Hi Scott,
No, I was actually working on this before anyone but Tracy was using the sandwich plate idea.  I didn't use this concept because I needed the area under the engine for a radiator and I also needed the left side of the engine free for the exhaust.  My first effort was much like Mike Wills' but I couldn't fit a large enough radiator (or so we thought at the time) and I also couldn't figure out where to put the oil cooler.  The next try was something like what we now call the Schertz beam, which is a beam attached to the front (flywheel end) of the engine and the motor mount tubes running to this point.  The problem with this was the narrow profile of the RV-4; by the time the mounting rubbers and brackets were built lots of valuable real estate was being used and I still could not fit a radiator and oil cooler side by side under the engine (which is what Mike Wills and I had decide would be optimal for the RV-4).  So, I hung the engine from the rafters, placed a mockup of the firewall behind the engine, the placed styrofoam mockups of the radiator and oil cooler were I thought they would work best (again, with the best knowledge of the time).  After everything was in place, I could see that there just was not enough room besides the engine for motor mount tubes.  Mike Wills was gracious enough to share lots of pictures of his mount and he traded many emails with me, so this design is basically what Mike and I came up with.  I might also give credit to Paul Lamar for making sure that I had everything triangulated properly.  Lastly, you just cannot believe how much easier and flexible system design is when you don't have all those tubes in the way!

Ken Powell
> Thanx for the pics ken...
>
> Had you gone the route of trying to do a sandwhich plate between the
> block and the water pump prior to bolting to the front of the water pump
> housing?
>
> Thanx...
> -Scott
>
>
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