Nice job drawing that up!From what I can see, it appears it will function. Something to keep in mind. It doesn’t appear as though the pilot poppet will have a significant closing force. That may be ok, just remember that the pilot will need to close nearly instantly to be able to tune with the jet. I don’t use the adjustable jet in mine, I let the pilot poppet essentially block the inlet port which creates a very large closing force (on the pilot) and I can control its dwell via hammer strike. Also, be careful with the main poppet seat. If built as drawn (with the supply taking out a portion of the threads), it will significantly weaken the holding ability of the threads. One other area, be careful where you vent. The release is quite substantial. I had mine coming out the left side and it was quite distracting. (I shoot right handed) I have it drilled through to vent straight right now. Still loud but not as distracting. My valve works as I wanted, a high powered small bore easy to cock. It still needs a lot of study and tinkering to get the system balanced out, tunable and consistent. I’m nowhere near an expert on it for sure. I’m learning and designing at the same time. That’s fun for me, just keep that in mind that it’s not really a proven design. Good luck and glad you got your lathe sorted. Dave
Quote from: sb327 on March 19, 2022, 09:51:55 PMNice job drawing that up!From what I can see, it appears it will function. Something to keep in mind. It doesn’t appear as though the pilot poppet will have a significant closing force. That may be ok, just remember that the pilot will need to close nearly instantly to be able to tune with the jet. I don’t use the adjustable jet in mine, I let the pilot poppet essentially block the inlet port which creates a very large closing force (on the pilot) and I can control its dwell via hammer strike. Also, be careful with the main poppet seat. If built as drawn (with the supply taking out a portion of the threads), it will significantly weaken the holding ability of the threads. One other area, be careful where you vent. The release is quite substantial. I had mine coming out the left side and it was quite distracting. (I shoot right handed) I have it drilled through to vent straight right now. Still loud but not as distracting. My valve works as I wanted, a high powered small bore easy to cock. It still needs a lot of study and tinkering to get the system balanced out, tunable and consistent. I’m nowhere near an expert on it for sure. I’m learning and designing at the same time. That’s fun for me, just keep that in mind that it’s not really a proven design. Good luck and glad you got your lathe sorted. DaveThanks for the feedback! I'll be sure to add some space for a spring for the pilot valve then! About the cutouts in the threads: The actual version will have a finer thread pitch and at least 2-3 intact threads at the start. As the first few threads generally do the vast majority of the work, I don't think it should make too big of a difference. As drawn however, you are correct! Unfortunately Fusion 360 didn't let me do non-standard pitch threads without a bunch of extra work so I just used this for now.I actually hadn't thought of the outlet placement. I suppose downwards and to the right might be the least annoying as I'm right handed? Or just vent it through the valve stem and into the action of the gun, but that might not be a very good idea either?