REFLECTOR: Franklin PZL fuel pump

[Ken C. Baker]

Ronnie,
 
The guys at AirFlow actually built the Fuel Injection system that we're
using. They were able to take a look at the Franklin drawings fuel
consumption and determine that one of their off-the-shelf O-540 systems
would fit the bill. Wonderful folks to work with. It does require a special
fuel pump though for the higher delivery pressures.
 
As well - Duane tried a very similar bendix injection system on a Franklin
years ago, and was never able to produce the same full static RPM as when it
was carbureted. The problem is that the natural point in the Franklin engine
for the injector port is on the primer-holes on the intake rails - and this
leads to uneven fuel distribution. We think that we can do better this time
by machining a 'standpipe' injector port for a more direct injection path. 
 
The only guy I know of who has successfully fuel injected a Franklin and
seen its full potential is a guy named Harold Peck - who developed jigs for
machining injector ports directly onto the cylinders. I believe that he did
the work on Jim Powell's Velocity.
 
-Ken Baker
kenb at velocityaircraft.com

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From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Ron Brown
Sent: Thursday, May 01, 2008 2:12 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Franklin PZL fuel pump


Mike,
 
Why wait?
 
I bet Don Rivera and the folks at Air Flow Performance
www.airflowperformance.com can help you build a system for your Franklin.
They build systems for sports cars, racing boats, custom engines, stunt AC
as well as Lycomings etc......
 
Its worth a phone call - they can tell if it can be done - or why you
wouldn't want to.  They know their stuff!!!
 
Ronnie
 
----- Original Message ----- 

From: Michael  <mailto:mikewatsspg at gmail.com> Watson 
To: Reflector <mailto:reflector at tvbf.org>  
Sent: Thursday, May 01, 2008 12:52 PM
Subject: REFLECTOR: Franklin PZL fuel pump

Ken,

At this year's Sun n Fun there was a franklin booth on the main drag
south west of your location. I met Greg Lucas there and he introduced me
to a gentleman from Poland (his name slipped me,(age you know)).
He said that he represented the new owners of  Franklin  Engines, and
that they are almost ready to restart production on the new fuel injected
350CIR engines. The only thing holding them up is the final approval of
a new crankshaft. 

He (the guy from Poland) said their priority right now is to produce enough
spare parts to support the installed fleet. If you check with Greg
(405-268-3925)
he may be able to put you in touch with the factory guy, which may be able
to supply you with the parts you need.

When the new engine is released, I intend to retrofit mine over to fuel
injection.


-- 
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS 



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