Paul,

  Didn't know if you had seen this before, but may be useful for aviation
  rotary
  engine builders. The attached presentation for a low cost mixture meter
  system
  has been given by Sid Wood, a member of our EAA Chapter 478, at Oshkosh
  forums
  for several years. He is installing it on his KR-2 (VW engine) project,
  but it
  is suitable for any internal combustion engine, except turbines and
  2-strokes.
  There is, however, no test experience with rotaries.

  R,

  Joe Spelz

  That is a very good price for a wide band.

  Thanks for sending us that.

  Paul Lamar

  Paul,
  We have been running a wide band O2 on the Yak all summer. So far
about 50
  hours on one sensor using 100LL and 120/140 race fuel up at Reno. We also
  tested the wide band using 50/50 mix water methanol injection during
Reno,
  and the displayed mixture was exactly what the math calculation for
  de-enrichment should have been. It was good to know that water meth
  injection didn't mess up the accuracy of the sensor.
  One of the sport class guys has been running on the same sensor for
over 80
  hours on 100LL, so they will live at least a while on AV gas.
  For our purposes, that is more than long enough to get us tuned on a
rotary.
  Larry

Good day all,

I did not see a link for the mixture meter system. I may have
inadvertently deleted earlier post? I've been wanting to do this on the
cheap for carburated motorcycle applications for a while. Tired of
riding up and down the highway doing plug checks.

Sincerely,

Al Koivisto

We don't have a link. Just this pdf.
Also put it in google.

First thing you need is a 500 gig drive.
better yet two of them. One as a back up.
Then make folders under your email program
for different categories like ignition, muffler,
intake, etc, etc, etc. Drag stuff over and drop
it in as needed. There is a search function
in most email programs that will allow you to search
for and read old messages based on key words.

Paul Lamar