[Healeys] Dual fuel pumps

Robert Blair rnbmail at yahoo.com
Sat Apr 16 10:48:52 MDT 2011


Tracy,

So if facet pump 2 [nearest the carbs] fails for whatever/any reason, facet
pump 1 [in series and nearest the tank] is able to pump through the failed
facet pump 1?  This means that pump 2 would have to be an open circuit in its
failed mode, and not a high resistance in failed mode.  Is this the case?

Would a good su pump actually pump through a failed su pump in series - ie the
failed pump is not high resistance to flow?

Clearly either would pump fine while in parallel.

Robert N. Blair  Yellow 65BJ8  RNBmail at yahoo.com
 



--- On Sat, 4/16/11, Tracy Drummond <bighealey at charter.net> wrote:

> From: Tracy Drummond <bighealey at charter.net>
> Subject: Re: [Healeys] Dual fuel pumps
> To: "'keith taylor'" <ktee20 at gmail.com>, "'healeys'"
<healeys at autox.team.net>
> Date: Saturday, April 16, 2011, 4:47 AM
> I use two facet pumps back to back in
> series mounted on standoffs with
> rubber bushings to reduce vibration.
>
>   I have a three way toggle (on-off-on).  I use a
> few elbow fittings to make
> it easier to connect the very short run between pumps.
>
> In from tank >pump1>pump2> to carbs
>
> I have used the secondary pump to temporarily fix another
> friends  car out
> on tour.  Never needed to use it on my car.
>
> Warm Regards,
>
> Tracy Drummond
>
> PMP | ITIL Service Manager | CISSP | bighealey at charter.net
> | 408-394-3444
> cell | 408-776-0133 home | http://www.linkedin.com/in/tracydrummond
> -----Original Message-----
> From: healeys-bounces at autox.team.net
> [mailto:healeys-bounces at autox.team.net]
> On Behalf Of keith taylor
> Sent: Friday, April 15, 2011 4:13 PM
> To: healeys
> Subject: [Healeys] Dual fuel pumps
>
> I propose fitting a secondary pump to a BN2 (neg
> earth)  using an SU +
> Fedtro with a changeover switch The simple option is to run
> them in series .
> Is there any reason not to do this.ie loss of pressure etc
>
> Keith Taylor
> WAMBERAL OZ
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