Gentlemen,
Iâ??ve been following these discussions regarding the slide throttle and
wondered if anyone knows about the slide throttle that BMW made for the
M3â??s back in the late 80â??s early 90â??s in the DTM series in Germany.
http://e30m3performance.com/tech_articles/engine-tech/dtm_slides/index.htm
I canâ??t figure out from the pics how the mechanism works. It appears
that the sliding component is a metal (aluminum or SS) plate with some
Teflon coating?
Also found another link to a discussion on slide throttle and barrel
throttles. Can someone elaborate on the barrel throttle and how it
operates.
http://www.ten-tenths.com/forum/showthread.php?t=89467
Paul C
Here are some 3D barrel throttles I have been fooling with.
Paul Lamar ...No rotor no motor.
Paul,
Here's an idea for your cylinder barrel throttle. If you made the end of
the cylinder the inlet, like a log manifold, you could do away with the
long slots in the barrel. You would only need the bores leading to the
intake tubes. I've attached a example. The part could be made simpler,
but I have shown coped inlet tubes and bell mouthed tubes. A Teflon
sleeve on each end, or 2 Teflon encapsulated o-rings could be the
bearing surface.
Bill Jepson
You have a two tube P-port configuration shown.
Best used on a four side port engine as the plenum is out near
the end. You need the slide throttle in near the rotor housing
on a p-port to minimize the storage of exhaust contaminated
intake air.
Here is a possible 3D application for the combined plenum and
barrel throttle.
If you really want to make it easy operation you could use
the ball bearing trick on each end we used in the LAEV prop
rather than Teflon. Last dwg.
Paul Lamar
Bill Jepson,
What about the tube slide throttle that Harley Davidson use? Is there any
advantage in this type of set-up?
I guess it's similar as yours and Paul's suggestion, would there be any
advantage in sliding it back and forth rather than around?
Back and forth could be sprung, then again having it go around could have
bearings as Paul suggested.
I guess your both saying the whole plenum would be your slide throttle? tube
in tube would be simpler!
George (down under)
The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site.
http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.