Thread: New Findings..................
08-19-2007, 09:07 PM #1
Ive been wanting to do this for a while,so here it goes:
Ever noticed how your sponsons look more narrow at the rear of the ski.Well,they are.I used a laser and straight edge,level to triple check my measurments.I found the front of the sponson,outside to outside are 1" wider than the rear.Ever notice how the rear of the ski's hull, tapers towards the back,were the sponsons mount? I have not tested anything yet but i will.Is there any ecceleration gains? We will see.My thinking is that the sponsons are tapered in the rear,causing drag from the holeshot up through the mid range until the ski plains and the sp[onsons are out of the water @ WOT. Just something i wanted to share and its something ive been thinking about for over a year.
08-19-2007, 09:10 PM #2
Good info, WW.
By the way, I don't think the sponsons are ever all the way out of the water - or why would we step them?
08-19-2007, 09:11 PM #3
I took all my marks from the sponsons and transfered them to my garage slab,made my marks then ran a tape measure across my marks to get my measurments.I spent over an hour,triple checking my marks.I came up with the following: Marks were made from outside to outside,bottom of sponsons........
FRONT: 39 3/8
REAR: 38 3/8
the rear being 1" more narrow.
08-19-2007, 09:17 PM #4
Good point Dave.I have not put my sponsons all the way up and do a speed run yet.I always found that the stepping was stability from holeshot throughout the mid range but @ WOT ,they are pretty much out of the water.Maybe they are in a little bit.The only way to find out is to do a back to back run withy them stepped then all the way up.The problem is keeping the ski stable till your at that point to were you dont use them.
08-19-2007, 10:00 PM #5
Great find wood keep us posted
08-19-2007, 10:07 PM #6
- Join Date
- Apr 2006
- South MS
It seems the faster you go the higher the ski rides. On my ski it looks like the sponson is out of the water and even the outside edge of the tabs at top speed. I'm curious about the sponsons myself. Need some testing...
08-19-2007, 10:10 PM #7
This coming weekend i will test.Hope faster1200 comes out, this is the only way to tell is to have 2 ski's and test them side by side.
08-19-2007, 10:15 PM #8
I wonder if this will take out some of that low speed sway the GPR has at the rear of the boat.
08-19-2007, 10:15 PM #9
(The problem is keeping the ski stable till your at that point to were you dont use them)
Does this mean retractable sponsons are on the horizon? Sounds cool to me.
You get an A+ on your homework Woody, nice observation, details are everything...
08-19-2007, 10:18 PM #10
Thanks Ross.Like i posted above,it will be tough getting past that point were you need them.
How many of you are out in the garage looking at you ski's now?
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