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Bob,
Good question! The only thing that I can think of is that the valve that opens on the low pressure side when the gear lever is put into the up position, doesn't stay open.
I have plenty of experience to know that the low pressure side somehow builds up pressure when I fly high but I don't know why.
Opening the dump valve absolutely reliefs the pressure in the low side.
Lorn
From: "Bob B." <rbelshe@comcast.net>
I don't understand this analysis. If the system pressure is high enough to hold both pressure switches open, how would opening the dump valve release the excess pressure?
Chris Z, your opinion?
Bob Belshe
Moraga, CA
Lancair 235/320
http://home.comcast.net/~rbelshe/
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-345-0500, mailto:lorn@dynacomm.ws
LNC2, FB90/92, O-320-D1F, 1,300 hrs, N31161, Y47, SE Michigan
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