Thanks for replying, Jeff and Sam. I had gotten some similar answers yesterday at forums.iboats.com. I thought re-jetting would be as simple as it was on motorcycles, mopeds and go-karts, which I've done a lot. But I have found that different size jets are not as readily available for outboards.
My plugs are a little darker than I would like, but for the sake of longevity I'm going to leave the jets alone for now.
By the way all, regarding the dimples on a golf ball. The reason golf balls have dimples is to produce a boundary layer so that it moves through the air with less drag. As the ball spins, the dimpled surface causes the air molecules to attach to it. This produces a layer of attached air rotating with the ball. This creates the effect of a ball of AIR moving through the air mass. There is less resistance between the two air masses so the ball flies relatively true. If the ball were smooth it would become more 'sticky', similar to the back of the spoon under the water from the faucet phenomenom.
Water and air are BOTH fluid mediums they react to movement in the same way relative to their density diferences. The reason I know these things, is because I have been hang gliding since 1978. In hang gliding reduction of drag if paramount. We have measurement figures for such things as coated or uncoated wires of varying diameters. Enough for now.
Ron, I want to buy another prop from you. Two inches less pitch. I'm making a video of my boat for you. I'll send it in a week or so, with all the numbers you will need to make me another nice prop. This 12 5/8 x 30 has 10% slippage. Not too bad for right out of the box, with no reworking. My wife thinks I'm strange, because I sometimes just stare at it for minutes at a time. A beautiful propeller indeed! Thank you.
Ken Boyd
Bookmarks