<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I'm here Pete,</div><div id="AppleMailSignature">also wondered if I had dropped out of the loop.</div><div id="AppleMailSignature">Hope the hand's not too bad Hank. I have part of a finger missing;</div><div id="AppleMailSignature">a set of metal rollers won that battle!</div><div id="AppleMailSignature">Been doing an on line ladder logic programming course to give me some</div><div id="AppleMailSignature">wisdom as to what plc to buy & what inputs I should be sourcing it.</div><div id="AppleMailSignature">Alan</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"> <br><br>Sent from my iPad</div><div><br>On 22/11/2017, at 1:30 PM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Yes Pete, still here ;-) been nursing an injury to my hand, hand versus mitre saw cutting aluminum for my manipulator. Hand lost the battle. ;-(</div><div>Hank</div><div><br></div>
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On Tuesday, November 21, 2017, 4:33:50 PM MST, Pete Niedermayr via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div dir="ltr">Been quiet for a week now anybody home ?<br></div><div dir="ltr">--------------------------------------------<br></div><div dir="ltr">On Tue, 11/14/17, hank pronk via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><div dir="ltr"><br></div><div dir="ltr"> Subject: Re: [PSUBS-MAILIST] reinforcement<br></div><div dir="ltr"> To: "Sean T. Stevenson via Personal_Submersibles" <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br></div><div dir="ltr"> Date: Tuesday, November 14, 2017, 7:09 PM<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> Thanks' Sean,I will add<br></div><div dir="ltr"> thickness to the ring, for a bigger comfort zone. The<br></div><div dir="ltr"> flat plate is original to Gamma so no worries about it<br></div><div dir="ltr"> failing.Hank<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> On Tuesday, November 14, 2017,<br></div><div dir="ltr"> 5:53:37 PM MST, Sean T. Stevenson via Personal_Submersibles<br></div><div dir="ltr"> <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> If you<br></div><div dir="ltr"> were to meticulously torque the bolts to a sufficient<br></div><div dir="ltr"> preload to ensure that the connection could reliably carry<br></div><div dir="ltr"> shear forces, then technically it would carry some load;<br></div><div dir="ltr"> however, it is unwise to rely on that for the purpose of<br></div><div dir="ltr"> determining required penetration reinforcement - certainly<br></div><div dir="ltr"> if the forces are transferred entirely in shear. If instead,<br></div><div dir="ltr"> the plate was loaded in radial compression (i.e. inset into<br></div><div dir="ltr"> the seat and bearing on the outer cylindrical surface), then<br></div><div dir="ltr"> there would be some direct load transfer, but the exercise<br></div><div dir="ltr"> is academic. As with an acrylic window, design the ring<br></div><div dir="ltr"> under the assumption that the seat ring and associated<br></div><div dir="ltr"> reinforcement must carry all hull stresses. The flat plate<br></div><div dir="ltr"> that bolts on should then be designed in accordance with the<br></div><div dir="ltr"> rules for unstayed flat heads (ABS Steel Vessel Rules).<br></div><div dir="ltr"> <br></div><div dir="ltr"> Sean<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> Sent from ProtonMail mobile<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> -------- Original Message --------<br></div><div dir="ltr"> On Nov 14, 2017, 15:43, hank pronk via<br></div><div dir="ltr"> Personal_Submersibles <<br></div><div dir="ltr"> <a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><div dir="ltr"> HI Sean,I am<br></div><div dir="ltr"> taking your suggestion and ordering a heavy ring to mount my<br></div><div dir="ltr"> motor assembly to rather than use the original pipe<br></div><div dir="ltr"> assembly. . It will be like a port frame but with a<br></div><div dir="ltr"> 5\8 steel plate with a prop shaft tube weld to the<br></div><div dir="ltr"> centre with giant gussets. Normally I would weld in a ring<br></div><div dir="ltr"> that is several time heavier than it needs to be, but in<br></div><div dir="ltr"> this case I can not get crazy with weight. The weight is<br></div><div dir="ltr"> important because it is still an escape pod. I have sized<br></div><div dir="ltr"> the ring to be 20% heavier than the material removed from<br></div><div dir="ltr"> the sphere. I am assuming that the 5\8 plate that is<br></div><div dir="ltr"> bolted to the ring adds support to the ring. I realize the<br></div><div dir="ltr"> added plate is only as strong as the bolts securing it, but<br></div><div dir="ltr"> there must be a benefit, or does this not<br></div><div dir="ltr"> count? Hank_______________________________________________<br></div><div dir="ltr"> Personal_Submersibles mailing list<br></div><div dir="ltr"> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"> _______________________________________________<br></div><div dir="ltr"> Personal_Submersibles mailing list<br></div><div dir="ltr"> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr"> <br></div><div dir="ltr"> -----Inline Attachment Follows-----<br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div></div>
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