Yea Tim, the RCV engines are actually pretty neat. I have had a 60sp (the funny looking ones!) for about 4 years now and I swear it has more time on it then any other engine that I currently own. It took a while to break in, but it swings a 16x12 or 17x10 two blade prop very happily, and it is dead reliable. The only time it quits is if I tell it to, it runs out of fuel, or I have the idle set too low (and it will go low). I will have to look at what size three blade prop people are using on the 90sp, but if it is what I need then they would be awsome on the B-25.

On a side note, I have NEVER seen someone in your position spend as much time relaying your experiences on an airplane that they helped develope. Normally a manufacture does not even come on here much less come forth with all of the information that you have. I think that everyone following this thread appreciates it and I appreciate your taking the time to get that measurement for me.