[PSUBS-MAILIST] Elco Motors

[Hugh Fulton via Personal_Submersibles]

Ken,  I have had a lot of expense with LiFePO4's.  Battery management system
BMS is critical and they do not like sitting unused.  OK on a daily use
vehicle but as they are made in China the individual cell quality is dubious
and they need to be matched.  It has cost me a lot and I am not in the
water.  Chs  Hugh

 

 

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Ken Martindale via Personal_Submersibles
Sent: Wednesday, 23 April 2014 1:51 a.m.
To: 'Personal Submersibles General Discussion'
Subject: Re: [PSUBS-MAILIST] Elco Motors

 

Be nice to use the LiFePo4 batteries for the Sub batteries.

 

Ken Martindale

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of via Personal_Submersibles
Sent: Tuesday, April 22, 2014 8:44 AM
To: personal_submersibles at psubs.org
Subject: Re: [PSUBS-MAILIST] Elco Motors

 

Joe, 

 

A good idea. Paul M. reckons the dsl/elec hybrid makes for the best psub for
the obvious reasons, and so did Captain K. Autonomy is good. If it's 7-8K
for the entire system, I would suggest that it ain't bad, considering. Then
maybe add a variation on Hank's shaftless coupling, perhaps?

 

Vance

-----Original Message-----
From: Joe Perkel via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles <personal_submersibles at psubs.org>
Sent: Tue, Apr 22, 2014 7:46 am
Subject: [PSUBS-MAILIST] Elco Motors


Very interesting and informative data on Elco's marine website pertaining to
sizing, rates of discharge, range, and hybrid matching
http://www.elcomotoryachts.com/ep-600.shtml

I don't think its possible to scratch build the reliability of these
particular types of products in the electric boat industry, these are fully
engineered systems. At 7-8k, its an expensive motor and would have to be
inside with a rotating shaft seal arrangement, but coming from an
experimental aircraft perspective the price points on these motors is a
comparative bargain. I'm looking at these from a long distance surface
transit standpoint for the Seehund.

Joe <http://overview.mail.yahoo.com?.src=iOS> 

Sent from Yahoo Mail for iPad

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