I could use oneKeith Menard How many would be interested in a low cost Teflon slide throttle kit?
The side plates can be NC punched out relatively cheaply much like
an RV
airplane is pre punched. You can make the Teflon part on a drill
press and
hole saw.

Paul Lamar



Definitely count me in for one of those. Will it all fit in a $5
box? ;-)
C. Smith

Don't know what it will cost as it won't fit a flat rate box.
I'll need to weigh it. My guess is metal part will be less than
2 pounds. It is also about 15 inches long.


Paul Lamar


Count me in for one too, Paul.

Barry Doublestein
Atlanta Glasair SII FT
N59BD


Hi Paul

I do have a question,did someone try this device in flight?
did someone face with fuel leaks with this slide throttle kit
before??/
Jean Prudhomme


Not yet but it is going to fly any minute now.

Slide throttle have been used on Mazda racing engines for 30 years.

Yes. We had slide throttle leaks on the original dyno version but
we fixed
that with 1/64th (.015) thick gasket material. Now all raw excess fuel
is captured and runs into the engine.

The engine is running fine and the slide throttle is working slick
as snot according to Mark Suspinski :)

Paul Lamar



If you run your P Port all over the engine and install
the slide on the sparplug site and injectors location
do you think it can be a difference on performance.


Jean Prudhomme


Not recommended. It hurts the running of the engine at lower
RPMs. You want to keep the throttle as close to the rotor
housing as possible. Steve Beckham on here put the throttles
just inside the rotor housings. At part throttle the runners
store exhaust gas due to valve overlap and make the engine
miss. This was discovered almost as soon as people started
building Wankels. The NSU Wankel spider engine had the throttle
in the p-port rotor housing way back in the middle 1960's.


Paul Lamar



As Paul said, the prototype slide throttle is working hunky-dorey on my
pport.Even at max static rpm, there is no hesitation or binding
on the
slide.Since my model left the "Lamar International"
factory, there were a few improvements to the design which Paul
attached in
an earlier message already (so don't be surprised if the pic of
mine from
the first response doesn't match the drawings).

The one important bit is to use the proper gasketing material (Paul
leap in
here & say what it is).During start (we prime 4 - 6 pushes on the ec2
before start), fuel does tend to collect in the slide & if the gasket
material is wrong it will end up leaking out onto the exhaust (not
a good
thing).This excess fuel in the slide causes the engine to run
rich for
the
first couple of seconds.After the engine gets running for a bit &
sucks
it
all out it all settles down nicely.

We're a couple weeks away from first flight -- mostly due to me
taking the
kids to the House of Mouse next week.I fighting a few sensor
issues (sure
would be nice to know how much fuel is in the tank) before calling
the DAR.
The throttle has worked flawlessly during our high speed taxis.

Mark (Rocky Mtn High)
*BTW - the only issue I have with the slide throttle in it's
current incarnation is that it's a bit tough to "tune" the
position of the slide vs position of the throttle handle.This
is due to the intake tubes being curved, so you can't visually
see the exact position of the slide for any given throttle
position. In my case, it is possible (due to the position of
the holes in the slide itself) to go a bit beyond WOT - which
starts closing off the opening again.Thus I have to hold it all
together in position without the cover plate attached, adjust
the connection so throttle handle WOT is when the slide is
exactly at WOT, and then bolt it all together.Not an enormous
problem by any means, just a bit more work.

Also, be prepared for a bit of creative routing for theh
 throttle cable.On some ships, getting from a centrally mounted
 throttle handle over the port side of the engine can be a bit
 of work.  Mark Supinski, You've done a very nice install.Let
 us know how the inspection and first flight goes, and how the
 slide throttle works in actual flight conditions.


Mark S.
Austin (Rocky Mountain Low)

BTW - Did you get around to re-doing that fuel rail mount?


Mark Supinski,

Get one of those cheap Harbor Freight bore scopes and stuff it down
the intake tube. It will also be useful for inspecting your muffler.
The kit will have the correct dimensions so when the slide is fully
open the holes in the slide will align with the tube openings.
The slide throttle you have is a prototype. I am sorry it was not
correctly made.

Paul Lamar


I could use oneKeith Menard