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tWell tried to make her pop, but no pop. Did valve timing according to Newsletter data. I am getting spark at the plug. Got one pop, just one. Nothing but issues with mixing chamber so I think this may be the issue. Sure seems to me like not even close to enough air. As I remember a #60...

I don't get it. I use the correct size tap and die and it doesn't start. NPT thread. What might I be going wrong? Finally had to go to 5/16-27 to be successful

That probably is't enough

On to other items of need and interest in this project. Got to have elbows and T fttgs. Broke down and bought the tap and dies for 1/16-27 npt. Work well on the brass and bronze. Anyhow, the process. Drew up some elbows and T fittings in groups of 3 contiguous fittings in Fusion360. It...

That is good to know, never considered that aspect.

Karl, As I mentioned in email, there is still a long way to go, but step one is complete

Well, the engine is completed. Still need to make up the oilers, fuel system, ignition system, water pump and cooling system, but these are all over and above the engine itself. There are a lot of little fiddly things to do still. Made up the holder for the hall sensor. Need to get black PLA...

Just learned that Gary Martin has a set of water pump castings, no drawings, but some photos. He sent a photo of that awesome purple machine with one. As promised the casting for the nipples, and in the background a bit of the floor before it was done.

Already cast them, just need to cut off sprue. They came out really nice. Will try to photo later

No photos today. Sorry. Have been working on the display stand, the exhaust flanges, and some other assorted sundries. Removed the engine from the stand and started doing the appearance stuff, like floor planking. Used to make guitars and took some of my fancy woods that I didn't know what...

Kind of dinking around doing little things. In particular, since the keyways and flywheel seem to cause issue, decided to incorporate some set screws that tighten down on the keyway itself as can be seen in the photo. Interestingly I had just the right size drill for this and it was a foot...

Coles? I think they are out of business. I use PM Research for that type of stuff. Actually right now I am drawing and printing up plugs to just cast my own. Will look at HD for the plastic.

Where and what type of plastic?

I used 8 because some folks had mentioned them blowing gaskets.....Ya .125" drill rod. I am finding some stuff is just easier to use a close something else. Not sure if I mentioned above, but the hole for the valve stem I reamed at .125 also, and I threw out the guides as they just kept...

Karl, found mistakes in plan sizes for the clevis and arm holes. Just make sure they have the same size hole. Also need to get enough depth that the motion can occur at the clevis. Mounted up the 4 chambers, which involved removing the cylinder, drilling and tapping all the holes. Studs in...

I got word yesterday my son and his wife are expecting twins in May. Sorta-kinda, WOW. Still early, much could change, but I am bursting at seams.

Hey Karl, I made mine to specs and they are just a skoosh to tight, I would give an extra .010" to make for smoother function. I still need to modify mine.

Quite a week already for me. You-Tube is an awesome library for me, I can sort through the various ways of learning something. Threading is not just a 1-2 thing. It takes math, resources, gear changes, measurements, and understanding of how it all goes together. I do not know much at all but...

Use the start a conversation link. I PM'd you anyhow so you can use that.

Sort of going in a different direction. Learning how to thread, this I hope will lead to making my own (bottoming too) tap. Therefore at this time, not anything going on, just learning new skill that I need to complete this without wasting a bunch of $$ on tap and die that is hard to get...