> > >>On second thought here is a much, much better solution. Where is it written
     > > >>that a butterfly valve must be round? I don't know where I get these brilliant ideas.
     > > >>They just occur at random. This is the easiest to build, lightest
     > > >>and cheapest to build throttle body you will ever see. Major breakthrough.
     > > >>
     > > >>I extended the four inch square extruded tube plenum four inches further
     > > >>forward and used a square butterfly.  Further more the stock double hole butterfly
     > > >>shaft just happens to have a four inch long slot. Perfect for our use. Major
     > > >>breakthrough.
     > > >>
     > > >>It takes about a half hour or less to make this throttle body.
     > > >>The square butterfly itself is sheared out of . 049 sheet steel. What could
     > > >>be simpler to make?
     > > >>
     > > >>If you want to get fancy you can add a couple of small instrument ball bearings
     > > >>to the shaft.
     > > >>
     > > >>Paul Lamar

     > Paul, Are you aware of the Predator carburetor? They use a double barn door concept with two rectangular plates hinged from the side. The plates
     completely
     > open the orifice. Much more complex than the single shaft though.
     > Bill Jepson

     News to me. Sounds good though.

     Paul Lamar

     Paul,
     This is the perfect application for the slide throttle you drew up a while back.  No MP lost with it.

     Ken Powell

I am going to use the slide throttle eventually when I get the turbo system
working. The 4 inch square TB is just a quick and dirty way of making
a usable TB.

Paul Lamar
 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.