" as it should be"

What does wankle say about this ?

From this article: https://www.passagemaker.com/t...of-propellers-part-1


"Most single-screw vessels utilize right-hand propellers."

From this inboard propeller supplier: https://www.wakemakers.com/nau...oard-boat-propellers

Correct Craft Propeller Rotation Explanation:
Correct Craft boats are well known for their right hand propellers. It is speculated that the right hand rotation was used to counterbalance the driver's weight with torque on early model direct drive ski boats. With the advent of wakeboard ballast systems arriving in the early Air Nautiques the offset became obsolete. Correct Craft continued to offer some models with the right hand rotation transmission until all boats were finally converted to left hand rotating transmissions in 2007.

quote:

Originally posted by pbslinger:

quote:

Originally posted by c1steve:
Almost all marine engines turn same as automotive, including those built before 1970. The only reverse rotations I found were in twin engine installations.

To make a reverse engine from standard, turn the pistons around as there is a slight offset in the pin location. Use a different cam, and probably a different firing order.

I worked on boat engines for 20 years.

You must not have been around single engine inboards. My 1984 Correct Craft Ski Nautique turns opposite to automotive, as do all Correct Craft boats I have observed until 1989. My father's Chris Craft Cavalier solved the reverse rotation problem by turning its 283 Chevrolet motor flywheel forward.

Other engine changes that may be on reverse rotation motors are: crankshaft oiling passages, water circulating pumps, crankshaft seals. Raw water pumps often can just be turned upside down or inlet/outlet reversed, cam gears are usually ground to allow same rotation of distributor and oil pump. Velvet Drive transmission just require oil pump turned to a different position on its mount.

I did not work on ski boats. Smallest was usually 28 Bertram. Average boat size was 40'.

Interesting...

I've got nothing substantive to add so I'll just post a pic.

"Bend knees, look at the trees. That'll be $50 please"

Isn't it fun teaching kids how to ski?


My brother and I spend more time with the kids than we do skiing ourselves these days...

I'm a pretty good water ski instructor, but I have had some spectacular failures. My daughter was in a short exchange program in high school and she lived with a family in Monterrey, Mexico for a week. Then all of the Mexican kids came to Missouri for a week, about 10-15 kids.

The Mexican kids were well to do, and weren't at all interested in cultural exchange, they mainly viewed it as a shopping opportunity. My daughter invited them to our house and suggested they could learn to water ski.

The air and water were in the 50's, so I made no moves to take anyone water skiing. After a while the group complains about promise to water ski not being realized. So the lessons began in cold water and air. The cold didn't help any but I didn't succeed in teaching one kid to ski. Lack of water familiarity was part of it, as was the cold, lack of effort wasn't. All that tried attempted until they were shivering and spent. Damn the cold, they gave their all.

I couldn't teach my wife's mom, sister, sister and law, and maybe only one of her friends. Other than those failures, my record of success is pretty good.

Cold water is no joke. Last year I went out on memorial day with only a spring suit with water temps around 60. After kneeboarding for ten minutes, I was shaking like I was dancing. I couldn’t unzip the suit without assistance, so I sat there with the heater tube down the top until I was back in control.

Teaching a noob at 57 degrees? I don’t see that as possible. Back when I was young and full of piss and vinegar, we used to winter ski a little, bit I always started from the dock. No deep water starts in that water.

My back has been too messed up to wakeboard yet, but we've been surfing since mid march without a wetsuit or heater shirt. I used to go at least every month, but I've lost interest in doing the drysuit thing.

As far as the engine rotation goes, I don't care as long as the boat goes the direction I want it too. Prop rotation does affect surf waves though.