[PSUBS-MAILIST] rpm

[via Personal_Submersibles]

Yeah, too simple. Maybe that's a good guess, but..... I will say that an ammeter in the boat is a good thing. You can keep an eye on things, and if it goes UP at some stage, you would suspect a thruster issue (a tangle, or a bearing failure or whatever). All it takes is an appropriate shunt and a gauge (in my pre-digital steampunk mind). Okay, thanks anyway. I was curious, that's all.
Vance



-----Original Message-----
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Sent: Fri, Aug 29, 2014 3:56 pm
Subject: Re: [PSUBS-MAILIST] rpm


Vance,
I did not do an amp draw test because I do not have the technology in house. I 
would guess with a 10% rpm drop, there may be a 10% amp increase. That would be 
to simple :-)

Hank
--------------------------------------------
On Fri, 8/29/14, via Personal_Submersibles <personal_submersibles at psubs.org> 
wrote:

 Subject: Re: [PSUBS-MAILIST] rpm
 To: personal_submersibles at psubs.org
 Received: Friday, August 29, 2014, 3:39 PM
 
 Hank,
 Did you check the amperage? I wonder if the
 resistance causes a higher draw, and if so, how
 much?
 
 Vance
 
 
 
 
 
 
 -----Original
 Message-----
 
 From: hank pronk via Personal_Submersibles
 <personal_submersibles at psubs.org>
 
 To: personal_submersibles
 <personal_submersibles at psubs.org>
 
 Sent: Fri, Aug 29, 2014 3:33 pm
 
 Subject: [PSUBS-MAILIST] rpm
 
 
 
 
 
 
 
 
 
 I am working on a hydraulic
 pump that will be external and pressure compensated 
 in oil.  I am using a trolling motor to drive the pump.  A
 while back there was 
 a question about rpm drop when a trolling motor is filled
 with oil.  I bench 
 tested that today, and the motor runs at 2,000rpm stock and
 1,800 rpm full of 
 WD40.
 Hank
 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
 
 
  
 
 
 
 
 
 
 -----Inline Attachment Follows-----
 
 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
 
_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140829/fbf74f1a/attachment.html>