Perry Pumps

[rcaerobob at cox.net]

The 'vibration pump' is along the principle of a self-winding watch.  Works better/best with highest vibration (hence the instruction suggesting to mount it TO a 4-stroke motor).  I prefer the other one, and evidently so does OS, as it is the pump they now sell as the OS 91"Heli" w/Pump.  Identical unit...even has the Perry label on the body.

Works fine.  Don't let tapping the backplate stop you from taking advantage of it.  The Cline and Iron Bay units require the SAME type of crankcase tap/pressure to drive them, so why not make the pumping more consistent/simpler/reliable?

BTW - I *have* two Iron Bay units, that just need check valves....first $25 gets 'em both!!!
> 
> From: ronlock at comcast.net
> Date: 2004/06/03 Thu PM 02:05:42 EDT
> To: geobet at gis.net
> CC: discussion at nsrca.org
> Subject: Re: Perry Pumps
> 
> There are two types of Perry pumps.
> One runs off crankcase pressure (so requuires you tap into the case,
> and run a line to the pump) and pumps fuel from a non-pressurized vented tank to the carb. 
> 
> There is another type Perry, that uses vibration to actuate a pumping
> action.  It too pumps fuel from a non-pressurized tank to the carb.  No
> crankcase tap is needed, pump must be mounted near engine so it gets vibrated.  I'm not sure how critical mounting and orientation of the vibrating pump is.
> 
> Later,
> Ron Lockhart
> 
> 
> >Clear something up for me, please guys.I'm a little confused about the operation
> of a Perry pump. Is a Perry pump actually a pump and if so what does it derive
> it's power from? I was under the impression that it was a regulator like the
> Cline and required pressurizing the tank from the crankcase pressure, but I see
> in Wayne's post that he states no need to pressurize the tank so therefore I
> must now conclude that it must truly be a pump, but how the heck does it work,
> guys. Help me out here, please.
> G.<
> 
> 
> 
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Bob Pastorello, El Reno, OK, USA
rcaerobob at cox.net
www.rcaerobats.net

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