Thread: salt versus fresh
05-19-2008, 08:38 AM #1
salt versus fresh
riding fresh water, my ski runs 82mm ring, gets 8480rpms, 82 mph...
riding salt water, useing 84mm ring, gets 8180rpms, 76-77 mph...
tried different props, rings... these were the best speeds....
is this normal? can i do anything to help close the diference in top speed???
05-19-2008, 08:40 AM #2
i think as long as the acceleration is there , chances are you wont be able to hang on at those speeds in the ocean anyways.
05-19-2008, 08:41 AM #3
I would imagine since ocean water is denser than fresh.
We ride a river that dumps into the ocean. You can feel when you start transitioning from slat to fresh and vice versa
05-19-2008, 08:42 AM #4
05-19-2008, 08:44 AM #5
05-19-2008, 08:46 AM #6
i just dont understand the rpm and speed drop... seems like its too big of a difference... i change the ring from 82 in fresh to a 84 in salt....should be closer than 5mph difference...
05-19-2008, 08:53 AM #7
think of it this way
what is easier to pump water or oil.
With denser water the resistance is greater against the pump as it is pushing out the water.
Don't forget the thermal issues too. Warmer and colder water play havoc on ballast and speed.
05-19-2008, 08:53 AM #8
- Join Date
- Jul 2006
I forgot who posted the info.. but someone in Miami listed the props that got his Rude SC rxp to do 80 in salt water then the prop that got him to 80 in fresh.. he did have to change props to do 80 in salt VS. fresh
05-19-2008, 08:56 AM #9
05-19-2008, 09:01 AM #10
im trying to be get the best set up for my ski at mudbug.... got a real eye opener in st. pete... i thought my ski was running like shit... when i got back, i changed the ring from 84 to 82, dropped ski in fresh water... no problems, doing 81-82, 14 pds of boost , 8480 rpms...
trying to get the right combo to be optimal at the bug...
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