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Salt Really Is Faster Than Fresh

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Old 06-01-2004, 08:55 AM
  #1
WickedWon
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Default Salt Really Is Faster Than Fresh

Finally proved it to myself, brought the Concept up from the Keys and ran it with the exact same fuel ( 100+ gal.), bent props, and junk load as when it went on the trailer in FL. Both runs were into a 15+ mph wind and a 2' chop. In Fl I had 80 deg. air and water temp and 8' of " slack" water. In OH (Sandusky Bay, Lake Erie) I had 70 deg air and 65 deg. water temp and 8' of "slack" water.

Saltwater it ran 73.9

Freshwater it ran 71.4

Maybe this explains why all those Florida boat never show us the big #'s when they show up on lake Erie

Yeah, Yeah, I know the boats slow, but I'm also honest facts ...just facts.
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Old 06-01-2004, 08:57 AM
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GLH
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Default Re: Salt Really Is Faster Than Fresh

Maybe YOU gained weight.
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Old 06-01-2004, 08:57 AM
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Default Re: Salt Really Is Faster Than Fresh

maybe that makes the fish colorful down there
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Old 06-01-2004, 08:59 AM
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Default Re: Salt Really Is Faster Than Fresh

Also you better let Mary park a boat and truck sideways thru parking slots like that, if someone with your admirable looks would do that they might get the yellow beat out of themselves!
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Old 06-01-2004, 09:44 AM
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Default Re: Salt Really Is Faster Than Fresh

Now that the "little" boat is up here are you going to meet us next weekend?
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Old 06-01-2004, 11:12 AM
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Default Re: Salt Really Is Faster Than Fresh

Hi Jim!
Yeap, salt water is more dense than fresh water, hence the boat is more bouyant in salt water and the props have a more solid medium to "hook-up" in. I got a question for ya though, did you see any difference in rpm's in salt vs. fresh water. Just a thought, boat is more bouyant in salt and sits higher in on the water than fresh, more speed, more rpm. Then on the other hand, fresh water is less dense, so the props should spin up further.

On another note, no the 41 ain't together yet, hope to be painting the gimbles this week so TNT can get all that put back together. So, SOTW ain't looking real good, sorry buddy. Hey mark Sept 12 on your calender, that's the big day!

Robert
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Old 06-01-2004, 12:18 PM
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Default Re: Salt Really Is Faster Than Fresh

true, the hull is more buoyant due to increased water density...but there is also more drag on everything that is in the water as well as horsepower robbing drag on the propellers too. inefficient hulls will benefit more from salt h20 than some of the very efficient hulls that are running now.

todays propellers have no problem "hooking up"....how much do you want???

also the number you want to look at is AD or air density...most fresh h20 is above sea level.
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Old 06-01-2004, 12:33 PM
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Default Re: Salt Really Is Faster Than Fresh

BTW, WW,,,your cc boat rocks!..i'm jealous
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Old 06-01-2004, 12:59 PM
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Default Re: Salt Really Is Faster Than Fresh

Audacity, I was just curious if the props turned a little more rpm in the freshwater due to it being less dense. I know Jim is a prop "nut" so to speak trying all kind of different stuff on his 41. Then you bring another point I didn't think about, the added drag on the under water hardware. Where does it all stop, I'm so confused! Not that that's hard to do! I know I'm fix'n to have to play the prop game with the 41 so listening to what people have to say.

Robert

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Old 06-01-2004, 01:02 PM
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Default Re: Salt Really Is Faster Than Fresh

Quote:
Originally Posted by Madcow
Now that the "little" boat is up here are you going to meet us next weekend?
Hey Jim .... whats going on next weekend ???


JM
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