Mike Wills wrote:

At 09:57 AM 4/15/2000 -0700, you wrote:

Here is a simple throttle body that looks like it will pass enough
air for a rotary. The throttle position sensor is not needed with
Tracy's fuel injection system.

Will work with a Power Sport type of plenum chamber.

The stock Mazda two or three barrel butterfly types have slightly more
pumping losses than a large single barrel like this one.

It is from Kinsler. http://www.kinsler.com

Paul Lamar

Paul,

  It looks heavy, bulky,  probably expensive also. It seems it should be
easy to build a very simple and light weight throttle plate, stick a bell
mouth on the inlet side (how about using off the shelf velocity stacks sold
for Mikuni/Keihin motorcycle carbs) and be done with it? As Tracy mentioned
in his newsletter a while back since there is no venturi required with the
EFI intake, throttling can be as simple as you want to make it. What am I
missing here?

Mike Wills

The shaft bearings are always a problem area due to vibration. You can 
get overhaul kits for Cessna carb air boxes that have nice rivet on 
shaft bearings. The Cessna carb air box selects carb heat or filtered 
air with a butterfly valve.

Paul Lamar
 
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