Lab Finished Props
04-23-2007, 06:47 PM
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Lab Finished Props
Question - do you think I can pick up 2 MPH by getting a Labbed finished 15 1/4 by 26 Bravo 4-blade? I am currently running 82MPG with a 525 EFI w/1:33gears. Is it worth the $900 for 2MPH? Thanks
04-24-2007, 12:30 AM
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Steve
What rpm are you turning. I calculate 5250 which means you are on the rev limiter for that motor. I suggest a labed 28 pitch. I run only labed props on my boats. they are good for 3 mph and a few hundred rpm but that only works if you are several hundred below the rev limiter. I think that boat and motor should easily run 86 mph with the proper prop.
If you think $900.00 is expensive you should know I spent more than 4 times that for two herrings and 3 mph but worth every bit of it.
Art
What rpm are you turning. I calculate 5250 which means you are on the rev limiter for that motor. I suggest a labed 28 pitch. I run only labed props on my boats. they are good for 3 mph and a few hundred rpm but that only works if you are several hundred below the rev limiter. I think that boat and motor should easily run 86 mph with the proper prop.
If you think $900.00 is expensive you should know I spent more than 4 times that for two herrings and 3 mph but worth every bit of it.
Art
Last edited by quest; 04-24-2007 at 12:35 AM.
04-26-2007, 06:34 PM
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Rob
04-28-2007, 11:24 PM
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That Boat Will Go 88mph With That Power. Might Want To Try Less Diameter Prop And Get It To 5200rpm. Check Your Drive Height. How Far Is The Prop Shaft Below The Center Sponson
05-01-2007, 05:47 AM
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I have 2 labbed 26 B1 rh sitting on the shelf with no use. sold the boat they were on. One done by mercury the other by throttle up. your choice 600.00 ea. and they are close to home 20 minutes.
05-01-2007, 10:19 AM
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The Mercury 525 motor needs to run at 5350-5400 RPM at WOT to achieve max top end. You need 450-500 RPM actually to do so. I would recommend that you try some different props before labbing. Maybe quest can post his Bravo performance numbers as well as his Hering numbers, to help you out.
Julie
Julie
