Motor Questions for a Kayak

EFOIL.builders Propulsion System (Motor, Gears)
#1

I am looking to build a drive for my kayak. A DIY bixpy type clone, if you are familiar with that. I am probably in the wrong place altogether. But this seams to be the highest concentration of aqua motorized DIY that I can find. :sunglasses:

I am currently running a hacked trolling motor with a DIY remote control on LiFePO4 batts salvaged from medical equipment. I have also almost finished a DIY batt. The motor is brushed and 12v. I would like to switch to brushless, higher voltage (24-36v I think) and maybe pick up a little more speed.

Can anyone give me direction, or point me to somewhere to sort through what motor and prop would work for displacement kayak propulsion?

#2

Depends on the speed u want to go. Cheaper part and well working (6s) would be 6384 (jetboardcologne build). U in to a bit more speed, i suggest something with a gearbox for added torque and lower consumption. Plenty of builds here :slight_smile: Idk how fast will it go until u test it :love_you_gesture:

#3

6384 is a motor starting point. The other half of the equation would be… the prop?

If there are plenty of builds here, still looking, but I have not found them yet. Pointing me to 1 or 3 would be awesome

#4

Bump for some more eyes

#5

I got a suggestion to post pictures of my kayak for better responses. This is a 13.5ft Vibe Sea Ghost. I am currently running a 12v brushed Watersnake trolling motor, that I have hacked with RC remote control ESC, and a DIY remote in an Outterbox case. I get 4.5 mph on flat water pulling 15amps with a 4s LifePO4 batt salvaged from medical equipment.

Bixpy makes a commercial motor that runs 36v and gets about 6.5 mph. I am looking for similar or a little better performance

20190613_152604
20190613_1526044032×3024 3.11 MB
20200114_102608
20200114_1026083024×4032 3.28 MB
20200313_172517
20200313_1725173024×4032 2.21 MB
20200313_172531
20200313_1725313024×4032 2.35 MB
performance

#6

Check out this guys youtube I am following him close and have my own project in the works

#7

I’m still in the design stages of my kayak build. I think I have narrowed it down to these two options.

https://www.amazon.com/gp/product/B082W7R2N7/ref=crt_ewc_title_dp_1?ie=UTF8&psc=1&smid=A1NVSC4BC9Q07E

or

the battery, BMS, ESC and prop… are other things I’m racking my brain on.

#8

The Good of the land guy has shown me that first motor is not what I want. I am finding zero info on motor an prop combinations, like I am used to finding for drones. So I am still clueless on where I am going. But I am going to keep looking. But be sure to post what you try out

#9

Why is that motor not what you want? I’ll post on my build as it comes along.

#10

Have you gotten anywhere with your build yet? I am looking for similar results as you.