<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>Only thing is I have to be sure the oil I use is non-conductive.</div><div>Thanks,</div><div>Scott Waters</div><div><br></div><div><br></div><div><div style="font-size:9px;color:#575757">Sent from my U.S. Cellular® Smartphone</div></div><div></div><br><br>-------- Original message --------<br>From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> <br>Date:02/11/2015 2:39 PM (GMT-06:00) <br>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br>Cc: <br>Subject: Re: [PSUBS-MAILIST] Manipulator <br><br><br>Scott,<br>All oils used on the water should be environmentally friendly. I use vegetable oil in my launch cart.<br>Hank --------------------------------------------<br>On Wed, 2/11/15, swaters@waters-ks.com via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br><br> Subject: Re: [PSUBS-MAILIST] Manipulator<br> To: "Personal Submersibles General Discussion" <personal_submersibles@psubs.org><br> Received: Wednesday, February 11, 2015, 2:17 PM<br> <br> Alan, I<br> looked into air, but it presents some problems. One is<br> compensating it otherwise you will get less preformance<br> based on depth. Two is they are not as stiff and have give<br> as well as less fine control. Also another problem is if you<br> used compressed air, you have a limiting factor or you could<br> use a compressor, but have to have a bank to draw<br> from.The main draw back of hydraulic for me was<br> the mess and polution factor. Otherwise, hydraulic seems to<br> be the way to go.I am hoping to come up with a<br> manipulator design that can be used on most psubs that is<br> easy and affordable.Thanks,Scott<br> Waters<br> <br> Sent from my U.S.<br> Cellular® Smartphone<br> <br> -------- Original message<br> --------<br> From: Alan James via<br> Personal_Submersibles<br> <personal_submersibles@psubs.org> <br> Date:02/11/2015 12:52 PM (GMT-06:00) <br> To: Personal Submersibles General Discussion<br> <personal_submersibles@psubs.org> <br> Cc:<br> <br> Subject: Re: [PSUBS-MAILIST] Manipulator<br> <br> <br> Hank,why not<br> just use air if the pneumatic cylinders are rated for 150<br> psi.If they<br> are rated for 150 psi it would be assumed that their<br> mechanical strengthwould<br> match the load they can lift with 150 psi<br> also.Is there<br> any advantage other than the o ring working both ways to<br> stop wateringress,<br> as you have said previously. Does anyone else use them in<br> placeof<br> hydraulic cylinders?Alan<br> <br> From: hank pronk via<br> Personal_Submersibles<br> <personal_submersibles@psubs.org><br> <br> To: Personal<br> Submersibles General Discussion<br> <personal_submersibles@psubs.org> <br> <br> Sent:<br> Thursday, February 12, 2015 7:21 AM<br> <br> Subject: Re:<br> [PSUBS-MAILIST] Manipulator<br> <br> <br> <br> No problems, Gamma has air<br> cylinders and at 1,000 feet the hydraulic pump is set at<br> 1,100 psi. Your K sub can have a pressure setting of 500<br> or less and work just fine. Remember, your not lifting a lot<br> just the arm plus a bit.<br> Hank--------------------------------------------<br> On Wed, 2/11/15, swaters@waters-ks.com<br> via Personal_Submersibles <personal_submersibles@psubs.org><br> wrote:<br> <br> Subject: Re:<br> [PSUBS-MAILIST] Manipulator<br> To:<br> "Personal Submersibles General Discussion" <personal_submersibles@psubs.org><br> Received: Wednesday, February 11, 2015, 12:23<br> PM<br> <br> Do you<br> have any problem with over pressure though?<br> The pnuematic<br> cylinders are rated to 150psi<br> with air and 1000 psi with<br> <br> oil. Thanks,Scott<br> Waters<br> <br> <br> Sent from my U.S.<br> <br> Cellular® Smartphone<br> <br> <br> -------- Original message<br> --------<br> From: hank pronk via<br> <br> Personal_Submersibles<br> <personal_submersibles@psubs.org><br> <br> Date:02/11/2015 11:12 AM (GMT-06:00)<br> <br> To: personal_submersibles<br> <br> <personal_submersibles@psubs.org><br> <br> Cc:<br> <br> <br> Subject: Re: [PSUBS-MAILIST] Manipulator<br> <br> <br> <br> hi Scott<br> use a<br> hydraulic pump just the<br> same as if you used hydraulic<br> cylinders<br> Hank <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> From:<br> <br> <br> <br> swaters@waters-ks.com<br> via<br> Personal_Submersibles<br> <br> <personal_submersibles@psubs.org>; <br> <br> <br> <br> <br> <br> <br> To:<br> <br> <br> <br> psubs<br> <personal_submersibles@psubs.org>; <br> <br> <br> <br> <br> <br> <br> <br> <br> Subject:<br> <br> <br> [PSUBS-MAILIST] Manipulator <br> <br> <br> <br> <br> <br> Sent:<br> <br> <br> <br> Wed, Feb 11, 2015 3:39:07 PM <br> <br> <br> <br> <br> <br> <br> <br> Hank,I know you<br> said to use<br> pnumatic cylinders for the manipulator arm.<br> What kind of pump do you<br> <br> use?Thanks,Scott Waters<br> <br> <br> Sent from my U.S.<br> Cellular®<br> Smartphone<br> <br> <br> <br> <br> <br> -----Inline Attachment Follows-----<br> <br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br> <br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br> <br> <br> <br> -----Inline Attachment Follows-----<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br> <br><br>_______________________________________________<br>Personal_Submersibles mailing list<br>Personal_Submersibles@psubs.org<br>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br><br></body></html>