<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>My plan was to use O ring seal. I am using a comoensated system.</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:01/21/2015 9:41 AM (GMT-06:00) <br>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br>Subject: Re: [PSUBS-MAILIST] Manipulator arm <br><br><br>Scott,<br>You need to decide on what type of hyd system you are going with before you dive into cylinders. If you are going with a pressure compensated system, you can use cylinders with a wiper seals on the shafts. If you not pressure compensating, then use cylinders with o-ring seals on the shafts. I would use o-ring sealed shafts regardless.<br>Hank--------------------------------------------<br>On Wed, 1/21/15, swaters@waters-ks.com via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br><br> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br> To: "Personal Submersibles General Discussion" <personal_submersibles@psubs.org><br> Received: Wednesday, January 21, 2015, 8:25 AM<br> <br> Gotcha.<br> I got about 8 different suppliers I have found so far with<br> SS cylinders. I think I'll order a few to play with. I<br> am also planning on using electric silionoids for<br> controlling the valves.Thanks,Scott<br> Waters<br> <br> Sent<br> from my U.S. Cellular® Smartphone<br> <br> -------- Original message --------<br> From: hank pronk via Personal_Submersibles <br> Date:01/21/2015 6:54 AM (GMT-06:00) <br> To: Personal Submersibles General Discussion <br> Subject: Re: [PSUBS-MAILIST] Manipulator arm <br> <br> <br> Scott,<br> Gamma uses air cylinders with hydraulic fluid and<br> pump. The hydraulic system is very standard except it<br> uses air cylinders in place of hydraulic cylinders. <br> Hank--------------------------------------------<br> On Tue, 1/20/15, swaters@waters-ks.com via<br> Personal_Submersibles<br> <personal_submersibles@psubs.org> wrote:<br> <br> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br> To: "Personal Submersibles General Discussion"<br> <personal_submersibles@psubs.org><br> Received: Tuesday, January 20, 2015, 10:27 PM<br> <br> <br> Is Gamma all air cylinders? Do you just use<br> a air compressor? What happens to the air once it is in<br> the<br> cylinder and you want to lower the cylinder? Is it<br> recompressed or somehow expelled? I really don't know<br> crap about pnematics. Haha. Why do all the subs use<br> hydrolics and not air. For example<br> hydro-lek?Thanks,Scott<br> Waters<br> <br> Sent<br> from my U.S. Cellular® Smartphone<br> <br> -------- Original message --------<br> From: hank pronk via Personal_Submersibles <br> Date:01/20/2015 9:06 PM (GMT-06:00) <br> To: Personal Submersibles General Discussion <br> Subject: Re: [PSUBS-MAILIST] Manipulator arm <br> <br> <br> Scott,<br> Not sure why you want hydraulic cylinders. You want<br> air cylinders, they are light weight and all<br> aluminum. <br> If you use 2 in bore air cylinders you can run on a 500<br> psi<br> system. Also air cylinders typically have 5/8 rods<br> and<br> that is the most important part. The rod size is<br> what<br> the water pressure is pushing back against you<br> system. <br> Air cylinders have a single o ring on the piston and are<br> cheap and easy to replace. If you want ss rods then just<br> replace the chrome rods when they wear out. I made<br> my<br> own rods for Gamma, easy peezy.<br> Hank--------------------------------------------<br> On Tue, 1/20/15, swaters@waters-ks.com via<br> Personal_Submersibles<br> <personal_submersibles@psubs.org> wrote:<br> <br> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br> To: "Personal Submersibles General<br> Discussion"<br> <personal_submersibles@psubs.org><br> Received: Tuesday, January 20, 2015, 8:52 PM<br> <br> Hydrolic.<br> Also what size bore does yoursub have<br> Hank?Thanks,Scott Waters<br> <br> Sent<br> from my U.S. Cellular® Smartphone<br> <br> -------- Original message --------<br> From: hank pronk via Personal_Submersibles <br> Date:01/20/2015 7:34 PM (GMT-06:00) <br> To: Personal Submersibles General Discussion <br> Subject: Re: [PSUBS-MAILIST] Manipulator arm <br> <br> <br> Are you using hydraulic cylinders or air cylinders.<br> Hank--------------------------------------------<br> On Tue, 1/20/15, swaters@waters-ks.com via<br> Personal_Submersibles<br> <personal_submersibles@psubs.org> wrote:<br> <br> Subject: [PSUBS-MAILIST] Manipulator arm<br> To: "psubs"<br> <personal_submersibles@psubs.org><br> Received: Tuesday, January 20, 2015, 7:51 PM<br> <br> Does<br> anyone have a reccomendation on a source for<br> hydrolic<br> cylinders? Ofcourse there are tons online, just<br> wondering<br> if<br> someone has a particular place they like to get<br> them.Thanks,Scott Waters<br> <br> Sent<br> from my U.S. Cellular®<br> Smartphone<br> -----Inline Attachment Follows-----<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> <br> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br> <br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> <br> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br> <br> <br> -----Inline Attachment Follows-----<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> Personal_Submersibles@psubs.org<br> <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> -----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> <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>