Originally Posted by fastcats (Post 3581024)

Great thread. Never saw it until this year and have been trying to read the whole thing but never quite get there. I have read posts 1 - 100 about 10 times though while trying to get through it.

The prop rotation information was particularly enlightening. I never considered the torque factor and feel lucky I have never had an incident due to my rotation (in). I plan on reversing my rotation this off season.

There is another variable I would like to get T2X's take on regarding prop rotation. Assume a 36 Skater with #6's.

I would think that the Port side prop blades when turning out would be entering the water above the horizontal centerline due to the fact that the hull angle would deflect the water such that it is higher on the left side of the prop and lower on the right side of the prop. It seems this would be true at least at slow and medium speeds when there is still a reasonable amount of the hull - at the transom - in the water. Over 120, I'm guessing it doesn't make much difference as there isn't much hull in the water even at the transom at high speed.

If the prop enters the water above the centerline when turning out, you would think this would result in additional transom lift. Conversely, when turning in, the prop would (theoretically) enter the water below the centerline, resulting in less transom lift. Perhaps this would require less energy and result in a few extra mph, as I have experienced when I changed from an "outie to an inee".

I have no idea if this is accurate. This is a question, not a statement of fact. I would like to get T2X's take on this as he seems most qualified to confirm or debunk the idea.

Originally Posted by HTOWER (Post 3580488)

Here are a few of those that I have in my garage

Originally Posted by BROWNIE (Post 3585139)

The biggest 'downside' of inboard rotation on a cat is the fact that you are putting the tiebar in compression. Look at one of the big fast cats tiebars. Spinning outboard, you can use a string.

Originally Posted by Jolley (Post 3585360)

Love this Thread....... Since the beggining.. Happy New year Rich and Darren :):):)

Originally Posted by T2x (Post 3578575)

Once again Merry Christmas to all my OSO friends from Darren and me.


This thread is now 10 years old and counting.........


T2x

Originally Posted by pstorti (Post 3585707)

T2x is spinning in always bad? I have a center console with twin diesels with bravo x drives. I don't gain any speed spinning in but I do get a 10% increase in fuel economy. The boat tops out at 55 but my cruising speeds are 30-45 mph usually 38.

I do think my boat needs more bow lift I installed 1.5" spacers and that helped, I'm running bravo 4 blades now but also have Maximus 5 blades that give me more lift but they seem hard on the drives. Curious as to your opinion.