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Drill a hole in the middle for a bolt, put the bolt in your cordless drill, and start your I.C. engines by holding it against the flywheel. I've been doing this for years - works great! Scott

Looks great! A car spare tire will run it for a while with the right fittings. Scott

Thanks! Another few years and it will be done!

Here are some more pictures of my work in progress. It's starting to look like something! I'm enjoying your build log. Scott

I am in the process of building the vertical air cooled version. My builds take a while, as I have a lot of interests. I'll post some more pictures soon. Scott

I just finished making a batch of 4-40 scale size nuts for a Parcell and Weed engine I'm working on. A bit tedious, but they came out well. You can blacken them with cold gun blue. Scott

Drill with a smaller drill first, slow the drill RPM down, and use some oil-should work fine. Scott

I built a Jan Ridders Debbie 2 stroke. All you need to do is put the check ball in and using a small punch, tap it with a hammer to seat it. It worked great for me. It's best to use a new ball after seating it. If you need any more info on this engine, feel free to ask. I have sorted out a lot...

Thanks, Brian for keeping us entertained! I look forward to every new posting. Can't wait to see it run! (take your time, though - I'm stuck in the house until May 15th) Scott

I glued a watch crystal to the end of the tank on my Jan Ridders Debbie engine with Gorilla super glue 4 years ago and it still doesn't leak. Just be sure everything is really clean before you glue it. Don't use silicone sealer-it will leak. Scott

This is a very interesting design. Welcome to the forum!

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 poster suggested will also help. Good luck-stainless is tough!

Hi Brian, Try Otto Engine Works http://www.ringspacers.com/ They have all kinds of rings available - Reasonable prices also. Scott

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! Scott

Great progress!

I'm thinking that the sealing surface is not perpendicular to the threads. This will cause a lot of problems with leakage. Scott

Why don't you just lay out your lines and cut to them with a .500 end mill? Instant .25 radius. Scott

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 the insulator is easy to crack during machining.

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 groove tool that will fit in the pin hole. Scott

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 minutes.