I made these. There is a Parrot in the back ground. The shell is a 20mm for reference.
I haven't tried firing them . Bores are 3/8". The one on the right is a breech loader 16th century.
Busy Bee in Canada sells Groz products. I bought a Groz Toolmakers percision vise. I use it all the time now.
I would like to get a tilting one but they are so expensive in Canada.
I believe Groz comes from India.
Could you take a engine like the boll aero 1.8 remove the contra piston and just shorten the cylinder height to get proper compression ratio and and add a glow plug?
I new to machining. So far I have built a wobbler and Tubal Cain's spool valve.
I would like try building a twin cylinder. Haven't found any plans I like. I was going to take a single cylinder design and join them on a single crank.
Is the crank 180 degrees apart for a single action and 90 for...