[PSUBS-MAILIST] Group Help Request

Joe Perkel josephperkel at yahoo.com
Mon Oct 28 14:48:54 EDT 2013 

Ok, hose clamp style got it.

I have to learn a bit about ABS properties. 
I sure could spit out all manner of goodies with my
Own machine. Instrument panels etc

Sent from my overpriced 
iPhone

On Oct 28, 2013, at 2:20 PM, Alec Smyth <alecsmyth at gmail.com> wrote:

> Yep. Also, I would avoid the set screw idea. Just make a cylinder that hugs the motor can but has a lengthwise slit, and screws to close that gap. The set screws will initiate a nuisance rust point on the can, and a closed cylinder will hold tighter in any case.
> 
> 
> 
> On Mon, Oct 28, 2013 at 2:10 PM, Joe Perkel <josephperkel at yahoo.com> wrote:
>> 
>> Alec,
>> 
>> Don't count it out just yet, I went to Gavin via the link you provided and had an epiphany! Note well the inside surface vs the outside surface of that Kort nozzle!!
>> 
>> The model I quoted was solid material!! 
>> 
>> I know what I'm doing tonight!
>> 
>> 
>> Joe
>> 
>> Sent from Yahoo! Mail for iPad
>> 
>> From: Alec Smyth <alecsmyth at gmail.com>; 
>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>; 
>> Subject: Re: [PSUBS-MAILIST] Group Help Request 
>> Sent: Mon, Oct 28, 2013 5:28:50 PM 
>> 
>> Sounds like David has just saved me the work of taking a 101 apart and measuring it, thanks! As for the 101 prop size, it's 11" diameter. Before you go off spending $760 on a nozzle, you might want to look up these folks: http://www.gavinscooters.com/ I can't help notice Emile used a Gavin, and it looks like Gavin Scooters, Inc. is right in your neighborhood.
>> 
>> Best,
>> 
>> Alec
>> 
>> 
>> On Mon, Oct 28, 2013 at 12:43 PM, Joe Perkel <josephperkel at yahoo.com> wrote:
>>> David,
>>>  
>>> Thats spectacular, thanks!
>>>  
>>> Joe
>>> 
>>> From: David Colombo <seaquestor at gmail.com>
>>> 
>>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>>> Sent: Monday, October 28, 2013 12:12 PM
>>> 
>>> Subject: Re: [PSUBS-MAILIST] Group Help Request
>>> 
>>> 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
>>> http://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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>> 
>> 
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