We came to the conclusion that a propeller with a lower pitch might help my boat perform better with two adults aboard. The lower pitch should allow higher rpms and more thrust, hopefully getting the boat to plane with a heavier load.
Last spring, during maintenance on the motor, I more-or-less deduced that the "F7" marking on the prop probably indicated the 7" pitch original prop that comes as standard equipment on Tohatsu-Nissan 8hp motors.
So, not long ago, I ordered a 3-blade, 6" pitch propeller from Tohatsu. Today, after a trip to the lake, I put it on the motor. It fit like a charm. Next weekend, weather permitting, I should be able to test it at G11.
|Original prop, with its glossy black finish|
|"F7" marking on the original prop|
|New-in-the-box Tohatsu 6" prop|
|The new prop has a matte finish, and flattened tips on the blades|
|Unlike the original prop, this one is clearly marked with diameter and pitch|
|New prop attached to the motor. The matte finish contrasts with the glossy finish of the motor.|