Alyssa Jean
New member
Okay, I have searched as much as I can and find no info on this engine.
Does anyone have anything good or bad to say about it?
Does anyone have anything good or bad to say about it?
Coastie Dory":1m5xwu2w said:Hi all,
The noise on the bigfoot gearcase is known as clutch rattle and happens when the boat is moving through the water at idle speed in gear. The small displacement power head is driving a large (75 to 125 hp) lower unit which is geared down compared to the larger engines. The standard prop for the big engines has a hard plastic hub in it and makes a rattle noise between the clutch and gear dogs. That big prop (up to 14 inches in diameter) is turning very slowly at idle. It is very noticable on some rigs and bearly audible on others. It has NO affect on durability. Mercury makes a special prop with a soft rubber hub for 40, 50, 60 4 stroke bigfoots that eliminates the noise.
I have rigged several C-Dorys with the bigfoot engine with very good results. With the hard hub the noise can be very noticable at idle in gear at a "coast". If you apply a small amount of throttle the dogs are forced together and the noise is gone. Bigfoot props cure the noise very well.
I hope this helps clear things up a bit.
Randy.