[PSUBS-MAILIST] MK 101 Kort Nozzle Assembly

[Joe Perkel]

Alec,
 
I'll see if I can simplify the collar with off the shelf stock. The ID / OD match for the motor housing may be tough and the other issue being enough material "bite" to thread those long screws. But, I'll look around maybe doublers, spacers, etc?
 
Joe


________________________________
From: Private <alecsmyth at gmail.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Friday, November 1, 2013 10:23 PM
Subject: Re: [PSUBS-MAILIST] MK 101 Kort Nozzle Assembly



That's exactly what I've got on Snoopy. I just made the hub to slide over the motor can. Then make a thin longitudinal cut, but just along one side. The cut need only offer a very tiny movement for it to clamp tight. I have made two that way, and you can tighten either with integral bolts or just putting screw-driven hose clamps over the hub. The one thing I'd also suggest is making the hub cylindrical instead of the nice tapered section you drew. Not that I don't like it, but fabrication would be a bear. If it were me I'd make the hub out of pipe, not milling it which is what the those curves seem to imply. You can use a piece of pipe and chamfer the angles to make is a little smoother...




On Nov 1, 2013, at 8:25 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:


Joe,
>I would make the hub from one piece of material instead of two.  Then have the tightening method the same as you have now but on one side only.  Less time to fabricate also.  
>Hank
>
>
>
>On Friday, November 1, 2013 6:17:03 PM, Alan James <alanlindsayjames at yahoo.com> wrote:
>
>Hi Joe,
>If I'm seeing it right, it looks like the struts are an integral part of the 2 piece retainer clamp,
>so you would have to attach the retainer clamp & struts to the motor first & then bolt
>the kort nozzle to the struts. This would be impossible as you have slots in the kort nozzle
>that the struts fit in to.
>Maybe you could use the motor stem that the wiring comes out of as a locking point (as I did)
>and you could make the unit one piece & slide it on. 
>Alan
>
>
>
>________________________________
>From: Joe Perkel <josephperkel at yahoo.com>
>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>Sent: Saturday, November 2, 2013 12:47 PM
>Subject: Re: [PSUBS-MAILIST] MK 101 Kort Nozzle Assembly
>
>
>
>Hank,
> 
>I'm relying on 4 equally torqued bolts. What other method would you suggest, Im open here?
> 
>I couldn't figure out how to guarantee a firm grip on the motor housing otherwise.
> 
>Joe
>
>
>
>________________________________
>From: hank pronk <hanker_20032000 at yahoo.ca>
>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>Sent: Friday, November 1, 2013 7:40 PM
>Subject: Re: [PSUBS-MAILIST] MK 101 Kort Nozzle Assembly
>
>
>
>Hi Joe,
>Nice job, but I see a problem.  The mounting hub looks like it has a gap on both sides of the two hub pieces.  If those two pieces (hub) do not come in full contact on both sides, it will distort the nozzle.  
>Hank 
>
>
>
>On Friday, November 1, 2013 2:39:00 PM, Jon Wallace <jonw at psubs.org> wrote:
>
>Looks great Joe.
>
>
>On 11/1/2013 2:13 PM, Joe Perkel wrote:
>
>Psubbers,
>>
>>I have finalized the design of the Kort Nozzle assembly for a Minn Kota 101 as per the dimensions provided me by another builder. There are a few detail pictures on my project page. http://www.psubs.org/projects/1371101163/msvalvinjr./
>>
>>Some assumptions, this is drawn for 11 3/8' dia square tip prop, 3 7/8" body, again with dimensions provided. It requires a concentric attach ring as you see here in SS in the style of a propeller shaft anode. The beauty of that is that it allows fore and aft adjustment as required.
>>
>>I will provide the CAD files and 2d drawings with B.O.M, required to Jon for download over the next week or so for whatever process a builder chooses. The nozzle can be scaled to accommodate other prop and body dimensions as required.
>>
>>Doing these little projects will help me tremendously when my time comes to build.
>>
>>Joe
>>
>>
>> 
>>
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