VP30 mounting, ARIA mount effcet on remote needle

[Bob Pastorello]

The VP 30 has a 'nipple' for the crankcase pressure line.  There is also a "vent hole" that is on the other end, between the inlet/outlet fittings, adjacent to the adjuster screw.  The instructions state that the vent should be placed in some particular orientation, but I've found no differences in my setups.

Bob Pastorello
rcaerobob at cox.net
www.rcaerobats.net


  ----- Original Message ----- 
  From: Steven maxwell 
  To: discussion at nsrca.org 
  Sent: Thursday, August 26, 2004 4:09 AM
  Subject: Re: VP30 mounting, ARIA mount effcet on remote needle


   Ed thats not a vent hole in the Perry pump it's the pressure hole for the crankcase tap and the instructions do say to mount horizontal which means that the hole in the plastic would on the side not down, hope I'm not reading something wrong here.
   Steve Maxwell

  Ed Alt <Ed_Alt at hotmail.com> wrote:
    Just wondering how important it is to have the vent hole in the plastic housing pointing down on the VP30?  I assume it is to minmize the chances of collecting dirt.  Any other reason for it?  This is all leading somewhere...

    Another question: I'm using an ARIA mount with an OS 1.60.  I've test run it with no pump, no regulator and with a Cline regulator and with an Iron Bay regulator.  The first thing I noticed is that no matter what, you can not get smooth fuel flow from the remote needle valve since it shakes around so much on the mount.  No problem when it's removed from the rear bracket.  I've concluded that it's better to avoid the demand regulator approach with this engine, since it probably has to be placed in between the needle and the carb to make it work well - there is no easy way to do that besides letting it hang off the fuel lines.

    So I ordered the VP30.  This whole mess is going into a Focus II and it also seems a bit awkward to mount the VP30 to anything that will allow it to be anywhere in the vicinity of the carb. This is worsened by the requirement to point the vent downwards. It would appear that the best thing is to move both the pump and needle valve as close and as level to the carb as possible.  So far, all I can see as a way to do this is to mount it all to the cowl (again).  Yuch.  Any other thoughts on this? Can I safely put it as far back as the side of the engine box and expect it to work well?

    Thanks
    Ed
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