I have a 4" butterfly valve for air supply to the oil cooler. I need a source for a 4" flange to attach to the back of the engine baffling. Spuce and Wicks have sizes to 3".
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Looking for 4" aluminum duct flange
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If you have any fiberglass cloth hanging around you can make a flange. I put in a 4 valve bypassing my baffling to try to get my Lancair engine temps above 300 in cruise. I used a roll of 3” cloth and sat my valve on sheet of plastic on a table and waxed the base. Then wet out enough cloth to make 4 laps around the circumference and applied with half the cloth on the valve and half on the plastic as a flange. After it cured i pop riveted it in place.
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My baffle kit came with one. Are you sure you don't have one on a shelf somewhere? Van's P/N VA-187
20230626_155722.jpgLast edited by alaskabearhawk; 06-26-2023, 08:02 PM.
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Ask around among the Vans builders and see if anyone has one sitting on the shelf without immediate need, maybe they can loan you theirs. In return you can carry their luggage to Oshkosh, so that they don't have to spend the whole week with a toothbrush and one pair of skivvies.Originally posted by rodsmith View PostOrdered the VA-187, of course it is on backorder!
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I’m using the Air FlowN678C
https://eaabuilderslog.org/?blprojec...=7pfctcIVW&add
Revo Sunglasses Ambassador
https://www.youtube.com/channel/UCQ0...tBJLdV8HB_jSIA
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