Silver Angel

The Silver Angel was designed by Bob Shores of Ruskin, Florida. I first met Bob and his wife Margaret at the second SAMS exhibit in Alabama. Unfortunately, SAMS was a short lived venue, but I have continued to see Bob from time to time at other exhibitions.

In any case I was quite impressed with his engines, so I bought plans for the Silver Angel. It is a clean design, mostly straightforward machining, but requiring some care in workmanship to get a good running engine. Mine has turned out to be the easiest starting and best running of the four stroke engines that I have made. I will not bore you with massive details of its making, but will give a bit more details on two of the subassemblies that I think will be of interest.. So here are some parts: (As usual. click on the photo for an enlarged version.)

Here is a general view of most of the parts of the engine ready for assembly. The cam and governor parts. I think the flyball governor is one of the most elegant features of this engine. The breaker plate and associated parts. Bob now recommends a Hall Effect device for triggering the spark, but I had unfortunately smoked the last Hall Device I had in stock, so a set of mechanical points was in order
Here, the "innards" of the finger joint box I made for the Angel. It contains 3 alkaline cells, a transistorized ignition module from Jerry Howell, and a Modelectric ignition coil. Here we are, running the Angel in prior to actually cranking it up. Bob recommended a three hour run-in period, and I followed his advice. Finally, the finished product, up close and personal, as the saying goes! Note the cutouts in the fins to clear the fly balls (done with a Dremel tool).
Now for the details I promised:

Click on the images to link to pages describing in more detail the features shown.

2/18/04: These two pages are still under construction.