[NSRCA-discussion] Perry VP30 Question

[Pascoe,Tim [Burlington]]

Thanks for all the replies. Seems I can mount it anywhere within reason,
and go fly! I've seen some schematics of the flow return option, but it
does seem to be more hassle if I don't need it.

 

Tim Pascoe 

________________________________

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard
Lewis
Sent: Tuesday, February 16, 2010 9:01 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Perry VP30 Question

 

The small vent hole is the atmoshpheric pressure reference that balances
the regulator in the pump.  The Perry pump is primarily marketed for
surface use and the instructions are written with that in mind.  If the
vent faces down in a surface application it is less likely to fill with
dirt and cause the regualator in the pump to malfunction.  In an
aircraft application, you still want the vent to remian free of
obstruction at all times, but it is unlikely to stop up with dirt, so
orientation is not as important.

 

IMO - Distance from the engine is not critical in a pumped setup.  In a
regulator arrangement like Kline, it is critical since the carb draws
fuel from the regulator, but not in the pumped setup.  That being said,
mine have generally been placed close to the engine.  I did have one
setup with the pump behind the firewall.  It had 6 inches or so of fuel
line between the pump and carb and operated just like any other setup I
used.  Some people use/experiment with a bypass arrangement wihich
allows the excess pumped fuel to return the tank and the bypass tee for
this needs to be very close to the carb.  We never had much luck with
this setup though.  It worked, but was a hassle and did not seem to
offer any advantage over the straight pumped arrangement.

 

Richard 

 

________________________________

From: Jon Lowe <jonlowe at aol.com>
To: nsrca-discussion at lists.nsrca.org
Sent: Tue, February 16, 2010 7:09:03 AM
Subject: Re: [NSRCA-discussion] Perry VP30 Question

I've mounted them in all kinds of ways and never had a problem.  After
all, your plane will be in all kinds of attitudes when it is flying!

 

Jon Lowe

 

 

-----Original Message-----
From: Pascoe,Tim [Burlington] <Tim.Pascoe at ec.gc.ca>
To: nsrca-discussion at lists.nsrca.org
Sent: Mon, Feb 15, 2010 9:53 pm
Subject: [NSRCA-discussion] Perry VP30 Question






I'm putting together a practice plane with an OS1.60, including a Perry
VP30 




pump. I've never used a Perry pump before, and am wondering about the
mounting 




instructions. It says to ensure that the inflow/outflow nipples are
mounted 




horizontally, with the bleed hole down. However, I'm finding it tough to
get a 




place near the engine where I can mount it this way.









1) Does it have to be close to the engine (can I mount it inside the
fuse behind 




the firewall by 4-5 inches)?




2) Can I mount it with the inflow/outflow vertical, and closer to the
engine?









Thanks,









Tim 




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