electric motor on a kayak

Tasman/Marlborough region discussions, for local trips, meetings etc.
Post Reply
gary
Posts: 24
Joined: Sat Sep 17, 2011 7:57 am
Kayak Make: Ocean kayak
Kayak Model: Prowler 4.3 ultra
Location: Nelson

Sun Nov 16, 2014 7:14 am

hi all

Been thinkng about putting an electric motor on my kayak for about a year or so now. My friend Jeff has put one on his wavewalker
500 Kayakl so i decided to mount my motor on the back in place of the rudder. The Motor is a 44 lb thrust which draws 29 amps at full speed. It has five forward and 3 reverse speeds. And the size of the battery is a 120 ah, which should give around 4 hrs motoring at full speed.
The kayak is a Ocean 4.3, I had a bracket made at a local engineering shop cost was some fish, (still to be paid) The coat of motor was 319 bucks and the battery will cost from 250 to 600 bucks dependent on size you buy.On top of this is cables, plugs, screws, bolts,
total cost 700 to 1000 bucks.remember if you go down this road the bigger the motor the bigger the battery.This means more cost and more weight in your kayak.I have i cord that I pull on which pulls the motor out of the water when fishing, and when launch and land on shore
The speed is hard to say, I get to the 3rd marker at cable bay in around 20 mins.
Attachments
20141102_152657~3.jpg
20141102_152833~3.jpg
20141102_153208~2.jpg
20141102_152953~2.jpg

User avatar
Jeff the wave walker
Posts: 208
Joined: Mon May 06, 2013 10:56 pm
Kayak Make: Wavewalk
Kayak Model: W500
VHF Call Sign: zmw9750
Location: Nelson

Sun Nov 16, 2014 12:03 pm

gary wrote:hi all

Been thinkng about putting an electric motor on my kayak for about a year or so now. My friend Jeff has put one on his wavewalker
500 Kayakl so i decided to mount my motor on the back in place of the rudder. The Motor is a 44 lb thrust which draws 29 amps at full speed. It has five forward and 3 reverse speeds. And the size of the battery is a 120 ah, which should give around 4 hrs motoring at full speed.
The kayak is a Ocean 4.3, I had a bracket made at a local engineering shop cost was some fish, (still to be paid) The coat of motor was 319 bucks and the battery will cost from 250 to 600 bucks dependent on size you buy.On top of this is cables, plugs, screws, bolts,
total cost 700 to 1000 bucks.remember if you go down this road the bigger the motor the bigger the battery.This means more cost and more weight in your kayak.I have i cord that I pull on which pulls the motor out of the water when fishing, and when launch and land on shore
The speed is hard to say, I get to the 3rd marker at cable bay in around 20 mins.
looks good what is the total extra weight, mine added about 22kg. 75ah battery is 17kg. Trolling for kingis is looking a lot more viable.
When it comes to fishing I set a low standard and fail to achieve it, makes life easier.
ZMW9750

gary
Posts: 24
Joined: Sat Sep 17, 2011 7:57 am
Kayak Make: Ocean kayak
Kayak Model: Prowler 4.3 ultra
Location: Nelson

Sun Nov 16, 2014 12:10 pm

the extra weight is about 33 kg In all. Remember the top half of the outboard is not used only the inside parts.

User avatar
Hairy Little Dwarf
Moderator
Posts: 6883
Joined: Thu Oct 16, 2008 8:39 am
Kayak Make: Phoenix
Kayak Model: Hornet

Sun Nov 16, 2014 1:48 pm

Lot of thought gone into that.
You running the speed controls like the Torque or Stealth?
Image
.................... "Flying Mango"....................
Phoenix Hornet - Specialty Assault Craft

Dad! Dad! Look at his fish! It's way bigger than anything you've EVER caught! - Nosey 7-8yo boy on opening my icebox to father strapping down his $XXX Stabicraft 759(?) - Gold. Pure Gold.

gary
Posts: 24
Joined: Sat Sep 17, 2011 7:57 am
Kayak Make: Ocean kayak
Kayak Model: Prowler 4.3 ultra
Location: Nelson

Sun Nov 16, 2014 2:24 pm

no Speed controls i made myself from the top of the outboard motor. Once i've had it running for a few months and i'm happy with It, a friend of mine is a bit electronics genius and he is going to make me and wireless speed control for the motor. I don't want to take on this cost at the moment till I am 100% happy.

User avatar
RJ
Posts: 764
Joined: Fri Nov 01, 2013 5:11 am
Kayak Make: ocean kayak
Kayak Model: ultra 4.7
Location: Napier

Sun Nov 16, 2014 2:44 pm

Neat job gary :y: :y:

User avatar
Hairy Little Dwarf
Moderator
Posts: 6883
Joined: Thu Oct 16, 2008 8:39 am
Kayak Make: Phoenix
Kayak Model: Hornet

Sun Nov 16, 2014 2:51 pm

You have got a deadman switch though?
This thing will really motor without you in the saddle
Image
.................... "Flying Mango"....................
Phoenix Hornet - Specialty Assault Craft

Dad! Dad! Look at his fish! It's way bigger than anything you've EVER caught! - Nosey 7-8yo boy on opening my icebox to father strapping down his $XXX Stabicraft 759(?) - Gold. Pure Gold.

User avatar
Ruff as Gutts
Posts: 2369
Joined: Thu Jan 24, 2013 10:54 pm
Kayak Model: Swing
Location: Tauranga

Sun Nov 16, 2014 7:37 pm

Very nice work bud! But like he said^^ ^^ I've had a long swim after a jetski before |(

gary
Posts: 24
Joined: Sat Sep 17, 2011 7:57 am
Kayak Make: Ocean kayak
Kayak Model: Prowler 4.3 ultra
Location: Nelson

Sun Nov 16, 2014 7:39 pm

And yes there is a dead switch

User avatar
Jeff the wave walker
Posts: 208
Joined: Mon May 06, 2013 10:56 pm
Kayak Make: Wavewalk
Kayak Model: W500
VHF Call Sign: zmw9750
Location: Nelson

Mon Nov 17, 2014 1:54 pm

gary wrote:And yes there is a dead switch
Went out Delaware today and came back against the outgoing tide. Little outboard plus paddling = success. Didnt have to wait for the tide to change. Got a bit yuck for a while so bbq'd gurnard on the beach for lunch.
Attachments
IMG_20141117_094544.jpg
IMG_20141117_110810.jpg
When it comes to fishing I set a low standard and fail to achieve it, makes life easier.
ZMW9750

User avatar
rodders
Posts: 22
Joined: Sat Oct 03, 2015 7:02 pm
Kayak Make: Viking
Kayak Model: Reload
Location: Auckland

Tue Jun 06, 2017 1:52 pm

gary wrote:And yes there is a dead switch
Hey Gary
How is that battery working out?
My understanding of lead acid is you can only 20% (DOD)of capacity other wise warranty is void (AA SOLAR AGM) and that just ain't enough for me so I went Lithuim where I get 60% DOD

Also looking for a switch to replace the handle for controlling the speed. Any suggestions?

Sent from my SM-G930F using Tapatalk

Post Reply
  • Information
  • Who is online

    Users browsing this forum: No registered users and 5 guests