[PSUBS-MAILIST] Thruster Test Jig

[emile via Personal_Submersibles]

All,

 

I build a test rig from a 1000 Liter IBC container. Cost just 40,- USD . See picture. Amps and RPM are monitored with the PC.

Despite the capacity men can test just for a few seconds at full throttle ( abt. 37 Kgf) After that the thrust goes down due the turbulence.

A pool would be better but any testing at home saves trouble when you are at the lake ;-)

 

Br, Emile

 

Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] Namens Cliff Redus via Personal_Submersibles
Verzonden: dinsdag 15 mei 2018 15:29
Aan: Personal Submersibles General Discussion
Onderwerp: Re: [PSUBS-MAILIST] Thruster Test Jig

 

Alan, I sent you a compressed file to your private email address.  

 

Basics of the tester was a hinged boom that lowers the thruster into the pool.  The bollard thrust was measured with a load cell.  Thruster speed was measured with a mag pick up on a shaft and a frequency input module in PLC.  PLC was used to take measured analog signals and data logging.  Touchscreen HMI was used to control and display results.  System used three 100 Ah batteries connected in series to drive thruster.  Also measured the current and voltage on thurster.  Included a power point file of a psub presentation I did on the test a while back.  

 

I am interested in the results you get from your thruster.  Keep us in abreast of testing progress.

 

Regards

 

Cliff

 

On Tue, May 15, 2018 at 12:16 AM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Cliff,
you don't have the plans or pictures of your thruster testing
set up do you?
I have just bought an extension ladder to extend my thruster
testing jig out in to the pool further to eliminate the backwash off the side,
& am wanting to make the jig a bit more professionally than last time. 
Have a bit of an idea of how I'm building it but may gain some 
ideas from how you did it. 
BTW just ordered the aluminium version of your parker relieving regulator
as it was a few hundred dollars cheaper than what I could buy the 316. 
Will pull it apart & look at anodising it.
Cheers Alan


Sent from my iPad

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