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) will tell me = the temp is going up, and I'll reduce power, or increase speed. =20 =20 One other possible benefit is more even flow through the cores when both pumps are on. Haven't I heard some of you say that you've had = difficulty getting the water to flow evenly though parallel cores? =20 =20 In my usual masochistic way, I offer this idea for your abuse, or is = that the other list :-) =20 Cheers, Rusty (learning more about exhaust every day) ------=_NextPart_000_0324_01C3C8CB.B4612ED0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Greetings,

As I continue = on the=20 painfully slow process of de-BUC-ing the plane, I'm looking into = plumbing=20 options for the EWP's. The Meziere adapter has two inlets, and one = outlet=20 to the engine. The plan is to run the one large outlet to a Y = splitter,=20 then to each evap core. Since there are two core outlets, two = EWP's, and=20 two inlets to the engine, it's mighty tempting to let each EWP handle = only one=20 core. It's certainly the simplest way to plumb it. BTW, I do = have=20 one way valves, so there will be no backflow through the pump that's=20 off.

In a way, this = makes sense=20 to me, because I can thermostatically control one of the pumps, and = leave=20 the other one on all the time. In normal cruise flight, cold = weather, and=20 certainly descent, one core will be enough. Eventually, I may = install an=20 effective cowl flap to cut drag at cruise, and the plumbing can = certainly be=20 re-worked if needed then, or I can just let both pumps run. The = worst case=20 situation is that one pump fails on climb, but the EM-2 (that Tracy is = still=20 adding features to <g>) will tell me the temp is going up, and = I'll reduce=20 power, or increase speed.

One other = possible benefit=20 is more even flow through the cores when both pumps are on. = Haven't=20 I heard some of you say that you've had difficulty getting the water to = flow=20 evenly though parallel cores?

In my usual = masochistic=20 way, I offer this idea for your abuse, or is that the other list=20 :-)

Cheers,

Rusty (learning = more about=20 exhaust every day)

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