Hi my other half has just got into kayak fishing, He has bought himself a galaxy cruz sit on kayak. He has also bought himself a poer trolling motor. We think we have found a place that we can buy the battery for it from but he's not sure where on the kayak to put the battery. Any help or advice would be most appreciated
I am not familiar with this brand of trolling motor but I assume you are using the special Cruz electric motor mount. The battery would be a leisure battery of around 110amp which will give a reasonable run time although if you could buy a lithium ion cell, you would have a huge reduction in weight compared to the leisure battery.
The weight aspect is an important point as the Cruz has a carry capacity of approx 130kgs which is based on calm water conditions and a total load of 130kgs including you, your fishing gear, motor and battery so you can see the weight of the battery is important.
Any kayak but more so smaller kayaks need to be loaded to establish good balance and handling so placement of the battery is vital. The only place to site a large lead acid battery is in the rear tankwell in a watertight box. The major advantage of a lithium cell is that they are small and lightweight so can be placed in a number of positions but very expensive.
I had quite a lot of experience with electric outboard motors on kayaks and to be very honest I am way to heavy to run a set up like yours with a lead acid battery. I tested electric outboards on a very large kayak called a BIG GAME which has a huge carry capacity but even then I was not too happy with a leisure battery stuck on the back. Instead of this type of outboard, I lashed out and bought a Torqueedo electric outboard which is designed for kayaks and weighing in at 15lbs all in including motor, battery and controller unit but as with all things in life, there is a cost to a high tech motor such as a Torqueedo.
I am quite concerned with what your husband wants to do and strongly recommend that you speak to Galaxy for their suggestion in this matter but whatever you do, you must take into account the total weight concerns. Please also bear in mind that if you are intending going out on the sea, conditions can and do change very quickly so will this outfit still be safe in rough water and remember if the kayak turns over with a lead acid battery clamped down in the rear tankwell, he WILL find it almost impossible to turn the kayak back over again or he loses the battery.
Perhaps not the answer you wanted but there is no straight forward answer.
Last Edit: Jul 16, 2019 22:03:54 GMT -1 by philpot
I have been a devoted paddler of Galaxy kayaks for six years and love my Sturgeon. However the Cruz single seater (Which I assume he has bought) was never intended for serious sea fishing, with a motor it may be an interesting new angle on suicide. Keep inland and in shallow water and make sure he has a sensible PFD, (make that two PFD's) and take 'philpots' advice.....best of luck