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Reply | Forward Message #927 of 6700 |
Re: [harryproa] Batteries

Ive looked at these before
I struggle with the cost of them when compared to some other types.
There is also the charging situation. You cannot trickle charge these. They require hi amp input and this is something that regenerative charging does not do. I sell automotive battery chargers and we do not make a charger capable of charging these. Charging would require a custom unit to be made up ( read expensive ) and I'm not sure if inverter technology has the ability to do that high an amperage yet. So you will be carrying around a transformer that will weigh as much as an outboard.
This is only my my opinion and I can only talk from experience. I would suggest if you were serious that it be researched for their good and bad points.
Rgs
Tony
----- Original Message -----
From: colcampey
Sent: Sunday, March 28, 2004 8:07 AM
Subject: [harryproa] Batteries

Hi JT and all,

How about these batteries?  

http://www.everspring.net/product-battery.htm 

Regards,

Col Campey





Mon Mar 29, 2004 1:23 am

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khsd16
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Forward 		Message #927 of 6700 |
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I recently tried to back my 5m Jarcat with an outboard. Half a knot if I was lucky compared with 10 knots forward. Getting off a beach with an outboard in... 		Robert
cateran1949
Offline Send Email 		Mar 19, 2004
12:09 am

I can relate to that. Depends on your prop pitch. Most outboards are designed to go (1) way thus have their tips cupped for maximum thrust transfer aft. Of...
jjtctaylor
Offline Send Email 		Mar 19, 2004
3:18 am

... just ... not ... electric ... Hi John, Have you considered a couple of Etek motors instead of the Solomon solution? The advantages as I see them are: -Less...
colcampey
Offline Send Email 		Mar 19, 2004
9:41 am

Hi ya Col......... I have known about ETEK for over a year. After doing a bunch of digging found out they have about half the torque at max output, as a...
jjtctaylor
Offline Send Email 		Mar 20, 2004
2:40 am

-Could the 200 odd kg of batteries and the drive be kept in a pod , keeping the weight more outboard and the centre of drive more central and keeping the...
Robert
cateran1949
Offline Send Email 		Mar 23, 2004
1:28 am

Robert, Of course you can always put batteries in an optimal location. But optimization has "some" considerations. Outboard is where we live so they take up...
jjtctaylor
Offline Send Email 		Mar 24, 2004
3:47 am

John, It is obvious that you have done your homework and have thought deeply and practically of the issues. Short of super cooled super conductors or heavy...
Robert
cateran1949
Offline Send Email 		Mar 25, 2004
1:49 am

Yes sir, The submarine pod would be extreme and agree the maintenance would be duties of a small child. Of course the pod would take added weight just for the...
jjtctaylor
Offline Send Email 		Mar 25, 2004
11:09 pm

, Plus MY workbench (fold down table) ! Boss gets the ... Married bliss? robert...
Robert
cateran1949
Offline Send Email 		Mar 26, 2004
3:22 am

... be ... changes ... Foils have been a mess for designers. They add drag at low speed, at ... like ... I was thinking of minimal foils for damping...
Robert
cateran1949
Offline Send Email 		Mar 26, 2004
4:34 am

Might work on a smaller harry. But major problem for a visionarry. See http://www.foils.org/sailfoil.htm for info regarding foils and their designs. I think...
jjtctaylor
Offline Send Email 		Mar 26, 2004
11:14 pm

Hi JT and all, How about these batteries? http://www.everspring.net/product-battery.htm Regards, Col Campey...
colcampey
Offline Send Email 		Mar 27, 2004
10:07 pm

Ive looked at these before I struggle with the cost of them when compared to some other types. There is also the charging situation. You cannot trickle charge...
Tony Richardson
khsd16
Offline Send Email 		Mar 29, 2004
1:21 am

I am happy to let them post when they can find a moment to scratch themselves. Maybe some generous souls could chip in for admin assistance. ... will ... ...
Robert
cateran1949
Offline Send Email 		Mar 29, 2004
10:57 pm

I agree that it would be good but It would be a nightmare to build and fit and the extra weight The only advantage I see is for motor sailing. Rgs Tony ... ...
Tony Richardson
khsd16
Offline Send Email 		Mar 19, 2004
4:26 am

Thanks Robert. No admin funds, paid subscriptions, or 'digs' of any kind (thanks all the same JT) will expedite posting. We don't want to bore over 300 people...
michele balharry
michele_balh...
Offline Send Email 		Mar 30, 2004
1:05 am

Actually I personally do care about the mundane things cause interesting tips or issues surface. The elevation of the lower strut support for the rudder has...
jjtctaylor
Offline Send Email 		Mar 31, 2004
2:05 am
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