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christian.hess 10-18-2013 04:19 PM

Islander 36 electric inboard? diy
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...


sony2000 10-20-2013 09:30 PM

Re: Islander 36 electric inboard? diy
Try here at, "Discussion forum, Electric sea."

sony2000 10-21-2013 07:51 AM

Re: Islander 36 electric inboard? diy
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.

christian.hess 10-21-2013 11:51 AM

Re: Islander 36 electric inboard? diy
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


sony2000 10-21-2013 01:44 PM

Re: Islander 36 electric inboard? diy
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.

christian.hess 10-21-2013 03:23 PM

Re: Islander 36 electric inboard? diy
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 I would love to know more about certain types of motors "off the shelf " and how to regulate them

again thanks!

sony2000 10-21-2013 04:14 PM

Re: Islander 36 electric inboard? diy
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.

sony2000 10-21-2013 04:23 PM

Re: Islander 36 electric inboard? diy
Speak to the owner, Mike Gunning at .
His system should be in a 36er.

misfits 10-21-2013 05:29 PM

Re: Islander 36 electric inboard? diy
Just wanted to subscribe to the thread.
Electric motor idea is pretty interesting....

christian.hess 10-21-2013 08:03 PM

Re: Islander 36 electric inboard? diy
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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