cougarman

Check300's old boat (30' Checkmate) with Twin Turbo & north of 1,500 HP.
Ran a Left Hand Rotation #6 drive. (single)

Purposely set up this way to counter Torque Roll

Brad Christy

Cougerman,

How would reversing direction counter torque roll in a single? Wouldn't it just reverse the torque roll? Genuinely curious.....

Thanks. Brad.
(937)545-8991

cougarman

My understanding when shared .... was the engine was rolling opposite direction of the LH Rotation of the propeller for a neutral point.
(Or Counter it at Best)

Brad Christy

Cougarman,

I don't mean to be argumentative, and if anybody wants to correct me, please do, but....

I don't think the rotation of the engine imparts any torque upon the boat except through the prop against the water... I guess I could see, MAYBE, SOME counter-torque during acceleration, but not while running.

I'm genuinely curious if anybody has any data to support this theory.

Thanks. Brad.
(937)545-8991

cougarman

(I don't have a dog in this race, its just what was shared with me)

I will say Check300's boat ran extremely well for Silly Power Single Engine Boat

Brad Christy

Cougarman,

Oh, I'm not doubting that. I know Kunkel's 300 CM ran 110-120 with a monster blower motor of some sort. I'm just curious about the counter-torque effect of running the prop LH. The physics don't seem to hold up.

Thanks. Brad.
(937)545-8991

cougarman

cougarman

Prop was a Dennis Cavanaugh Special, Bret @ BBlades knows the particulars


BBLADES - A Tribute To Legendary Prop Designer Dennis Cavanaugh

Brad Christy

Cougarman,

What a sweet set-up. That is awesome.

Thanks. Brad.
(937)545-8991

cougarman

No Torque Roll :-)
Brains / Tom Earhart

Also the very First #6 Extension Box (Also Tom Earhart) Transmission is in the box.
Napkin Sketch for BAM Marine, which Contracted Stelling's to build it for Tom & Bill.

Now you know the rest of the story... on how Stelling's Extension back came to be...