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I realize what you say is true, but for what we are doing and for the length of time it will be in service, it will work. It is mostly for software development so the logic and algorithms can be proven and demonstrated on a little test engine. Big engies already have big expensive valves
After it homes, softly, on each startup it will know where it is and not go to the ends of travel during operation. Pushing the plastic nut in and out of the natural gas fuel stream will load nothing. It is more of an obstruction than a
Does the stainless lead material drill nicely?
Linear space is limited, but I could use a larger shaft. How does this sound? We use your plastic nuts for the plugs, mill them flat on the sides and maybe all four sides. Put a piece of 3/8 lead screw in a lathe collet, drill and ream it to the size of the stepper shaft. Glue or set screw it solid. There would be threads almost all the way to the stepper body. It is not important that the attachment is perfectly coaxial. It can wobble around in the hole a bit and still do the job.
How much torque will it take to turn the shaft in the nut?
