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  1. Jmccrack

    Rotary Table Alignment

    Have you fellas dialed in both ways? From the spindle to the bore then from the table to the spindle? On the subject of dividing plates I never use mine anymore. I put together the Rotary Controller from “World of Ward” and have not looked back. Check out his web site. The unit is a snap to...
  2. Jmccrack

    Rotary Table Alignment

    Hey guys check out this video from Joe Pi. I think most of us know him from his you tube videos Go to minute 12 and watch from there.
  3. Jmccrack

    Rotary Table Alignment

    On some or a lot of tables you will find the center of the RT centered off the spindle will be different than if you center the RT off the table. Check it out
  4. Jmccrack

    Rotary Table Alignment

    So did I and maybe some of the more expensive ones are. But just for giggles put a magnetic dial on the Rotary table and run the indicator around your spindle or better yet inside your spindle,you might be surprised
  5. Jmccrack

    Rotary Table Alignment

    Hey guys. All the conventional wisdom says to align a rotary table you put a dial or a coaxial indicator or a rod in the spinal and swept the center hole of the rotary table. Than rotate the spindle and 0,0 your table. OK..........After you do that put the dial on the rotary table top and sweep...
  6. Jmccrack

    Verical hit and miss engine

    Brian Please let me know how i can get a set of drawings for you hit and miss Tks Jerry McCracken PS Here is a pic of my car. 5 year build started driving it last year. 34 Ford
  7. Jmccrack

    Rotary Table C/W DRO-

    Hey guys the RT. Sold.
  8. Jmccrack

    Rotary Table C/W DRO-

    Yes I am. Vancouver Island
  9. Jmccrack

    Rotary Table C/W DRO-

    I have a surplus 4-3/8” Grizzly rotary table with attached DRO. It work beautifully. Vey tight and easy to use.Paid over $1200.00 CAD for it. Never really used on a job. I would like to get $750.00 for it. FOB here.
  10. Jmccrack

    Inventor wizard 6 Cyl Radial

    John VL I have made one rod a master now I can get the unit to rotate with out jamming up. But this still does not answer my question of the air valve. When I inject air into the system the way the brass valve is made air is being injected into 3 cylinders at the same time trying to drive them...
  11. Jmccrack

    Rotary table and Stepper Motor

    I am in the process of adding a stepper motor and driver to my 8” rotary table . The stepper I am going to use (Nema 23} has a shaft out both ends. I want to. 1-take the handle and dial off the rotary table 2-Mount the stepper to the RT shaft via flex cplg 3-Mount the handle and dial to the...
  12. Jmccrack

    Grizzly 4 3/4” Power Rotary table c/w DRO

    Wow good to know. I don’t use mine a lot but so far no problem I will start using it a bit more
  13. Jmccrack

    Grizzly 4 3/4” Power Rotary table c/w DRO

    Please stay in touch. I am using mine a bit more now
  14. Jmccrack

    Inventor wizard 6 Cyl Radial

    I will give it a try tks
  15. Jmccrack

    A Stothert & Pitt beam engine.

    Here are a couple of cylinders I did for Twin Cyl horizontal I built. Machining the body radius was interesting.
  16. Jmccrack

    Inventor wizard 6 Cyl Radial

    Yes the brass part is the valve pdf. I machined out the sectors to see if more than one power port was open at the same time. And indeed at tdc 3 are open. So when air is injected that should only drive that piston down the ports on either side are open as well. I triple checked my dimensions...
  17. Jmccrack

    A Stothert & Pitt beam engine.

    Very nice
  18. Jmccrack

    Air powered Hit and Miss Engine

    Hey Scott thanks for the help. I searched and I could not see any build log. I can find the post for the plans but that’s it.
  19. Jmccrack

    Air powered Hit and Miss Engine

    I am just starting to build this engine now. Is there a build log for it anywhere?
  20. Jmccrack

    A Stothert & Pitt beam engine.

    Great stuff. On one of my twin horizontals I am machined the steam chest into the cylinder itself it worked well
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