[PSUBS-MAILIST] temporary propulsion

[Alan via Personal_Submersibles]

Brian,
after more reading, I see it does a maximum of 10,000 rpm.
When I was researching thrusters 3000rpm seemed to be the
maximum propeller rpm that was used. It probably needs to go 
through a gearbox. 
Alan

Sent from my iPad

> On 22/10/2016, at 2:47 pm, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
>                 Here's the motor below.  the one I was looking at was 35 HP this one says 65 !   but it depends on how you ask for certain parameters, they can design them to run with 48 volts or instance.  What I was looking for was a continuous working duty of 50% of it's full power.
>  
> http://www.evwest.com/catalog/product_info.php?cPath=8&products_id=371
>  
>  
> Here is the power graph for the motor:
>  
> http://www.hpevs.com/hpevs-ac-electric-motors-oil-cooled-ac-34-power-graphs.htm
>  
>  
> Brian
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] temporary propulsion
> Date: Sat, 22 Oct 2016 01:35:43 +0000 (UTC)
> 
> Ouch $4000-, would you have to replace the shaft with
> a longer propeller shaft?
> What combined hp. are you looking for. How many motors?
> Have you sorted the motor controller for the motors?
> Alan
>  
> 
> 
> From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
> Sent: Saturday, October 22, 2016 12:18 PM
> Subject: Re: [PSUBS-MAILIST] temporary propulsion
> 
> Alan,
>                  I still plan to use those motors, but they are expensive. $4000 each   Been spending money like a drunken sailor, so I was trying to brainstorm a cheppo solution ;-)   I still kind of like the fact that a mass produced motor like the ones showed could be a cheap alterative .  Those little Honda generators are quite amazing , very compact, quite, and they sip the gasoline.  I noticed a lot of sailboat people would use them for house power instead of firing up they're onboard engines, they would set them out on the bow. 
>  
>  
> Brian  
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] temporary propulsion
> Date: Sat, 22 Oct 2016 07:49:04 +1300
> 
> Hi Brian,
> what happened to the high powered motors you were looking at a while back?
> These motors are huge & only put out 1/3 rd horsepower. Minn kotta is 2hp. There is a 
> lot of work making a housing for them. The shaft would have to be extended to fit another bearing, seal & the propeller, let alone all the work for a housing that is bolted together &
> sealed with a wiring entry welded on.
> If you are just wanting to do buoyancy / stability tests before you invest in thrusters,
> why not have a small inflatable tender with outboard to drag it round.
> Alternatively look on Cliffs project page on his Minn kotta modification, as he has done
> some good work on them that may be helpful.
> Cheers Alan
> 
> Sent from my iPad
> 
> On 21/10/2016, at 4:55 pm, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi All,
>                      Been thinking about how I'm going to get around the harbor with my sub.  I'm thinking that for the time being I'm just going to run ( on the surface) a 2000 watt Honda generator and then for the motors , use these 1/3 HP dryer motors in a oil flooded housing, probably made out of aluminum tubing.  They obviously run with 120 V  AC power. 
>  
>   Since on my sub I will have dual motors on each side, port and starboard, I was thinking to also have additional motors facing foreword to stop my foreword progress ( a brake)   .  
>  
>  These dryer motors can be got really cheap , new they're about $75.00  I'm pretty sure they would be ok flooded with oil.   So I would have a total of 4 motors , two on each side one going frontwards and one opposing .  It would be a totally on or off drive of course , with no speed control. 
>  
>  
> Here's a video of the motors I'm talking about. 
>  
>  
>    https://www.youtube.com/watch?v=uIrCUh1S8x8
>  
>  
> Brian
>  
>  
>  
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