside a heat baffle melt on an airplane?
Dan B N93805 From: Ed Burkhead <[email protected]> Subject: RE: [ercoupe-tech] Re: Carb heat/Cabin Heat To: [email protected], "ety" <[email protected]> Date: Tuesday, July 21, 2009, 12:06 PM Also, be aware that a lot of owners remove the cabin heat scat hose from the muff to the firewall during the summer. This reduces the blast of hot air on the flapper box and firewall. Since some flapper boxes leak, this keeps the cabin cooler in the summer. I was told, do not remove the hose from the baffle to the muff. The airflow through the muff must continue or the manifold pipe inside the muff will have no airflow and will soften and maybe melt through. Don’t forget to reinstall it in the fall. I’m not a mechanic of any kind. Consult on this with your mechanic! Ed
