First time out
05-14-2010, 01:34 PM
#21
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i personally picked up 9 mph with -2 shorties with no boxes and absolutly no other changes. With that being said my boat really frees up around 95 mph which is where I was stuck prior to the shorties. Mine is a 98 so is probably similar in weight to yours.
Also 95 mph at 5000 rpm with 30 pitch props and 1.50 drives would be zero slip. This is not likely. Some number somewhere must be off.
Also 95 mph at 5000 rpm with 30 pitch props and 1.50 drives would be zero slip. This is not likely. Some number somewhere must be off.
these cat are usally 6-8 maybe 10% slip???
Phil
05-14-2010, 01:54 PM
#22
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Handhelds are accurate. Check your ratio first. Based on the bottom side of the hatch your boat may have had blowers at some point so the ratio may not be 1.50. If it is 1.36 then your slip is reasonable and your speed is reasonable based on the data you provided. If they are 1.50 then I question rpm.
Slip depends on the boat. A wise man once told me to work on slip first and the speed will come.
Slip depends on the boat. A wise man once told me to work on slip first and the speed will come.
05-14-2010, 02:37 PM
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I also believe he has 1:36 ratio, My Buddy's 31 Awesome w/500efi's 1:36 with stock 30P (not labbed) no boxes, runs 92-93 @ 5100 ish , correct me is I'm wrong Bill.
, so having labbed B1 & boxes netted him a couple MPH
, so having labbed B1 & boxes netted him a couple MPH
05-14-2010, 02:46 PM
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I will check that gear ratio. I think you are right. I ran it on the prop calc. and with 9% it puts me at 95.
Randy are you going in this weekend?
Randy are you going in this weekend?
05-17-2010, 01:38 PM
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I was out for a quick ride on Saturday, I buzzed by the pier @110
felt real nice, I'll be out this week end, hopefully the weather cooperates
It's been a long winter.
