Return-Path: Received: from [64.45.219.227] (account ) by logan.com (CommuniGate Pro WebUser 4.0) with HTTP id 1840479 for ; Sat, 19 Oct 2002 23:31:13 -0400 From: "Marvin Kaye" Subject: Re: [FlyRotary] Re: EWP Tech Data Take 1,000,000 ... To: flyrotary X-Mailer: CommuniGate Pro Web Mailer v.4.0 Date: Sat, 19 Oct 2002 23:31:13 -0400 Message-ID: In-Reply-To: <3DB0AE15.DEA771FE@starband.net> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for Jim Sower : <... spare pump could be used and still be lighter than the mechanical pump ...> How about a 2-stage system. A small pump, say where the coolant enters the block from the radiators that just pumps maybe 30% - 40% of what is required, but would be adequate to get you on the ground in case of a main pump failure. This "background" pump would work all the time (except perhaps during warm-up) and just be ON all the time. The "Main" pump would be controlled by coolant temperature exiting the block enroute to the radiators. It would not have to be as big as if it was the only one. Just a theory .... Jim S.