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Old 01 January 2004, 13:40   #1
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'Chine Walk'

Can someone please explain Chine walk to me.
How is it caused etc, etc.

I'm just curious!

Pete
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Old 01 January 2004, 13:49   #2
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Charles has a good explanantion here http://rib.net/forum/showthread.php?...ght=chine+walk

Although i disagree with his comment concerning 65mph+ since i have driven boats that chine walk at 40knts.
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Old 01 January 2004, 13:51   #3
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When the boat slaps from side to side at high speed. Usually at the performance limit of the hull, or if the weight distribution isn't right. Commonly caused by large (powerful&heavy) outboards on small to medium-ish RIBs with all the weight at the back.

Larger, modestly powered boats with balanced weight distribution won't usually experience it.
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Old 01 January 2004, 13:53   #4
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Quote:
Originally posted by Daniel
i have driven boats that chine walk at 40knts.
Agreed - I think that the smaller the boat, the lower speed that chine walking may start.
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Old 01 January 2004, 14:05   #5
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Thanks,

So as I understand it

big engines + little boats = Chine Walking (maybe)!

So not enough hull in the water will start this off!

CAN this be trimmed out by trim & tilt (without sacrificing too much speed) ?

Pete
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Old 02 January 2004, 00:50   #6
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I had an Avon 4.7 Sea rider ( I loved that boat and still miss it )
with a Yamaha 70. She was a Pocket rocket and topped out at 42 knots, between aabout 33 and 38 knots she Chine walked quite badly but after a bit of practice I found that I was able to power through it,

The trim did help little bit but I found that by limiting my corrections to the steering when chineing was by far the best way of getting around it. Very very slight movements of the wheel will make it easier to control.
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Old 02 January 2004, 06:54   #7
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I've always found that one of the most common reasons for the problem is slack steering and or worn engine mounts!! and I dont mean the bolts through the transom.
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Old 02 January 2004, 07:06   #8
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Q 4 D-D...

Are deep V hulls more prone to chine walk than shallow V, and are RIBs more prone to chine walk with bouncy bits attached to either side?
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Old 02 January 2004, 07:08   #9
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Richard - "bouncy Bits" are you talking about the ball and chain
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Old 02 January 2004, 07:12   #10
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Jackeen

Your life expectancy isn't looking good, mate!!
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