Walter Graupner
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  • West Fork, AR
  • United States
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Walter Graupner's Discussions

Compelling reason to restore my antique diesel
4 Replies

 Ok, before I'm kicked out of the forum, look at this Utube.http://www.youtube.com/watch?v=21rJ30Y-sZg I don't have the same engine but my…Continue

Started this discussion. Last reply by Walter Graupner May 21, 2012.

electric motor selection
12 Replies

Greetings all,Maybe I didn't search the right places but got no information when I did.I've decided to go electric. My boat is a 1971 Nantucket Clipper, 7.5 ton yawl. She has a 3/4 full keel cutaway…Continue

Tags: planning, motors, simplicity, controller, dependability

Started this discussion. Last reply by Tom Hruby Apr 13, 2012.

 

Walter Graupner's Page

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Walter Graupner posted a discussion

Compelling reason to restore my antique diesel

 Ok, before I'm kicked out of the forum, look at this Utube.http://www.youtube.com/watch?v=21rJ30Y-sZg I don't have the same engine but my diesel is an old lifeboat type engine that has a similar characteristic. Another hobby I enjoy is playing music and this could be very handy. Any ideas on how I could get this out of an electric motor? WalterSee More
May 11, 2012
Walter Graupner posted a discussion

electric motor selection

Greetings all,Maybe I didn't search the right places but got no information when I did.I've decided to go electric. My boat is a 1971 Nantucket Clipper, 7.5 ton yawl. She has a 3/4 full keel cutaway aft.I would like to find the best motor to fit my ideal auxilary power source. As a sailor I want something that will go when it's needed. Dependability. My sails will always be the primary but I just ran aground on my friends boat and the removal process involved his powerful diesel in reverse and…See More
Apr 10, 2012
Walter Graupner posted a status
"Got loads of questions about electric power, regenerative braking, chargers of all kinds and sailing diesel free."
Apr 10, 2012
Walter Graupner is now a member of Electric Seas
Apr 5, 2012

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Rebuilding an old sailboat with intentions of using electrical power.

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At 12:33pm on April 9, 2012, Greg Martin said…

Hi Walter, so what kind of sailboat are you rebuilding? I restored/ renewed my 1967 Bristol 32 with an electric propulsion system and I can say it was the best thing I ever did. Please tell us about your project!

 

Anyway, I just wanted to let you know that we have forum topic under general discussions that we're using as an archive for previous messages to all members, concerning info about this site. Here's the topic:

http://www.electricseas.org/forum/topics/archive-of-messages-to-all

We'll periodically send a message with updates on what's going on. This site is always evolving, so please feel free to shape it into whatever you want.

Keep it charged!

-Greg

 
 
 

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Peter Thompson's discussion was featured

New Battery Bank for Thoosa 7000-HT

I am looking at replacing the battery bank for my 48 volt Thoosa 7000 system . . . currently I have 8-6volt deep cycle golf cart batteries rated at about 100 Ah . . . at a 25 Amp per hour usage . .  this only gives me about 3.5 knots per hour . . . so to discharge batteries to 50% I only have a range of about 8 miles.Obviously, I would like to extend this . . . I am looking at replacing the current batteries with 4 Northstar SMS AGM 220 or 4 Northstar SMS AGM 400  (220 Ah or 400 Ah…See More
Sunday
John Arndt is now a member of Electric Seas
Dec 14
Profile IconMike Redmond and Shanty Yacht Club joined Electric Seas
Dec 12
Eric H updated their profile
Dec 11
David Vaughan joined Sally M. Reuther's group
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Oceanvolt Electric Saildrive Group

Oceanvolt Ltd is focused on producing electric propulsion systems for catamarans and sailboats. Each and every part of the system has been specifically designed for electrical use. Compared to combustion engines, this system is silent, simple and reliable. “Less from nature, more for people.” Discover technology that respects both people and nature.See More
Dec 9
David Vaughan posted a discussion

Sail drive option for electric motor install

I am looking for affordable sail drive installation for my catamaran to connect to my electric motors. I am looking for these as an easier option to installing a traditional propeller shaft, struts, packing box, etc.  Anyone know of a good source to purchase to purchase two sail drives and use a verticle attachment for my electric motors? (AC-46's).DaveSee More
Dec 6
Profile IconDavid Vaughan and Stan Esposito joined Electric Seas
Dec 4
Ned Farinholt updated their profile
Nov 5
David Warr posted a status
"Has anyone managed to power up a 48v QT10 just using panels..I do not have access to shore power..?"
Nov 1
David Warr joined Greg Martin's group
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Electric Yacht User Group

User group for Electric Yacht
Nov 1
Peter Thompson posted a discussion

More questions on new battery bank for Thoosa 7000

So I'm am getting ready to head from here in Hawaii to the South Pacific on my Aries 32  . . . I have a Thoosa 7000 system currently powered by 8- 6 volt, 200 AmpHr Costco lead acid batteries . . . I want to replace these with AGM's (safer, no maintenance and I don't have to try and find distilled water in the South Pacific) . . .Being here in Hawaii . . . the cost for shipping batteries is very high . . .  I have found a good set of traditional style Amstron GC2, 6 volt AGM's . . . (see info…See More
Oct 14
Profile IconJason and scott cooper joined Electric Seas
Oct 12
Bob Greene joined Greg Martin's group
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Clean eMarine Group

Clean eMarine designs & manufactures the Thoosa & Triton inboard electric propulsion systems. See More
Oct 10
Pat Neal posted a discussion

Longest motor to date

Went on my first cruise out this last week end26 km with no wind and a strong tide current dead on the nose for most of the tripmy math might be a little off but it works for me26km / 6.5hr  = 4.07kts avg220 ah @48vdc = 10.5kw310ah bank @ 48vdc = 14880 watts310ah battery bank  x.80 =  248ah for 80% dod220ah/248ah = 88% of available power usedI tried to stay at about 35 amps for the whole trip just to see what would happen and log some time and data if it was on a flood I am thinking 30km or…See More
Oct 8
Capt. Mike posted a discussion

100 Watt Renogy bendable solar panels

I just bought  a Renogy 100 watt bendable panel to add  to my 12 volt house solar array. At four pounds it is four times lighter and smaller than the 75 watt Siemens panels I bought over a decade ago. Not sure if they will hold up as well and I'd be leery to walk on it. But, I'm impressed with it so far. Gave a nice bump up in energy collection and easily movable compared to the rigid panels.:…See More
Oct 8
Mark Frasca joined Sally M. Reuther's group
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Oceanvolt Electric Saildrive Group

Oceanvolt Ltd is focused on producing electric propulsion systems for catamarans and sailboats. Each and every part of the system has been specifically designed for electrical use. Compared to combustion engines, this system is silent, simple and reliable. “Less from nature, more for people.” Discover technology that respects both people and nature.See More
Oct 7
Bob Greene joined Greg Martin's group
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Electric Yacht User Group

User group for Electric Yacht
Oct 7
Bob Greene joined Greg Martin's group
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Propulsion Marine User Group

User group for Propulsion Marine.
Oct 6
Waterbird Cruises is now a member of Electric Seas
Oct 2
Craig Russell is now a member of Electric Seas
Sep 23

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