From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: Water Pump
Date: Sat, 16 May 2020 14:26:44 +0800
References: <list-244428@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-244428@logan.com>
Message-Id: <0F3C1AA2-88CB-4846-9B30-9E7806CE465F@gmail.com>

Thanks Andrew.

Steve

> On 16 May 2020, at 12:50 pm, Andrew Martin andrew@martinag.com.au =
<flyrotary@lancaironline.net> wrote:
>=20
> Steve. I used Re-medy pump as my motor came to me minus a pump so had =
to find alternative and that was the only aftermarket one available. At =
that stage Todd was still building so I was going to wait on his results =
re elect pump, but then Re-medy has worked well without issue.
> It has to be part of whole package so is difficult for us as each has =
slight differences in installations. Mine has no restrictors other than =
pipe friction & radiator. Both these are minimal as pipes are all 25mm =
internal and a large radiator. My theory is to allow coolant to flow as =
fast as possible all the time. Cavitation happens when the pump impeller =
slips in the coolant. ie: when impellor is spinning too fast for what =
can flow through all restrictions. Or when pump is accelerating the mass =
of coolant like in a car when changing gear/ revs frequently.
> In aircraft operation, once the coolant flow is up to speed, the pump =
will only require enough power to overcome friction & restrictions =
within system.
> Basically if you want a restrictor/thermostat, slow your pump down =
also to protect the pump or minimize other restrictions like small hoses =
& radiators. or design the system to allow full flow with little =
pressure difference in inlet & outlet of the pump.
> Andrew
>=20
> On Sat, 16 May 2020, 7:15 am Stephen Izett stephen.izett@gmail.com, =
<flyrotary@lancaironline.net> wrote:
> Thanks Guys for the feedback re pumps.
> Andrew, what information did you get that caused you to change to the =
Re-medy pump?
> Was it from a reputable source, like racers? I=E2=80=99ve put it in =
the diary to call GoGear when I=E2=80=99m back in Perth early next week.
>  I have little trust in advertising these days and if I=E2=80=99m =
going to go to the trouble and expense I=E2=80=99d like some science =
behind it.
>=20
> Cheers
>=20
> Steve
>=20
>=20
> > On 15 May 2020, at 11:17 pm, Andrew Martin andrew@martinag.com.au =
<flyrotary@lancaironline.net> wrote:
> >=20
> > I=E2=80=99ve had Mazmart Re-medy pump in since start. Seems thats =
been one component I=E2=80=99ve not had to worry about.=20
> > Andrew
> >=20
> > --=20
> > Regards Andrew Martin Martin Ag
>=20
>=20
> --
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