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I built Bob Shores Herky (Hercules) engine this past winter. It was first run sometime in December. I run it on straight Methanol and glow ignition. It is a screamer and turns at over 10,000 rpm. It was built pretty much to Bob's specs, except I mounted the crank in sealed ball bearings at both ends. I had a great time building it and recommend it to anyone seeking a moderately difficult project capable of high performance when accurately built. My thanks goes out to Bob for his design and the affordability of this little engine. It was a big hit at both the Cabin Fever and Names events. Ron Colonna
Ron sells plans for engines he designs at http://members.aol.com/ronc9876/bookpage/Building_The_x.html .
More pictures and videos of running engines can be seen at www.ronsmodelengines.com .
Copyright 2004, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.