|
Here's a few more photos. One shows the
multiturn potentiometer (that some of you suggested - thanks) that has the gear
on one end. A 4 1/2" length of rack runs up and down turning the gear and
the pot as the throttle body housing moves. Total cost was less
than $10.00 compared to over $100 for the cheapest linear
position indicator I could find.
The lower manifold is my first one (this is
manifold #5 {:>) which I called my "boat Anchor" as it is two slabs of
aluminum each with 1/2 of a runner cut into it and bolted together. The
next pieces is the Racing Beat Weber manifold which conveniently does the
merging of my primary and secondary for me and on which I mount plate with the
two 1.84" dia tubes, the motor and jack screw etc.
I will cut off the piece of jack screw sticking
out, but wanted to be able to remove the upper limit switch for ground testing
as I can then get the total 7" of travel I want rather than the 4" I am
restricted to when I put the cowl on. So I will be able to get over 52" of
port to port length for testing on the ground and then 48" will be about the
maximum under the cowl. The minimum port to port distance is 42" which
depending on OAT should give me the EDDIE effect around 6500 rpm.
Actually, a the spread of 1500 rpm that the 4" of
travel gives me just might be more than enough in any case.
So we hopefully will see what this does in a couple
of days. Oh yes, the throttle body mount was poured from polyurethane
plastic.
Ed
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
|