Pixleyad Posted March 31 Report Posted March 31 Does anyone know why the cooling shroud is generally not installed on a Mooney? I realize because it doesn’t fit due to baffling design. Is anyone concerned about excess heat on the Alternator? Quote
EricJ Posted March 31 Report Posted March 31 On a J model the engine baffling routes high pressure air to the front of the alternator, and is open to the alternator core. In other words, the high pressure air will naturally flow through the alternator rotor, so there may be no benefit to any additional shrouding. This is visible through the cowl inlet without removing the cowl. A normal preflight includes reaching in there to check the belt tension, so it's easy to see. 2 Quote
N201MKTurbo Posted March 31 Report Posted March 31 On my old M20F the alternator had a cooling shroud and a fan. The tube from the shroud went to the front of the cowl. The theory is that the air would go in the back and then out the fan. In the J the alternator has no fan or shroud. The front of the alternator is exposed to upper cowl pressure. The rear of the alternator dumps into the lower cowl. Because of the pressure differential, it will cause air to flow from the front of the alternator to the back and out into the lower cowl. 2 Quote
Pixleyad Posted April 1 Author Report Posted April 1 Thank you! That makes sense - it doesn’t look like it in the higher pressure zone because it’s low but it absolutely is. Thanks again. Quote
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