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Discussion Starter · #1 ·
Hi guys,

I read a while ago that there was a member with an islander 36 that used a forklift motor and controller..and converted to electuc propulsion quite succesfully..

if that member or anybody else with an islander 36 or similar boat, displacement and specs has detailed info on install I would appreciate it.

I removed my dead palmer p60 engine...I have shaft and coupler still...

I am currently readiing through the yahoo electric boat group as well as other forums...

Im looking for specifics on performance pertaining to the islander 36 as its a bit bigger than most diy kits offer like the thunderstruck kit, ev conversion kits on ebay etc...

I will only be using for docking and anchoring...

thanks
 

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There are some new ETEK 7.2 klw motors by Briggs and Stratton still for sale on the net for $500. Get a QD and two sheaves from Martin Industries, controller, throttle and you are good to go.
 

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Discussion Starter · #4 ·
sony forgive me what is a QD? the sheaves and or pulleys and chain I can get down here...I wish I knew more about other useful type motors from other equipment down here, most all motors sold are 3 phase 120volt... for pumps and stuff...I have tried to find info on how to regulate throttle on those or similar type motors and nobody seems to know ever down here...

Ill check out those links, thanks so much again

christian
 

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Sorry, its QD bushing that goes on to the drive shaft. and bolts to the big pulley.
Check out EVDrives - Golf Cart Parts & EV Conversion Parts for ideas and the Cruisers Forum thread, Electric Propulsion.
Some people us AC motors but then you need an inverter. So I want to keep it simple.
I think the 7.2 kilowatt motor is 10 hp. Knowing the Palmer power curve, at 10 hp, that will give you the Knots your boat will do, as well as that rpm to be sought for, from the
electric motor down gearing.
In other words you may be trying to gear down to 3 to1 ending up with 1200 rpm on the prop.
 

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Discussion Starter · #6 ·
like a thrust bearing plate? yup I would need that...that ev place is exactly where I wanted to buy my parts...its just that I have never heard of a real world report on usage of one of their systems on a boat similar to mine...

the palmer p60 was known for being weak but smooth running and you are right around 10hp at the prop, similar almost to the atomic 4 in that regard.

I would not need anything more than what came on the boat powerwise...

again you are right on the money about the gear down...most guys are using 2.5 or so to step down the rpms...

Im very familiar with rc electric stuff...so I would love to know more about certain types of motors "off the shelf " and how to regulate them

again thanks!
 

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I have to install an Alltrax AXE4834 controller.
I won't be using the 1'' thrust bearing I have. The shipwright will put the motor on a large plate with slightly adjustable bolt holes for the motor.
In southern CA. there is a company that sells a bolt on package. Electricyachtsystems or similar.
Yes 36 feet is heavy, but 4 large deep cycle batteries should get you 4 hours at 2/3 hull speed.
Yes, you have to build your own or buy a system from one of the two suppliers.
You need a throttle and solenoid as well.
 

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Just wanted to subscribe to the thread.
Electric motor idea is pretty interesting....
 

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Discussion Starter · #10 ·
has anyone tried either:

electric motorport conversion kits or the thunderstruck kit the 10kw kit on an islander?

or any 12k displacement sloop? thanks
 

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Not to be a downer.. but I think this idea will come to a screeching stop when the costs start to tally up in comparison to a diesel http://www.mastervolt.com/marine/
 

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Discussion Starter · #12 ·
that is a top of the line australian I beleive direct drive hybrid system...that has about as much in common with a forklift motor or similar system as a swan to a macregor...

my issue has been so far determining what off the shelf components can I use to install in my boat. a golf cart system would be nice and dandy for me.

used even better!:)
 

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Christian,

Electric drives are very doable, but a 10kw motor isn't likely to be big enough. A 35' boat is going to need a lot more HP than this in anything other than dead calm days, when going sailing seems pretty pointless. Figure you will need a 25hp minimum, and ideally 40.
 

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Discussion Starter · #14 ·
the palmer p60 a great engine btw with one big drawback(exhaust manifold) is 22hp at the crank...10 or barely more at the prop, 2 blade...

stock...

I wish not to make this a motorsailor...I was trying to ask specific questions, hopefully from that member who did so on his islander 36...he did so using forklift motors or similar...

I have no need or want a 40hp diesel...I found my 2gm yanmar to be plenty enough power and TROUBLE on my old h28 that only wieghed a ton less or so than my current boat...

The issue I have is that the forums seem to have a lot of unfinished threads...leaving more questions than answers sometimes...

anybody done an install in a remote location...using a weird combo of motor and controller etc..?

thanks
 

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there are some commercial solutions, like
Products | GreenStar Marine

Their largest engine has been used on boats up to 40 ft.

Major drawback of electrical engines is the difficulty and limitation of energy storage. This leads to a limited range, and to a somewhat lower power compared to diesels. In itself this is not any show stopper as long as one is aware of it - you state you only wnat to use the engine when mooring etc - should work fine then.

/J
 

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the motor is only one part of a complex system of very large cables. (talking 400 amps and more) power source, batteries alone would sink the boat, unless you could source the new type, how to recharge (generator) , a controller. and more.

I realize this is an outboard but Myth busters Jamie is spot on what your talking about.

 

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more;
 

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And the best for last! LOL in a sailboat! note the size of those cables! LOL
 

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Discussion Starter · #19 ·
thanks for that last vid denise

christian
 

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Discussion Starter · #20 ·
I meant second to last

I have seen those vids before...except for the forklift one...

I guess Im not asking wether its feasible...Im a fan and have done a lot of research...I guess I would lke to know specifics...

any islander 36 owners with electric propulsion...?
 
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