what prop? 91 42 Fountain? trip 540's
09-20-2006, 06:54 AM
#4
Registered
Re: what prop? 91 42 Fountain? trip 540's
If your motors are supposed to run at 5600 then it sounds like you are close to where you need to be. Speed seems consistent with power.
Are the props you have now Bravo 1 props? If so, what's wrong with them? If they are just old looking with nicks here and there they could be reconditioned to look and perform as good or better than new.
If they are "worn out" then replacements would be the way to go and we would need to know what brand they are, if they are not Bravo 1 props.
Matt
Are the props you have now Bravo 1 props? If so, what's wrong with them? If they are just old looking with nicks here and there they could be reconditioned to look and perform as good or better than new.
If they are "worn out" then replacements would be the way to go and we would need to know what brand they are, if they are not Bravo 1 props.
Matt
09-20-2006, 08:01 AM
#6
Registered
Re: what prop? 91 42 Fountain? trip 540's
When I use the term worn out I am referring to the props being run through the sand which thins them, metal fatigue, over working (too many reconditions or adjustments), electrolysis, many small cracks, etc.
09-20-2006, 10:20 AM
#7
Offshoreonly Advertiser
Offshoreonly Advertiser
Re: what prop? 91 42 Fountain? trip 540's
When I think of worn out props I think of all the things Matt said plus others including "laid back" blades.
Over many years in this business, one thing I was taught early on and that is reinforced to me daily is..........The best looking most perfectly built propeller may not be the best propeller on the boat! Sometimes a scratched, bent, out of balance propeller will out perform a perfectly matched propeller. Go figure. I used to see it in the tunnel boat racing circuit time and time again with the Seebolds. The best and fastest propeller on the boat is the best and fastest propeller on the boat. There are too many variables in water, hydrodynamics, weight and balance, etc. to make many blanket statements about propellers.
Once you find a prop that carries the boat correctly and runs efficiently, you are there. That being said, you should still maintain your propellers to prevent cracking of blades and to prevent other component failures. Like prop shaft seals.
The props you have are a perfect match for your boat as far as WOT efficiency, and the numbers reflect that at 10.5% slip. Get the props reconditioned to original spec. if the 5600 WOT rpm is correct. Otherwise, there are many other options including pitches and Labbing.
Over many years in this business, one thing I was taught early on and that is reinforced to me daily is..........The best looking most perfectly built propeller may not be the best propeller on the boat! Sometimes a scratched, bent, out of balance propeller will out perform a perfectly matched propeller. Go figure. I used to see it in the tunnel boat racing circuit time and time again with the Seebolds. The best and fastest propeller on the boat is the best and fastest propeller on the boat. There are too many variables in water, hydrodynamics, weight and balance, etc. to make many blanket statements about propellers.
Once you find a prop that carries the boat correctly and runs efficiently, you are there. That being said, you should still maintain your propellers to prevent cracking of blades and to prevent other component failures. Like prop shaft seals.
The props you have are a perfect match for your boat as far as WOT efficiency, and the numbers reflect that at 10.5% slip. Get the props reconditioned to original spec. if the 5600 WOT rpm is correct. Otherwise, there are many other options including pitches and Labbing.
__________________
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
09-26-2006, 04:55 AM
#9
VIP Member
Re: what prop? 91 42 Fountain? trip 540's
Sounds like you need to buy a full set of stock 26P 4 blades, and ship them along with your old props to a qualified lab shop. They can read each prop that you started with and begin with a closely tweaked new prop.
