Received a Face Book message from Mark today that he has his quad engine running now. It can be seen on his web site http://dunlavy.us/quad/index.html along with other quads including the one that my Dad built. He has a short video of it running. Still a lot of work to be done but he has reached a major milestone now having a running engine.
His name is DAVE Dunlavy and he has lots of the other parts done including the wheels and most of the chassis.
Your right Roger. It is David not Mark. Sometimes my memory takes a rest. He has done a fine job by taking a lot of pictures and posting them for others to see.
Thanks Larry, er, I mean Harry (sorry, couldn't resist)
Dave's really worked hard on this project, it will be quite an accomplishment.
Roger, hope all is well with you.
Thanks for the update Harry,