[PSUBS-MAILIST] electric manipulator

[hank pronk via Personal_Submersibles]

 Hi Rick,My vertical lathe is sitting on a solid foundation now, I had to excavate 4 feet down and pour a concrete column up from virgin ground to support the Lathe.  I had to extend the front of the shop also, I don't know what I was thinking ;-)  I have not gone further with the UT of the welds.  I am focusing my efforts on Gamma and my renovation project.  No need to pay for a manipulator, I will be happy to let you copy it  if it works out.  Hank
  On Sunday, November 12, 2017, 4:02:15 PM MST, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hank Simple is good. looking forward to following this as I might be paying you to build me one if it works out well. Did you ever locate any one to UT your welds yet and did you get your floor fixed from the weight of that giant milling machine?Rick 

On Sun, Nov 12, 2017 at 10:49 AM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Rick, you can use sea water in an aluminum or composite  cylinder  if you use a water pump for generating the pressure.  There are water pressure manipulators out there.  I am building a full electric manipulator to reduce weight and I think it will be much simpler than a hydraulic manipulator.  Hank
    On Sunday, November 12, 2017, 11:34:23 AM MST, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hank,I was told that I could use the power tilt rams for an outboard motor on a manipulator and replace the oil with salt water but have not pursued it further as that project is still a ways away. Rick
On Sun, Nov 12, 2017 at 1:36 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi All,The electric manipulator project is on hold because I am not happy with the home built actuators.  I made two, one is linear and the other is rotary.  They work just fine but are under powered.  I thought I could compensate for the low power by spring loading the members.  This helps a lot, but in testing I find it inadequate.  I bought a trim tab  actuator that is fully submersible that I can experiment with.  I hope to simply remove one o-ring from the shaft and air compensate it.  One nice feature is the screw system requires no limit switches.  The actuator is cheaper to buy than build from scratch.  Luckily the new actuator is the same size as what I built, so they will fit the manipulator.Hank
______________________________ _________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs. org
http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles



_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
  _______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles

_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20171112/38f9e0f0/attachment-0001.html>