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Hey folks. This first photo is the shaft the rocking levers attach to, with it's accoutrements. Drill rod. Started on the exhaust chambers. Dang I don't want to have to buy an 11/16-32 tap and die for just these. I have a friend who has the same lathe as I do and knows how to thread, so...

Thanks Phil. Been making several small parts, washers, nuts, a shaft. Not much to photo or discuss, all simple one of type stuff. The next big step is the exhaust chambers and getting my head wrapped around the drawings is proving to be challenging.

Just went and tried stuff. Settled on .020" music wire over a 1/8 mandrel. Made length to suit just closing valve. Minimal pressure at closed.

For those that have already built. .... The plans do not have any numbers for the wire size, spring length, or mandrel size for the valve springs. Any of you folks remember? Thanks

No idea how many hours this took to sort out. Was totally unable to get the valves to seat with the guides in place. Seated just fine without them. Redid and same problem. Then the 'thinkin' on it began'. So if the guide is the issue, and there is spare room down in the cavity, this can be...

So this problem is due to the guides not being true to the seat face, but just the guide as without the guide in place the valve seals. There is .035" difference in plans from valve stem being less diameter by that over the reamed guide. I did not adhere to that, I have about .002". Got to...

Not dead here, just having issue with the guide, stem, and seal. ...

Valve guides should have been an easy one two. Instead it was a hellish 6 pair before I got a pair that I could use. Funny how some of the simple stuff can be so difficult. But they got done and reamed. That rod is just a piece of the stainless that will be used for the stem of the valve...

Did either of you try loctite in addition to the key?

Working slowly on explosion chambers. Made the tops from hard 1/8 brass. Did the glue on thing and drilled a pair of holes to tap and use as insurance against the cover getting loose and messing with alignment. All drilled and tapped to 2.5 mm. Then drilled the valve stem hole from the...

Ah, so that is why you had the plugs for those holes. That is a way, but Gary says it has too much compression, so this will also help along with making the stroke as equal as possible for balance purposes. Kind of chilling a bit on this, the last fishing is as soon as the fish get here and...

Maybe I should do the basic exhaust chambers too so it is only necessary to disassemble this on time for these processes. Will still need to remove the piston and do some creative removal of material from the solid chunk. Apparently one has to think about the fact there is a shaft on one side...

The skids are essentially done, will put some planking in some areas down the road. Don't have to worry about it tipping over onto the flywheel side and fall off the bench anymore now. After several days of research, conversation with Phil, and looking ahead to parts and fixin's that the...

Okay, been several days without an update. All excuses, no good reasons. This will be a rather long one I think. First, I had someone suggest I tell more about my process for a given part. I will try, that is the best I can do, but remember I am self-taught and have no formal machining...

Interesting point. Once I screwed up a flywheel so I made a plug for it that was a press fit. This reminds me of that. I will be most interested to hear how the hole process went and if that also shows on the other side if faced. Very curious one here indeed.

Bizarre, if it were not for that perfect offset circle I would have said hard spots from chilling. Coming back to your drill bit wandering, I find that using cobalt bits will resolve that unless there are very unequal hard spots.

Karl have a photo for you that is in focus. Of note, the upper part that has been cut down is slightly slanted so as to not touch the bearing surface. Then after the 'tooth' is set to center of the strap bearing surface, just move the tool a skosh toward the cut every few passes or so, I...

Karl, best I have is the one above which is fuzzy. I hear you on busy, fish are distracting me here

Feel like crap today, muscle spasms in neck so didn't get so much done. Piddled around with checking the gear mesh and that was great, me happy camper about that. Also got that powder coated. Decided to at least look at eccentric. Ended up doing one after all. Karl, photos to possibly help...

Well, my plan is different, as usual. I have a boring head and an already made cutter for the undercut. If I remember correctly I need to make it a bit narrower. But. Having done this, this way, before, and it was successful, that is the plan. Once you have center it isn't too hard to...