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Old 14 February 2006, 04:50   #1
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Chine Walking

What is chine walking? What's the best way to trim etc so as not to induce it? If it happens, how do you stop it?

Thanks.
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Old 14 February 2006, 05:05   #2
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Hi Andy

A Few things can cause chine walking, the most common is trimming up or out to much. If you do trim up or out to much then simply trim back down or in again.

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Jono
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Old 14 February 2006, 08:12   #3
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I used to have a Northcraft 5.8 that used to do it only at full bung. it was frightening. The hull would suddenly flip to the left, then back to the right. You had to be a wee bit sharpish on the throttle to kil it, In the end, the dealer fitted a wedge to the transom, so I could trim the motor down further, which cured it. It only happened in minor to flat seas, since it was these conditions that would get enough of the hull out of the water. The other thing I used to do to help prevent it was use water ballast in the bow, get about 4 plastic 25L drums full of seawater. Wasn't pretty, bit it worked. The thing about it was, whenever it happened, it was your crew that got the willies, not nice.
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Old 14 February 2006, 08:28   #4
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Quote:
Originally Posted by Andy Moore
What is chine walking? What's the best way to trim etc so as not to induce it? If it happens, how do you stop it?

Thanks.
The 'search' facility in this forum is quite excellent. I find that there are rarely any new topics surfacing, rather discussions and questions related to subjects already covered in great detail elsewhere.
Chine walking is a good example of this:
http://rib.net/forum/showthread.php?...ght=chine+walk
'Chine Walk'
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Old 14 February 2006, 19:34   #5
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Best boat to experience chine riding is a 5.4 searider they go all over the place.
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Old 14 February 2006, 22:03   #6
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Originally Posted by phantom 19
Best boat to experience chine riding is a 5.4 searider they go all over the place.
Thats not good to hear.
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Old 15 February 2006, 05:26   #7
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If not careful I reckon my boat could throw you out once it starts chinewalking.

Nearly caught me out the first time I experienced it.

Something I must remember next time I put a new engine on is not to open it flat out straight away. But there again that wouldn't be fun...
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Old 15 February 2006, 06:44   #8
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I am not a fan of the searider! I had a 5.4 centre console with yam 90 on it was terrible had to constantly fight it if you opened it up. I very nearly fell out on a flat day when it suddenly developed a chinewalk. I sold the SR for £500 and put the 90 with tuned ex. turning a 24" surface prop on a Ring 15 which was much more fun, you could really scare yourself chinewalking then.

Both of the old and newer styles of 4m seemed the same when equipped with upper end of hp rating.
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Old 15 February 2006, 07:11   #9
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Chine Walking

I must be doing something wrong!
Have had my Searider 5.4 for over 20 years and have never experienced chine walking.It was originally fitted with a Johnson v4 90hp and more recently with a Tohatsu 90hp.Both engines were fitted with Doel Fins on the cavitation plate and the boat is regularly used loaded with diving gear and empty.
Ask Nasher about chine walking,he fixed a long shaft Suzuki 55 to his 4mtr Flatacraft and the thing acted like a corkscrew first time out.We fixed a set of Doel Fins to it - no more problem !!
,
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Old 15 February 2006, 07:13   #10
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As previously posted the chine walking is caused by having the engine tilted up too far.

Tilt it back in and the chine walking goes, but you lose a few knots off the top end.

All comes down to getting particular experience on your boat.
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