Dulling my boats bottoms up help needed

[Ocean Racer]

My comments were just in fun. That is why I put smilies after them. I hope you did not take me the wrong way.

No i didnt take it badly just given you a heads up thats all. Its bad enough they want to get rid of fishing so I try not to give them reasons to help them with that.

[Xzessperated]

No i didnt take it badly just given you a heads up thats all. Its bad enough they want to get rid of fishing so I try not to give them reasons to help them with that.

I love my fishing too.

[Ocean Racer]

From what im reading it all depends on preference. But so far the pengeulum is swinging toward a ruff or scuffed hull. But it also sounds that just like some boats like certain setups they also like/dont like being scuffed. SweetZ28 I think what happened is the scuffing made a grove/groves or chanels that allowed water and air to pass through. This lessened the sucktion on the hull.

[Ocean Racer]

I love my fishing too.

Good to know im not the only one here

[scooterP]

This will always be a point of discussion. When I was around some of the folks that machines Nascar and Indy intakes, the concensus was that you would not leave an intake perfectly smooth, but leave it a little rough. The reasoning was that as air and fuel flowed and mixed that it would stick and fill in the roughness on the intake surfaces and allow a super smooth path for the air/fuel mixture to travel. Resulted in better flow and a little more hp. I've seen this proven on a flow bench. It was also theorized that the rough surface caused the fuel air mixture to mix better which resulted in better hp. I know we are talking about water flow on the boat hull and not intakes on cars, but it seems like the same principal.

[ozzie-crawl]

This will always be a point of discussion. When I was around some of the folks that machines Nascar and Indy intakes, the concensus was that you would not leave an intake perfectly smooth, but leave it a little rough. The reasoning was that as air and fuel flowed and mixed that it would stick and fill in the roughness on the intake surfaces and allow a super smooth path for the air/fuel mixture to travel. Resulted in better flow and a little more hp. I've seen this proven on a flow bench. It was also theorized that the rough surface caused the fuel air mixture to mix better which resulted in better hp. I know we are talking about water flow on the boat hull and not intakes on cars, but it seems like the same principal.

there has been discussions for years as well about porting, polish or leave rough for the same reasons you mentioned.

i sand the bottom of my hulls but one thing that intrigues me is when most of my boats are running at wot there is bugger all touching the water.

[Diesel6401]

So my question in listening to all this is would it make sense to wax the sponsons of say a ul-1? Since wax or a smooth hull tends to ride wet or stick more to the water do you think to would help reduce the deadly sponson dance a ul gets at WOT?!? Just a question and I may be complely in left field on this, but this just popped in my head.

[tharmer]

I think Sweet has the right of it. Shiny hulls create suction, dull hulls provide water/water boundry layer. It's one reason why sharks (and olympic swimmers) swim so fast. Doesn't make by itself a huge difference but in combination with a bunch of other things, helps.

Does this mean we shouldn't polish our rudders and fins?

-terry

[Fluid]

Since wax or a smooth hull tends to ride wet or stick more to the water do you think to would help reduce the deadly sponson dance a ul gets at WOT?!?

The reason for the "dance" is the geometry of the sponsons combined with speeds in excess of the design limit. I doubt very much that wax/no wax would make much difference.







.

[Cat-Boi]

400 grit. Sand all ride pads. definitely helps.