I saw these chine extensions on Bertram at the yard today, do they really provide extra lift?
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Thread: Chine extensions?
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Chine extensions?
Pascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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12-04-2017 12:28 PM #2Senior Member
- Join Date
- Jun 2007
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Re: Chine extensions?
Here's some on a 41c I saw in a yard. Can't comment on if they work or not.
FTFD... i drive a slow 1968 41c381
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Re: Chine extensions?
I was told from Sam's think it was Steve I was talking to and he said some times yes and sometimes No.
I did the smart rails which is that first picture and it did nothing for lift or speed. After I repower I cut them off I found in a beam sea they would grab and make the boat a little squirrelly.
I did a bottom job, lift rails, added block to tabs to push bow down and lighten the boat some it was still Slow change the horse power to 33% more and that workedDan
End Of The Line II
1967 34C
EOTL II Rebuild Web Page
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Re: Chine extensions?
I’ve seen those done on Bayliner‘s. It helps with the rolling motion more than lift.
SEVEN
1979 53' MY Hull #563
Antioch, California
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Re: Chine extensions?
Some years ago trawlers with soft chines were getting these to reduce roll at anchor.
Bobk
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12-04-2017 04:41 PM #6Senior Member
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- Apr 2005
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- 2,771
Re: Chine extensions?
One of my friends installed them on his 1968 38C and he said that the only benefit he had was less
spray.
Walt
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12-05-2017 01:33 AM #8Senior Member
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- Apr 2014
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Re: Chine extensions?
As stated, they are usually used for stability at rest. A hard chined boat is inherently more stable but less fuel efficient. The Bayliner motoryachts (4588, 4788) use foam filled chine extensions to convert them to hard chine and also add buoyancy to the stern as they are underpowered and need help getting the bow down.
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12-07-2017 07:00 AM #10Senior Member
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- Jan 2010
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- 133
Re: Chine extensions?
Bennett now makes cylinders with 3 1/2" travel rams. Standard has always been 2 1/2". You need to retrofit by making your own starboard adapter. Can't wait to install them over the winter.