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Old 30 April 2007, 03:25   #11
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Country: France
Town: caen
Boat name: labrax II
Make: HUMBER 600 DESTROYER
Length: 6m +
Engine: DF 140 SUZUKI
Join Date: Nov 2006
Posts: 83
I tried yesterday a 14X21 prop.

It was better, but...

With five persons on board, 37,7 knt, but still 6200 (at least) rpm.

It's too much, and i will try a 14X23 next week.

Antoine
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Old 30 April 2007, 03:37   #12
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Country: Italy
Town: Ravenna
Boat name: isla II
Make: sessamarine
Length: 6m +
Engine: otboard yamaha f 150
Join Date: Apr 2007
Posts: 7
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Quote:
Originally Posted by antoine View Post
Hello,

I tried my new rib last monday, and the propeller is too short.

The prop is a 14X19.

Max speed 36knt with 6300 rpm.

If someone with the same boat can help a poor french ribman...

I think a 14X21, or perhaps a 14X23 could be a better choice.

Thanks

Antoine
in theory to pass from 19 " to 23 ", the motor would have to come down of 800 turns the average e' 200 turns to inch
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Old 21 May 2007, 08:03   #13
Member
 
Country: France
Town: caen
Boat name: labrax II
Make: HUMBER 600 DESTROYER
Length: 6m +
Engine: DF 140 SUZUKI
Join Date: Nov 2006
Posts: 83
Hello,

I tried a 14X23 prop last WE and it seems to be better:

42 knts and 6100-6200 rpm.

Two persons on board, about 85 L...

Antoine
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Old 21 May 2007, 08:15   #14
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Country: Other
Town: Oakley
Boat name: Zerstörer
Make: Ribcraft
Length: 5m +
Engine: Suzuki DF 140
MMSI: 235050131
Join Date: Jun 2003
Posts: 3,931
A + Adonf,

I have doen some research on my Suzuki DF 140.

Below is the link.

http://rib.net/forum/showthread.php?...uzuki+140+prop

Basically I ended up with a custom 22" prop. Far better than the Suzuki job. Just waiting for a new one as I've bent my old one but thats another story.

Regards Nick.
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