Hi=20 I know that quite a few people on the list fly R/C planes, so I was = wondering if anyone has some advice: I have a 2-stroke glowplug engine that I'm intending to convert to spark = ignition. I've built an electronic ignition unit using a magnet in the prop driver and a Hall sensor that will mount = on the crankcase. My question is how do I determine the position of the Hall sensor with = respect to TDC of the engine? I am only interested in single-speed (full throttle) running at the = moment. Has anybody got any practical experience or can they point me to a book = or website - I've looked a lot myself but without success. Thanks Alan Embedded Systems Engineer Microtima Ltd Ouseburn Mews 3-7 Stepney Bank Newcastle upon Tyne NE1 2PW Tel: 0191 2304411 Fax: 0191 2304422 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body