Brian Kraut wrote: > Oh, one other thing I found out when researching the subject. They sell the > sensors with internal heaters to get them up to operating temp. That type > is not necessary for aircraft use unless you have it mounted way far away > from the head where it shouldn't go anyway.
Yep, we don't need the heater. The heater versions (so-called "three wire") are to heat up the sensor quickly to stabilize the idle on injected car engines. We don't have that problem, so the single wire for $30 or so is all we need. I have an official Cyberdyne 2.25" automotive meter that I paid probably 40 bucks for a few years ago (I don't think the company is around anymore), but I found a guy on the internet who cooks up one just like it but in the form of a segmented LED, in three colors (green in the middle, yellow outboard, and red outboard from there) for twenty five bucks. I'll probably cut a rectangular hole for it next to my similar looking trim indicator, and put my g-meter back where the round mixture meter is. I've asked him if he'd be interested in making more of them for other NetHeads, and he's thinking about it... Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford
