You probably need to get some good quality taps-it sounds like they are getting dull instantly. Drilling the hole a little bigger as the last...
Try Otto Engine Works http://www.ringspacers.com/
They have all kinds of rings available - Reasonable prices also.
I will be watching your build.
It's going to take you a while to whittle down that big chunk of tool steel to a flywheel!
I'm thinking that the sealing surface is not perpendicular to the threads.
This will cause a lot of problems with leakage.
Why don't you just lay out your lines and cut to them with a .500 end mill?
Instant .25 radius.
I have 3 engines running homemade corian plugs. They have run all day at the shows for years on the same plugs.
The only issue I have had is that...
Make a mandrel to hold your piston by the pin hole in your lathe.
Leave enough room to cut the groove.
Make or purchase a .020 wide internal...
I have a garden sprayer (new) that I set up with the correct fittings to run my air engines. A few minutes of pumping will run them for about 10...
Use a small T type tap handle with a hole at the end of it for the tip of the spring loaded guide.
As others have stated-tapping the hole straight...
I should have said search on Google. The first thing that came up for me was "Brian Rupnow build-air/steam hit and miss engine" I hope you can...
There are several build logs for this engine.
Search "Rupnow air hit and miss"
Enjoy building it-I sure did!
I appreciate your compliment.
Someday, (after retirement-still a few years to go!) I hope to design my own engines.
This was a fun...
Here is my air hit and miss. I usually build I.C. engines, but I have trouble keeping them all running at the same time at the shows....
I have one identical to yours. It has made a lot of parts over the years. You got a really good deal on that! I paid $400 25 years ago. I have...
I used a watch crystal from Amazon glued into a recess on the brass tank end with gorilla super glue.
It has been almost a year and a lot of hours...
Another masterpiece, George ! I've been waiting for this one. Great work!
Looks good-runs great!
Mine has been my most reliable IC motor so far.
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