[PSUBS-MAILIST] Diver propulsion vehicle project

[Jon Eide Pettersen]

Vance,
The motor and controller was 244$ including shipping, duct and shroud 
was around 200$ including shipping and import fee. Magnets, bearings and 
sensors were around 100$ in total I think. Batteries will be around 
125$, and I spent 80$ on delrin. The tube which is the main body was 
kindly donated from a business that liked my project, and the aluminium 
stock I was lucky have left over from a previous project. Keep in mind 
that Norway is quite expensive so some of the parts are propably cheaper 
elsewhere. Anyway, I think a total of 750$ sounds right.

The motor is probably intented for some kind of industrial use, as it is 
very heavy and thick-walled. Here is a thread from endless-sphere with 
some pics and testing of the 800w edition: 
http://endless-sphere.com/forums/viewtopic.php?f=30&t=45443&sid=c3f78cf1221ba9251d90820d229764e1

- Jon


Den 23.01.2014 20:10, skrev vbra676539 at aol.com:
> Jon,
> Might as well ask. What's your total investment going to be? This 
> looks like a pretty good experimental option for subs, at the very 
> least. I'm with you on the motors. It will be interesting to see just 
> how tough they are.
> Vance
>
>
> -----Original Message-----
> From: Jon Eide Pettersen <jon at pettersen-prod.com>
> To: Personal Submersibles General Discussion 
> <personal_submersibles at psubs.org>
> Sent: Thu, Jan 23, 2014 1:24 pm
> Subject: Re: [PSUBS-MAILIST] Diver propulsion vehicle project
>
> Thanks for the kind words!
>
> The nozzle/shroud has an inside diameter of around 303mm at the 
> narrowest. Both the nozzle and the prop are replacement parts for the 
> commercial DPVs made by dive-xtras. The shroud cost 70.50$, while the 
> propeller kit is 67$. I bought it directly from dive-x here: 
> http://www.dive-xtras.com/cart/pc/viewPrd.asp?idproduct=42&idcategory=7.
>
> A nice feature with the propeller is that it has variable pitch, and 
> that the blades can be replaced individually. However, the blades are 
> plastic and I'm not sure how well they would survive an impact or 
> entanglement. The scooters from dive-x have a clutch to save the prop 
> in case this happens. Here is a drawing of the propeller assembly used 
> by dive-x: 
> http://www.dive-xtras.com/pages/support/diagrams/linedrawings/propellerassembly.pdf
>
> I bought the motor from www.goldenmotor.com. I'm not impressed by the 
> build quality, but it was very cheap and hopefully it will work. They 
> also have 650w and 800w editions of the same motor, perhaps this would 
> be suitable for use in a submersible? 
> http://www.goldenmotor.com/BLDC%20Motors%20for%20Light%20Weight%20Trikes.jpg
>
>
> - Jon
>
>
> Den 23.01.2014 16:16, skrev vbra676539 at aol.com:
>> And barring that, how about a 36 volt 3/4 hp PM motor, housing and 
>> drive? It would be sweet to cook something DIY up that could be built 
>> by a competent home machinist.
>> Vance
>>
>>
>> -----Original Message-----
>> From: Alec Smyth <alecsmyth at gmail.com>
>> To: Personal Submersibles General Discussion 
>> <personal_submersibles at psubs.org>
>> Sent: Thu, Jan 23, 2014 9:10 am
>> Subject: Re: [PSUBS-MAILIST] Diver propulsion vehicle project
>>
>> Hi Jon,
>>
>> Welcome! That is a nicely documented project, and very timely since 
>> we recently had threads about kort nozzles and magnetic couplers. 
>> Quick question... could you tell me what diameter that nozzle (aka 
>> shroud) is and how much it and the prop cost? I'm curious about 
>> adapting those to trolling motors.
>>
>>
>> Best,
>>
>> Alec
>>
>>
>> On Thu, Jan 23, 2014 at 8:47 AM, Jon Eide Pettersen 
>> <jon at pettersen-prod.com <mailto:jon at pettersen-prod.com>> wrote:
>>
>>     Hi!
>>
>>     I'm currently designing and building a diver propulsion vehicle
>>     with a magnetically coupled drive. I will use a 48v 500w BLDC
>>     motor intended for electric trikes, powered by 4 SLA batteries
>>     coupled in series.
>>
>>     I'm posting my progress at my personal website,
>>     http://pettersen-prod.com/project/dpv/index.html.
>>
>>     Anyway, hope you find this interesting! I hope to build a
>>     submersible in the future, but this will suffice until I have the
>>     funding and knowledge needed :)
>>
>>
>>     Regards,
>>     Jon Eide Pettersen
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