|Stroke||1 1/4 inch|
|Length||8 1/2 inches|
|Configuration||Horizontal single cylinder|
|Extra equipment||Drain cocks
|Taps required||2, 4, 5, 7 BA
3/16 x 40 tpi
1/4 x 32 tpi
|Notes||A nicely proportioned model of a mill engine which Stuart
produced in large quantities as fully-machined kits for assembly with hand
tools only. Consequently, most S50s run pretty well - be aware though that
raw castings were supplied and some engines were amateur machined.
Good examples will run slowly with their long stroke configuration and are rather pleasing to watch.