Aside from weedless options is there any noticeable differences in performance using different types of propellers on a 55 pound 12V MK trolling motor? Speed? torque? etc?

I do not have any issues with my current setup, just want to know if I am missing out on something.

Thanks

reo

My fishing kayak is light (270 lbs loaded) and a candidate for a prop with greater pitch. The standard MK 2 blade prop has a 4 inch pitch with a large diameter to give optimum static thrust, great for moving a heavy load. However it doesn't handle well when in reverse, important to me, and I thought a 7-9 inch pitch might also offer more speed.

I have tried a modified Nissan 3 blade prop (P/N 3F0641010M) and a 3 blade prop from a 9 hp O/B (for an extreme example).

The Nissan is 7.4 D x 7.0 Pitch. It was almost identical to the bigger OEM prop in speed vs battery draw.  When in reverse it was 25% faster and  offered excellent handling.

The 9 hp 3 blade prop with a pitch of 9 inches would not go slow enough and due to the limited power available from the motor was no faster than the Nissan.

If you are moving a heavy load the OEM prop is hard to beat. If you have a canoe or kayak, there are better props available, but most require some machining to fit the MK shaft.

Kipawa offers a 3 blade prop that fits some MK motors. I called them but could not find anyone that could give me the dia or pitch of their prop. I did not try them but they might be an option for you.

Two blade props give you the most speed but are the worst for weeds and moss.

Three blade are an inbetween prop, not as much speed as a two but pull a little harder and better in the weeds, pads and moss.

Four blade are the best for the weeds etc, and but give you the least amount of speed