<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div><span></span></div><div></div><div id="yui_3_16_0_1_1429711648325_3712" dir="ltr"> Alan, the machine shop sourced a nylon cylindrical block that they cut into two sections. Used CNC machine center to shape. Surface finish came out very nice. The issue on making these Kort nozzles to me is unit volume. If there was enough volume, then we could design an injection mold and make these dirt cheap but making a mold in not easy nor cheap. I sent a drawing of the kort nozzle to Vance a while back and he was talking with his machine shop on different ways to make the nozzle. He to was looking into doing a FRP layup. The key to making a kort nozzle efficient is having the correct interior and exterior curved profiles (along with the right prop). So to me if you had access to a lathe, you could do a FRP layup of a ring and turn the profiles. You could also layup female molds and either do layup on these or try and cast them. For me it was easier to send the STEP file to my world class machinist and let him CNC the parts. </div><div id="yui_3_16_0_1_1429711648325_3890" dir="ltr"><br></div><div id="yui_3_16_0_1_1429711648325_3891" dir="ltr">As to material, after looking at a bunch of different metals and plastics, I ended up going with nylon. It machines good, has good dimensional strength and does not imbibe a lot water and does not require any final coating as is not bad on cost and they could supply it in black. Looked at 6061-T6 aluminum or 7071. My machinist raves about 7071 says it machines very nicely and is stronger. I did not go with aluminum for the R300 upgrade because of the weight vs nylon and I would have to anodize or powder coat. </div><div id="yui_3_16_0_1_1429711648325_4020" dir="ltr"><br></div><div id="yui_3_16_0_1_1429711648325_4024" dir="ltr">Alec has be doing a lot of work lately on his rapid prototyping. Maybe he could comment on materials and if these kort nozzles could be fabricate on equipment like his.</div><div id="yui_3_16_0_1_1429711648325_4046" dir="ltr"><br></div><div id="yui_3_16_0_1_1429711648325_4047" dir="ltr">Cliff </div><div id="yui_3_16_0_1_1429711648325_3951" dir="ltr"><br></div><div id="yui_3_16_0_1_1429711648325_3950" dir="ltr"> </div><div id="yui_3_16_0_1_1429711648325_3708"><br><br><br><br><div id="yui_3_16_0_1_1429711648325_3707"><br>Cliff Redus<br>Redus Engineering<br>USA mobile: 830-931-1280<br>cliffordredus@sbcglobal.com </div></div><br> <div id="yui_3_16_0_1_1429711648325_3992" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div id="yui_3_16_0_1_1429711648325_3991" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1429711648325_3998" dir="ltr"> <hr size="1" id="yui_3_16_0_1_1429711648325_4119"> <font id="yui_3_16_0_1_1429711648325_4122" face="Arial" size="2"> <b id="yui_3_16_0_1_1429711648325_4121"><span id="yui_3_16_0_1_1429711648325_4120" style="font-weight: bold;">From:</span></b> Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br> <b id="yui_3_16_0_1_1429711648325_4124"><span id="yui_3_16_0_1_1429711648325_4123" style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, April 22, 2015 2:01 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] minn-kota cabling to hull<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1429711648325_3990"><br><div id="yiv9002305715"><div id="yui_3_16_0_1_1429711648325_3989"><div id="yui_3_16_0_1_1429711648325_3988" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span>Cliff,</span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4111">there was a thread a while back on making kort nozzles,</span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4104">how did the machine shop make yours? Was it a block of nylon </span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4126">they machined them out of or did they mold the nylon to a rough</span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yui_3_16_0_1_1429711648325_4125">shape & machine that?</span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4171">I made mine by finding a suitable bucket, wrapping fiber glass around </span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4228">the bucket then finishing by hand. I am thinking you could make carbon </span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span id="yiv9002305715yui_3_16_0_1_1429685530006_4260">fiber roughs this way & send them off to be machined.</span></div><div id="yiv9002305715yui_3_16_0_1_1429685530006_4062" dir="ltr"><span>Cheers Alan</span></div><br clear="none"> <div id="yiv9002305715yui_3_16_0_1_1429685530006_4109" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yiv9002305715yui_3_16_0_1_1429685530006_4108" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div class="qtdSeparateBR"><br><br></div><div class="yiv9002305715yqt7421806403" id="yiv9002305715yqt72151"><div id="yiv9002305715yui_3_16_0_1_1429685530006_4107" dir="ltr"> <hr size="1" id="yiv9002305715yui_3_16_0_1_1429685530006_4125"> <font id="yiv9002305715yui_3_16_0_1_1429685530006_4187" face="Arial" size="2"> <b id="yui_3_16_0_1_1429711648325_4127"><span id="yui_3_16_0_1_1429711648325_4126" style="font-weight: bold;">From:</span></b> Cliff Redus via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, April 22, 2015 7:22 AM<br clear="none"> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] minn-kota cabling to hull<br clear="none"> </font> </div> <div class="yiv9002305715y_msg_container" id="yiv9002305715yui_3_16_0_1_1429685530006_4261"><br clear="none"><div id="yiv9002305715"><div id="yiv9002305715yui_3_16_0_1_1429685530006_4263"><div id="yiv9002305715yui_3_16_0_1_1429685530006_4262" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span></span></div><div></div><div id="yiv9002305715yui_3_16_0_1_1429634299539_55369"><br clear="none"><div id="yiv9002305715"><div id="yiv9002305715yui_3_16_0_1_1429634299539_55378"><div id="yiv9002305715yui_3_16_0_1_1429634299539_55377" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span></span></div><div></div><div id="yiv9002305715yui_3_16_0_1_1429560052638_3301">Jon, I have been making some progress on my Minnn-Kota 101 thruster project. The modified thrusters (added Kort Nozzle, Subconn electrical penetrator and pressure compensation port). To see photos go to <a id="yiv9002305715yui_3_16_0_1_1429560052638_3716" href="http://www.psubs.org/" target="_blank" rel="nofollow" shape="rect"><font color="#0066cc">http://www.psubs.org/</font></a>, then hit projects and photos section, on the projects page under find at the top of this page, change from submersible to research and hit search. The photos are listed under MK-101 thruster.</div><div id="yiv9002305715yui_3_16_0_1_1429560052638_3434"><br clear="none"></div><div id="yiv9002305715yui_3_16_0_1_1429560052638_3487" dir="ltr">The thrusters are ready to go on the boat but I am in the process of repainting the exterior and interior due to hull mods and then I have to put everything back together. I hope to be back in the water this summer. Still need to do some performance testing of the thrusters.</div><div id="yiv9002305715yui_3_16_0_1_1429560052638_3486" dir="ltr"><br clear="none"></div><div id="yiv9002305715yui_3_16_0_1_1429560052638_3485" dir="ltr">Cliff<br clear="none"></div></div></div></div></div><div id="yiv9002305715yui_3_16_0_1_1429634299539_55332"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><div id="yiv9002305715yui_3_16_0_1_1429634299539_55331"><br clear="none">Cliff Redus<br clear="none">Redus Engineering<br clear="none">USA mobile: 830-931-1280<br clear="none">cliffordredus@sbcglobal.com </div></div><div id="yiv9002305715yui_3_16_0_1_1429634299539_55374" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"><div id="yiv9002305715yui_3_16_0_1_1429634299539_55373" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"><div class="yiv9002305715y_msg_container" id="yiv9002305715yui_3_16_0_1_1429634299539_55376"><br clear="none"></div> </div> </div> </div></div></div><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"><br clear="none"></div></div> </div> </div> </div></div></div><br><div class="yqt7421806403" id="yqt75055">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></body></html>