[PSUBS-MAILIST] Group Help Request

Mon Oct 28 12:12:03 EDT 2013

Hey Joe,
I will send you my cad files on the Minkota 101 Saltwater. I have measured
my new 101s and weed 2 prop.  I have also worked out the Marin 37 Kort
nozzel design and attachment to the thruster for use on the SeaQuestor
project. I will be most likely sending it to my fiberglass fabricator who
will cut the assembly in foam  on their 5 axis cnc, ready for a fiberglass
overlay.

Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com

On Mon, Oct 28, 2013 at 8:03 AM, <jimtoddpsub at aol.com> wrote:

> Joe,
> Since you asked: http://en.wikipedia.org/wiki/Cast_urethanes
> Jim
>  -----Original Message-----
> From: Joe Perkel <josephperkel at yahoo.com>
> To: Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> Sent: Mon, Oct 28, 2013 9:54 am
> Subject: Re: [PSUBS-MAILIST] Group Help Request
>
>   Ok gentlemen first round of quotes for a Marin 19A Nozzle only in ABS
> plastic (White) for a 6" prop and not accounting for prop clearance is
> $760. This is using FDM process.
>
> Same nozzle in cast urethane,.. $ 3,700,.. what is cast urethane? Dont
> want it anyway!!!
>
> I need to know the exact diameter of a Weedless wedge 2 prop for a 4"
> motor in order to get the quote exact.
>
> Joe
>
>    *From:* hank pronk <hanker_20032000 at yahoo.ca>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Monday, October 28, 2013 10:28 AM
> *Subject:* Re: [PSUBS-MAILIST] Group Help Request
>
>   Scott,
> I use weights from a weight lifting set, the steel ones.  They could go
> outside on a peg so to speak.  The only problem is you want them at the
> bottom of the sub.  That means hauling the sub unless you want to get wet.
> Maybe a slide system.    I thought the same thing to put the air outside,
> that would kill my sleek and slippery-ness.  :-)
> Hank
>
>    *From:* swaters <swaters at waters-ks.com>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Monday, October 28, 2013 7:46:30 AM
> *Subject:* Re: [PSUBS-MAILIST] Group Help Request
>    Hatch closure from both sides deffenetly a good one. I would say
> adjustable exterior weights. I hate the idea on chucking weights on the
> floor and then sitting on them. I am torn between that and moving the hp
> air tanks to the exterior to allow alot more room on the inside.
> Thanks,
> Scott Waters
>
>
>
>
>
>  Sent from my U.S. Cellular© Smartphone
>  hank pronk <hanker_20032000 at yahoo.ca> wrote:
>  Joe,
> Why don't you take a vote on what the best improvement would be for a
> k sub or alike.  My vote would be for a hatch closure from both sides.
> Hank
>
>   *From:* Joe Perkel <josephperkel at yahoo.com>
> *To:* "personal_submersibles at psubs.org" <personal_submersibles at psubs.org>
> *Sent:* Monday, October 28, 2013 5:41:42 AM
> *Subject:* Re: [PSUBS-MAILIST] Group Help Request
>    I just love the world in which we live! Look what I found while
> waiting to take my daughter to school,..
> http://www.quickparts.com/QuickQuote.aspx
>
> Isn't that just the coolest thing! The Star Trek synthesizer in the
> real world.
>
> Joe
>
> Sent from Yahoo! Mail for iPad
>   *From: *Marc de Piolenc <piolenc at archivale.com>; *To: *<
> personal_submersibles at psubs.org>; *Subject: *Re: [PSUBS-MAILIST] Group
> Help Request *Sent: *Mon, Oct 28, 2013 10:46:58 AM
>   Never thought much about doing it at small scale.
>
> I suppose I would set up something like a wood lathe or a potter's
> wheel
> and work in some very soft material like low-density foam. Once I had
> the shape that I wanted, I suppose one could pour a mold around the
> master, melt or dissolve out the pattern and cast the final part in some
> suitable plastic, or even in aluminum if you were ambitious.
>
> 3D printing seems like the ultimate way to do it, though - the accuracy
> available is already better than what we would need, and if the inital
> results are not perfect, making changes and printing out another
> prototype is very quick.
>
> Marc
>
> On 10/28/2013 6:13 PM, Joe Perkel wrote:
> > How can a home builder maintain that contour 360 Deg out of "X" material?
> >
> > Joe
> >
> > Sent from my overpriced
> > iPhone
> >
> > On Oct 28, 2013, at 2:57 AM, Marc de Piolenc <piolenc at archivale.com>
> wrote:
> >
> >> Quick clarification: a properly contoured Kort nozzle, MARRIED TO A
> MATCHING PROPELLER, will increase static and low-speed thrust. Of course it
> won't increase power, since that comes from your motor. If you just
> put a shroud around your existing prop, you will be disappointed, and a
> shroud that doesn't do the job is overpriced unless it's free!
> Key ingredients for success:
> >>
> >> Prop matched to the shroud
> >> Shroud matched to the speed and thrust requirement of the vehicle
> >> Motor matched to the resulting prop
> >>
> >> Marc
> >>
> >> On 10/28/2013 8:33 AM, Jon Wallace wrote:
> >>>
> >>> What is the cost of having a true Kort nozzle machined by a CNC? I
> think
> >>> a 30% improvement in thrust for $30 would be great but I suspect
> >>> machining a Kort is going to equate to many hundreds of dollars, if not
> >>> reaching beyond a thousand.  When I look at the Snoopy underwater
> videos
> >>> it is difficult to imagine a kort nozzle really making any difference
> in
> >>> the operational experience given that the motors are operating very
> >>> slowly and pushing Snoopy around at about 2 knots (estimated).  The
> >>> props are designed for power, but that's what we want
> underwater.  True,
> >>> a kort nozzle would increase that power but what is the return on the
> >>> cost?  In other words, on a road with a speed limit of 30mph and no
> >>> passing zones it doesn't matter whether you have a 1.6 liter or
> 5.4
> >>> liter engine under the hood does it?
> >> --
> >> Archivale catalog: http://www.archivale.com/catalog
> >> Polymath weblog: http://www.archivale.com/weblog
> >> Translations (ProZ profile): http://www.proz.com/profile/639380
> >> Translations (BeWords profile): http://www.bewords.com/Marc-dePiolenc
> >> Ducted fans: http://massflow.archivale.com/
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> >
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> > -- Archivale catalog: http://www.archivale.com/catalog Polymath weblog:
> http://www.archivale.com/weblog Translations (ProZ profile):
> http://www.proz.com/profile/639380 Translations (BeWords profile):
> http://www.bewords.com/Marc-dePiolenc Ducted fans:
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