jofarr, soddy tn http://www.csr-performance.com/=20 I have a potential safety question with using an electric pump, = unless the engine is using a magneto. The ignition system runs on battery/alternator power. If it and the = FI are run by an ECU, it too needs power. The fuel pumps need = electricity. There are other electric hungry mechanism that need power. In an alternator/battery failure (short of having dual alt and batt) = to have a water pump sucking 5 or more amps of power, this significantly = shortens the available flight time before engine stoppage. If the engine is magnitoed, when the electrons disappear and the = pump stops, all that will happen is that the engine will fry---- The = result will be the same Rich ------=_NextPart_000_0076_01C6A588.3F0CDA20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ed,

What is a Pizeo EIS?

George ( down under)

Rich, good questions, but like many of the choices = we in=20 alternative engines face, there is no yes/no, good/bad- = just=20 another risk factor with pros and cons to consider. I = believe that=20 there is some technical merit to using an electrical water pump such = as=20 reducing pumping HP losses, perhaps less weight, optimum coolant temp = control,=20 etc. . You could also factor in your water pump = current load=20 into your overall power considerations and run with a larger battery = to get=20 you your minimum alternator-out time. But, I must admit that I = find the=20 reliability and no need for attention mechanical pump preferable for=20 myself.

Me?, I'm waiting for a pizeo = electric ignition=20 system and a mechanical fuel pump and then I can throw the=20 battery away {:>).

Ed

howe----- Original Message -----

From:=20 ARGOLDMAN@aol.com
To: Rotary motors in = aircraft=20

Sent: Tuesday, July 11, 2006 = 1:02=20 AM

Subject: [FlyRotary] Re: - = EWP=20 Power

In a message dated 7/10/2006 11:43:35 AM Central Standard Time, = jesse@jessfarr.com = writes:
Have any of=20 you ewp folks looked at CSR Performance products stuff? They =
tell me=20 they have a high volume pump that fits into some good looking =
anodized=20 aluminum housings for big block car stuff that will pump up to 70 =
gpm=20 and is expected to last for 5500 hours or so; and, they have a = remote=20
that is something like davies-craig that is also expected to = last=20 about 5500
hours and pumps around 35 to 37 gpm. They run in = the $250=20 to $300 range,
supposedly use about 5 or 6 amps; and, I would = like to=20 learn from someone
else's experimentation, if possible.=20 <g>
jofarr, soddy = tn

http://www.csr-performance.com/=20

I have a potential safety question with using an electric pump, = unless=20 the engine is using a magneto.

The ignition system runs on battery/alternator power. If it and = the FI=20 are run by an ECU, it too needs power. The fuel pumps need = electricity.=20 There are other electric hungry mechanism that need power.

In an alternator/battery failure (short of having dual alt and = batt) to=20 have a water pump sucking 5 or more amps of power, this = significantly=20 shortens the available flight time before engine stoppage.

If the engine is magnitoed, when the electrons disappear = and the=20 pump stops, all that will happen is that the engine will fry---- The = result=20 will be the same

Rich

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