Reducing slip?
#1
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Thread Starter
Reducing slip?
I want to reduce my slip numbers. Any ideas?
33' no step hull, twin 525's. bravo XR with ITS.
28" labbed, 81 MPH at 5300+- RPM.
30" labbed 83 at 5200 RPM.
32" labbed 81 at 4950 RPM.
All numbers in calm waters. Boat will go faster when its in chop or rough seas, and RPM's go up a bit, but the slip numbers are high no mater what props I use.
Any ideas? I had the boat at 85, but any other props then Bravos might work?
thx
P
33' no step hull, twin 525's. bravo XR with ITS.
28" labbed, 81 MPH at 5300+- RPM.
30" labbed 83 at 5200 RPM.
32" labbed 81 at 4950 RPM.
All numbers in calm waters. Boat will go faster when its in chop or rough seas, and RPM's go up a bit, but the slip numbers are high no mater what props I use.
Any ideas? I had the boat at 85, but any other props then Bravos might work?
thx
P
#2
Charter Member # 55
Charter Member
First of all when calculating slip for Bravo props, you need reduce the stamped pitch by one inch when you plug in the numbers.
The 28 is at 10%
The 30 is at 13%
The 32 is at 16%
The 32 is a little high, but the 28 and 30 are fine for a straight V bottom.
Reducing slip increases the bite of the prop and thus stresses the drive more also.
The 28 is at 10%
The 30 is at 13%
The 32 is at 16%
The 32 is a little high, but the 28 and 30 are fine for a straight V bottom.
Reducing slip increases the bite of the prop and thus stresses the drive more also.
#3
Gold Member
Gold Member
First of all when calculating slip for Bravo props, you need reduce the stamped pitch by one inch when you plug in the numbers.
The 28 is at 10%
The 30 is at 13%
The 32 is at 16%
The 32 is a little high, but the 28 and 30 are fine for a straight V bottom.
Reducing slip increases the bite of the prop and thus stresses the drive more also.
The 28 is at 10%
The 30 is at 13%
The 32 is at 16%
The 32 is a little high, but the 28 and 30 are fine for a straight V bottom.
Reducing slip increases the bite of the prop and thus stresses the drive more also.
#4
Chris
Gold Member
Who the heck cares about slip...which prop is fastest..and working best on your boat.
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
Last edited by CB-BLR; 05-31-2011 at 01:48 AM.
#6
Charter Member # 55
Charter Member
Who the heck cares about slip...which prop is fastest..and working best on your boat.
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
#7
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#8
Gold Member
Gold Member
Who the heck cares about slip...which prop is fastest..and working best on your boat.
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
As soon as I stopped concentrating on slip...and started paying attention to which props were the fastest...and made the boat handle the best...my boat started getting a lot faster.
Chris
#9
Chris
Gold Member
Your statement doesn't make sense.
Chris
#10
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Try it and find out but I think there would be alot of vibration with that scenario but it is not really an accurate representation of "slip", and that would be under completely different conditions that normal "slip" which he is refering to.