Here is a video of the first run of my Farm Boy engine after sorting out some issues with Hall sensors! It uses an ignition circuit I designed. This engine took about nine months to complete working on it sporadically.
I could hardly hold the camera still when I heard it run reliably for the first time! It was all I could do to suppress whoops and hollers on camera!
The engine is running on denatured alcohol.
The spark plug is a Rimfire VR2L. I designed my own spark plug which is in the process of being made. I'll add a build thread with how I did it and working drawings if it all pans out - I think it will.
I'm as happy as a pig in... well you know...
Here's a link to the video: [video=youtube;DoI33CuWYsU]http://www.youtube.com/watch?v=DoI33CuWYsU[/video] Cheers! John