[NSRCA-discussion] o.s. 1.60 backplate fuel pump ?

[Kelly Regan]

A thought just entered my mind....
Has anyone ever used a retractable landing gear air tank
and a pressure regulator to deliver a set pressure to the fuel
tank during the flight?



Lance Van Nostrand wrote:
> Jon,
> I first saw a built in pump overheat on a Webra 145 in Lubbock 
> (3000ft) on a 104 degree day.  After that I convinced the Mintor folks 
> to install a nylon isolator/insulator.  They eventually got it done 
> right (their first attempt leaked) and sent me test results of the 
> engine running in 160 degree ambient.  My concern with the perrys is 
> that they seem to work for a while, then need adjustment.  now I know 
> there are probably a lot that have found them rock solid, but my 
> observations are otherwise.  I know several that have had much better 
> luck placing the tank on the firewall and eliminating the pump for the 
> 160.  in my observations, if I were to use a 160, this is what I'd 
> do.  The 160 was not really designed for a pump and has a small 
> venturi with a lot of suction and doesn't need a pump.  Engines 
> designed with a pump in mind might not be able to get away without one.
> --Lance
>  
>
>     ----- Original Message -----
>     *From:* JonLowe at aol.com <mailto:JonLowe at aol.com>
>     *To:* nsrca-discussion at lists.nsrca.org
>     <mailto:nsrca-discussion at lists.nsrca.org>
>     *Sent:* Saturday, November 04, 2006 11:49 AM
>     *Subject:* Re: [NSRCA-discussion] o.s. 1.60 backplate fuel pump ?
>
>     In a message dated 11/4/2006 1:01:33 AM Central Standard Time,
>     toneuf at sbcglobal.net <mailto:toneuf at sbcglobal.net> writes:
>
>         Guys,
>                     OK,   I got into this discussion late... 
>                I am trying to locate a backplate
>                fuel pump unit for _my O.S.  1.60  FX engine._
>                I read the infomation by Tom Koenig from last year, but
>         still need the
>                unit contact information.
>                Does this unit acutally exist ?
>                Maybe someone out there has a unit to sell?
>                If not, can you  give me the forward  to this unit ?
>                Austrialia?   Sheesh....
>                   Regards,  Robert Hixson    San Francisco
>
>     When I first heard about people doing this, I thought it was
>     really neat.  Now, after thinking about it, I can't recommend
>     doing this.  Many engines with backplate pumps have problems with
>     the pumps overheating, and vaporlocking or deteriorating.  I've
>     seen this on Webras and Mintors, and watched the owners go to
>     external Perry pumps.  Having the pump separate keeps its temp
>     closer to ambient.  Plus, you can go to almost any hobby shop in
>     the country, and buy a Perry pump off the rack for $30, and not
>     worry about having a hard to find spare in an emergency.  You can
>     change it out without removing the engine if you suspect a
>     problem.  Todays widebody pattern ships have plenty of room in the
>     nose, so mounting it is not an issue.  In addition, a separately
>     mounted pump makes it much easier to adjust pressure as you are
>     setting it up, and it isn't subjected to all of the vibration of
>     the engine.
>      
>     Just my opinion.
>      
>     Jon Lowe
>
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-- 
______________________________________________

Kelly Regan
www.reganbrothers.com
Home Page: http://mysite.verizon.net/vze6uror/
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