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Old 02 January 2009, 13:15   #1
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Country: UK - England
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Honda BF20 Propellor

Hi to you all on this great forum.

I have recently bought a Honwave 4m and Honda BF20 and am really pleased with it- so much in fact, we were out enjoying it on Christmas day (cold but great)!

The question i have is can anyone recommend a prop upgrade over the standard and will it make much difference to the performence? I dont want to splash out for minimal gain.


Your advice really appreciated.

Gibbo
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Old 02 January 2009, 15:12   #2
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Welcome to Ribnet

Unless you've got a way to measure the RPM the engine is making at wide open throttle, stick to the one you've got as there's no benchmark without a WOT RPM figure.
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Old 02 January 2009, 15:19   #3
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Thanks Nos,

Is it possible to connect a temporary rev meter?

Gibbo
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Old 02 January 2009, 15:24   #4
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Yes-you'd probably need a tiny tach or similar that'll record max rpm reached. It's a lot of expense for very little (if any) gain though. You'd need a GPS or something else to measure speed too.
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Old 03 January 2009, 12:02   #5
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Quote:
Originally Posted by gibbo500 View Post
Hi to you all on this great forum.

The question i have is can anyone recommend a prop upgrade over the standard and will it make much difference to the performence? I dont want to splash out for minimal gain.

Your advice really appreciated.

Gibbo
Factory delivered props are generally medium size pitched props to move light to medium boats loads, a tacho is a must to determine max rpm obtained at WOT. If in the need to achieve max rpm stated for that engine, simply play with a less pitch prop as current in use to obtain higher rpm's, you'll need extra props to test and a tacho, too much issue, unless you find a good Samaritan to help you out, personaly would stick with my current prop.

Happy Sibbing
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Old 03 January 2009, 12:12   #6
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Thanks to you both for the advice. Think i will keep with what is on there and waste my money on something else (probably something i don't really need).

Cheers
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Old 03 January 2009, 12:19   #7
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Originally Posted by gibbo500 View Post
Thanks to you both for the advice. Think i will keep with what is on there and waste my money on something else.....probably what i don't really need.

Cheers
You are welcome, that's the purpose of Rib Net.

Honwave 4.0 and 20 HP engine is a very nice combo package, should perform excellent, light sib with adequate power, enjoy it!

Happy Sibbing
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Old 03 January 2009, 13:01   #8
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I bought a Propulse composite four blade prop that has adjustable pitch for my Zodiac futura. It is my understanding that my outboard would perform better and last longer if the WOT rpm was in the range specified for my outboard. How big of a deal is that? I could never have guessed in advance the correct pitch to attain that rpm. It was easy to change the pitch on the composite prop. Also a nice item for running in shallow rocky places. I would rather lose a blade than jolt my drive. In Mex I carry my old solid three blade as back up. Didn't significantly change my top speed, but helps pull up a wakeboarder. You might want to check it out. In my case the standard prop had low rpm at WOT.
http://www.westmarine.com/webapp/wcs...classNum=11671
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