RCU Forums - regarding a Baffle

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rcinspired

06-28-2011 05:24 PM

regarding a Baffle

<div>hello,</div><div>i have a yak 54 and need to create a baffle using 1/8 plywood. What about the bottom of the cowl. Do i leave it as open as possible or do i close off everything except below the cylinder?</div><div>thanks</div>

LesUyeda

06-29-2011 06:21 AM

RE: regarding a Baffle

You want to ensure that the air exit area is larger than the inlet, so that you do not "pack" air in the cavity. Exit larger than inlet will cuase a negative pressure at the inlet and "suck" air into the engine cavity.

Les

dredhea

06-29-2011 07:02 AM

RE: regarding a Baffle

Quote:

ORIGINAL: LesUyeda

You want to ensure that the air exit area is larger than the inlet, so that you do not ''pack'' air in the cavity. Exit larger than inlet will cuase a negative pressure at the inlet and ''suck'' air into the engine cavity.

Les

To expand on this, the exit area should be at least twice the size of the inlet.

Jezmo

06-29-2011 12:55 PM

RE: regarding a Baffle

both are excellent advice.

rcinspired

06-29-2011 06:50 PM

RE: regarding a Baffle

thank you very much

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