P-Port slide throttle.
Paul,
Thank you for the design work and testing.

Could the left side of the throttle body be shortened by an inch. Rather
than a full circle cut out in the throttle plate on the left intake tube
only a half circle is required.  Once the position of the throttle plate
moves half way the remainder of the circle does nothing in uncovering or
blocking the intake.  Therefore the closed throttle plate position only
requires 1" to the left of the left intake tube.  Rather than 3.696"
from center of left intake tube it could be reduced to 2.6xx".
Likewise, if you are sealing the clevis area it could be preferable to
shorten the right hand side also by moving the clevis closer to the
right intake tube.  Is 1 1/2" flat plate from the edge of the intake
tube to the cut out for the clevis needed?   M2c

Terry Adams
Thorp T18C
Stockton

Its a pull to close so you need 2 inches of Teflon on the left.

Yep you could get 1.5 inches out of the right side but why bother.
A few more inches of aluminum does not cost or weigh significantly more.
The Teflon comes in 12 inch by 12 inch sheets so there is
no material cost advantage there.

In any case give it a try. Might work just as well.

Paul Lamar

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