Chris, I am using the Innovate Digital MTX obtained from Jegs Performance. I have tried other AFR gauges, but these were not suitable for the aviation application. Prices vary along with data logging and other bells and whistles. If you burn 100 LL, expect to replace the O2 sensor every 100 hours or so due to lead clogging. http://www.jegs.com/p/Innovate-Motorsports/Innovate-Motorsports-Digital-MTX-Wideband-Gauge/1558858/10002/-1 Whatever mixture meter you decide on, highly recommend you get it as a system with O2 sensor, computer and display from one vendor, brand and model. Don't forget the correct bung to weld into your exhaust pipe. I put on a Mixture Meter forum at the Gathering each year and also at AirVenture. Won't make the Gathering this year - Chino just to far for me - but definitely will be at Oshkosh.
Sid Wood smwood at md.metrocast.net Tri-gear KR-2 N6242 Mechanicsville, MD, USA ----- Original Message ----- Sid, What mixture meter are you using? Thanks Chris Gardiner ------------------------------------- My Zenith on the 2180 VW does go rich to lean from idle to WOT. I have a Mixture Meter that shows this in real-time and can dial in the mixture from the cockpit as needed. The knob in the cockpit is connected to the needle valve on the carb by a VW speedometer cable. As far as I can determine, the Zenith I am using has only two jets: an idle jet with a screw adjustment and a run jet with a screw adjustment. The run jet is the one that I am adjusting from the cockpit mixture control knob. This set up works fine for me. I figure: It ain't broke, so I don't need to fix it. In my company of one, I am putting the design engineer on furlough and turning the flight testing over to the test pilot and flight test engineer. >> >> Sid Wood ------------------------------------------------------------------
