Are you still going with the Quadra 50cc? I should be getting two Stihl 65cc four-strokes in a couple of days.Can't wait to check out the dimensions.Just MHO, but I think a 4-stroker would be awesome in your Tripehound.Of course,you probably know that!
Glad to see you back at "work",although I must applaud your other accomplishments.
J