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#1 2014-01-03 04:19:30

PeterC
Member

Electric Motor in Mk2

   I just installed an electric motor in my Mk2 ( the old Atomic 4 was long dead and siezed up). I used a 5KW motor kit from Thunderstruck and US27DC FLA batteries.Its only been a few days, but so far we just love it, lots of power, just turn the key and push the throttle to be away, such a change from using an outboard. The installation was fairly easy, about 15 hours work done over the Christmas holiday. The cost for the Thruderstruck kit and batteries came to US$3400.00. Not bad compared to the alternatives.
Peter
Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2


Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2

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#2 2014-01-03 06:04:16

oasis
Member

Re: Electric Motor in Mk2

Hi.  Out of curiosity, may I ask what the speed and range is on battery?

Thanks.  Barry  Oasis, 1987 Mk V

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#3 2014-01-05 01:46:57

sony2000
Member

Re: Electric Motor in Mk2

Peter, I hope I will be able to say the same. A shipwright and I are building a system for my Paceship 29, (C&C 29), this winter! I'm using a 7.2 KW motor. Have you joined Electric Seas Forum, in your area of the world?

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#4 2014-01-06 12:40:12

PeterC
Member

Re: Electric Motor in Mk2

Barry,
  I'm depending on a performance spreadshhet I found on Thunderstruck's website. Speed in a huge factor. The numbers I am working on are;
    At 2 knots to 80% discharge  = 32 miles.
    At 3 knots ................  = 10 miles
    At 5 knots ................  = 3 miles.

  When sailing the spinning prop is supposed to give some re-charge. As I sail out on Santa Cruz there is always wind, except occasional winter days when there is a cold high pressure sitting on us.

  Peter
Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2


Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2

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#5 2014-01-06 12:47:15

PeterC
Member

Re: Electric Motor in Mk2

No, havn't heard on Electric Seas, but I will check it out. I have joined the online forum "electricboats" on Yahoo, but I find it to be dominated by techies discussing topics such as how to build your own charger etc. A little beyond my level ........

Peter
Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2


Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2

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#6 2014-01-06 22:32:36

sony2000
Member

Re: Electric Motor in Mk2

I'm incorporating a folding prop into the system, because my Club is big into racing.
Your endurance can be increased by 50% by a Honda type generator, and wind recharging system, is seeing major price reductions.

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#7 2014-01-06 23:46:42

oasis
Member

Re: Electric Motor in Mk2

Thanks.  Both the 2 knot and the 5 knot figures surprized me.  I knew there would be a big diference, but never thought it would be ten-fold.  Good luck with your system, and fair winds to you.

Barry  Oasis, 1987 Mk V

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#8 2014-01-07 01:01:23

clanning
Member

Re: Electric Motor in Mk2

Peter, how much battery capacity do you have?  I see the "FLA" refers to flooded lead acid (deep cycle) type -- the site shows AGM and Li type... Assume you have 4 batteries, of 205 amp-hours each -- is that right?

Thanks
Chuck Lanning
NSC, Ottawa


Chuck Lanning
C&C 27 Mk V, Chivas & Champagne
NSC, Ottawa

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#9 2014-01-07 08:51:03

PeterC
Member

Re: Electric Motor in Mk2

I have 4 X US27DC ( 12V 100ah lead acid).
Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2


Peter Connolly
Santa Cruz, Ca.
C&C 27 Mk 2

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#10 2014-01-07 10:45:42

sony2000
Member

Re: Electric Motor in Mk2

Yes it won't be "What's your RPM". It'll be "How many amps/hrs are you drawing"?

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#11 2014-02-07 05:17:13

whippet
Member

Re: Electric Motor in Mk2

Here are stats i'm getting from Electric Yacht.   5 kw motor on C&C27

         Flooded    AGM            LiFePo4
         200 ah            200 ah            200 ah
Kts    Hrs    Nm    Hrs    Nm    Hrs    Nm
3.0    16.6    50    16.5    49    16.5    49
3.8    7.0    26    7.6    29    8.0    30
4.8    3.0    14    3.5    17    3.8    18
5.4    1.8    10    2.2    12    2.5    14

Steve
1981 MkIII, Hull 886
Etobicoke YC, Toronto ON


Steve
1981 MkIII, Hull 886
Etobicoke YC, Toronto ON

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#12 2014-02-07 07:39:11

Katara
Member

Re: Electric Motor in Mk2

James @ http://www.docksidechandlery.com/ in Bronte is the local dealer for Electric Yacht
i was considering going electric but i'm kinda cheap and went with a rebuilt atomic . James was very helpfull explaining the system to me . If money was no object i'd go with the Elco system though http://www.elcomotoryachts.com/quote-request.shtml?camefrom=2
Gerard Warner
Katara, '79 Mk III
Bronte, ON


Gerard Warner
Katara, '79 Mk III
D.Y.C.  Ontario

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#13 2015-05-27 02:01:12

whippet
Member

Re: Electric Motor in Mk2

Hi Gerard

possible we can have a chat about this?   I'm at sstill at diio.net if you dont mind dropping me a line.

thanks
Steve

Last edited by (2015-05-27 08:43:25)


Steve
1981 MkIII, Hull 886
Etobicoke YC, Toronto ON

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