You want the air to flow down through the cylinder fins. It's not an easy journey so if there are places air can find to escape, it will and that can defeat the purpose.
So when the air pressure pushes down on a baffling sealer, the sealer should come in contact with a hard surface not allowing air to escape there, but rather forcing it to escape through the fins thus cooling the engine. We're lucky because that escaping air can travel out through the back of the engine cowling. There's a lot of study regarding the drag caused by the air captured inside the cowling (look at LoPresti's and Cirrus cowl designs) but that's a discussion for folks in the know. ----- Original Message ----- From: Glen Davis To: [email protected] Sent: Friday, July 18, 2008 9:01 PM Subject: [ercoupe-tech] correct baffling position Gang It is my belief that the rubber baffling material that is on the right and left sides of the cylinders should be in the "up" position, forming a tight seal of air over the tops of the cylinders. I friend told me this is incorrect, it should be bent in the "down" position. This doesn't seem right to me as with it bent down, the air will have an area to escape, down toward the manifolds. I believe that the left and right cowling, when closed, should touch the baffling, creating the seal. Who is correct? Glen Glen Davis 917 297 1111 www.ishootpictures.com www.ercoupepilot.com
