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Help with prop to Chris Craft 260 Stinger

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Old 07-29-2020 | 07:20 AM
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Originally Posted by JohanSweden
He hajusve it on his own boat now, dont know if he wants to take it off. But I can ask.

Thinking of buy a 22P Bravo.
just sold my 22" bravo few weeks ago to my friend. I can ask if it is for sale. I think 22" is what you need, but time will tell.
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Old 07-29-2020 | 07:44 AM
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Bravo 22" is not for sale. If you dont find any 22 bravo, 21 or 22 revolution 4 would be worth to try or better than bravo, who knows.
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Old 07-29-2020 | 01:33 PM
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Originally Posted by JaniH
Bravo 22" is not for sale. If you dont find any 22 bravo, 21 or 22 revolution 4 would be worth to try or better than bravo, who knows.
There is one 22P bravo on blocket.

And only two 25P Revolution 4 props on blocket too.
The revolutions is 14,6” in diameter - vs bravo that is 15”
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Old 07-31-2020 | 09:26 AM
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Here is some new numbers with the bravo XR lower. I think the ratio is still 1:1.36.

About 4300 rpm @ 50 mph / 43-44 knots.





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Old 07-31-2020 | 11:01 AM
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What was the setup before all the engine upgrades? What did it run with original setup/power?
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Old 07-31-2020 | 11:07 AM
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Originally Posted by PA.WOODCHUCK
What was the setup before all the engine upgrades? What did it run with original setup/power?
The boat had 2x 260 merc and alpha drives.
Then it was rebuild to a single diesel VP engine with VP drive.
And now the 496 Merc and bravo One drive.

Dont know what it run with the original setup but maybe around 50.. I dont know actually
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Old 07-31-2020 | 11:19 AM
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If it's a 496, you need to get rpm up to around 5000rpm. You need different pitch prop. Hopefully the engine is strong.
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Old 07-31-2020 | 11:34 AM
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Originally Posted by underpsi68
If it's a 496, you need to get rpm up to around 5000rpm. You need different pitch prop. Hopefully the engine is strong.
Yes. I have a 26P bravo prop now.

With 4300 rpm I have like 700-800 rpm to catch. Like we mentioned before I believe a 22P bravo would be good
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Old 07-31-2020 | 02:44 PM
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This is weird case. Buy or borrow stock bravo 1 prop!!!!! The prop is out of specs or your coupler is done. Stil 33% slip. Take white marker penn and draw line to the coupler, take a ride and check the marked line. Dont know how the bravo coupler fails, but the smaller coupler used with alpha drives can slip before it fails completely.
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Old 07-31-2020 | 03:27 PM
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Originally Posted by JaniH
This is weird case. Buy or borrow stock bravo 1 prop!!!!! The prop is out of specs or your coupler is done. Stil 33% slip. Take white marker penn and draw line to the coupler, take a ride and check the marked line. Dont know how the bravo coupler fails, but the smaller coupler used with alpha drives can slip before it fails completely.
What is the coupler on the drive? Can you show me a picture.

On the way back home I took some photos on the GPS speed and rpm gauge.
Now it shows 46,3 knots/ 53,2 mph @ 4400 rpm.... Yes this is weird lol.... A slip number of 30%




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