<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>I've been nursing all kinds of injuries as well, gash in leg, burn on arm, gash on head, and I dropped a bar of lead on my ribs ! And of course my back is messed up. Aleve is a wonderful thing ! But at least I finally launched my sub off it's trailer and was able to motor around !</DIV><DIV> </DIV><DIV>Brian<BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: Alan via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] reinforcement<BR>Date: Wed, 22 Nov 2017 13:50:41 +1300<BR><BR></DIV><DIV>I'm here Pete,</DIV><DIV>also wondered if I had dropped out of the loop.</DIV><DIV>Hope the hand's not too bad Hank. I have part of a finger missing;</DIV><DIV>a set of metal rollers won that battle!</DIV><DIV>Been doing an on line ladder logic programming course to give me some</DIV><DIV>wisdom as to what plc to buy & what inputs I should be sourcing it.</DIV><DIV>Alan</DIV><DIV><BR></DIV><DIV><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><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 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 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 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 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 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">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 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">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 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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR></DIV></DIV>
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