Pump

[randy10926 at comcast.net]

I thought the FL-70 had a new system to pressurize the fuel tank.  Do you need the perry pump?

Do not think I would run both a perry pump and the aeropressure thing that OS is advertising with the FL-70.

Randy
-------------- Original message -------------- 

> Use the line that would go to your muffler as a vent. If you are drawing 
> fuel from the tank, via a pump, you need a vent to equalize the pressure in 
> the tank, so as to not cause a vacuum. If you are sucking the fuel out, you 
> need to allow air back in. I normally fun the line straight down and out 
> the bottom of the fuse, attach the line with a clamp to the firewall. You 
> can also put a check valve in line to allow air to enter and no fuel to 
> exit. 
> 
> After all of this, I never asked, do you already have the tank vented? That 
> should have been my first question. 
> 
> One more thing, I've run the Perry VP-20 with muffler pressure, it works 
> great. I believe the VP-30 says not to use muffler pressure. 
> 
> Ken 
> ----- Original Message ----- 
> From: "Jay Marshall" 
> To: 
> Sent: Sunday, December 04, 2005 7:48 AM 
> Subject: Pump 
> 
> 
> > Just installed a O.S. FL-70 4 stroke into a new plane and added a Perry 
> > pump 
> > because the fuel tank is over the CG. The question is: should I disconnect 
> > the standard silencer-tank pressure connection? 
> > 
> > Jay Marshall 
> > 
> > 
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