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Old 25 October 2014, 08:10   #31
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Originally Posted by Dirk Diggler View Post
Here's a vid that shows how overpowering can be controlled, with a lot of knowledge, and a huge amount of ability...

Fast V-Bottom Boats - YouTube
wow .. 3 of my hulls have had planing pads .... but I couldnt drive any of them like that
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Old 25 October 2014, 08:15   #32
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[QUOTE=Dirk Diggler;652680]Actually, that's what we call a "trip and stuff"! there was no backing off, and there certainly wasn't a "hook" involved. Not really any chine walking either, as the driver had that under control. No driver error either, just a racing incident.

"Racing incident"...for sure..But IMO caused by Poor helming!
LIIKE I SAID "no backing off"..and if you DONT think he was Chine Walking befor he lost control...I suggest you take a closer look After all his fellow Racers were still Ok...and thankfully able to render assistance.
Trip/stuff Or Hook...debatable of maybe just semantics...
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Old 25 October 2014, 08:44   #33
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So unless I'm being thick which is very possible... Adding more power increases the risk of chine walk. You can reduce the risk of chine walk by tweaking the set up and the helm's skills. But presumably at some point even those tweaks will over power the balance. Perhaps less of an issue on a mill pond.

We all seem to want a single number that is Max power. Really you enter a grey zone that may be over powered for the setup, load, helm, conditions, but might not be for another. On the other hand there must be a point where you leave grey and hit brown. . . where even the best helm with perfect set up and ideal conditions can't keep it from being imbalanced...
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Old 25 October 2014, 10:36   #34
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[QUOTE=Maximus;652691]
Quote:
Originally Posted by Dirk Diggler View Post
Actually, that's what we call a "trip and stuff"! there was no backing off, and there certainly wasn't a "hook" involved. Not really any chine walking either, as the driver had that under control. No driver error either, just a racing incident.

"Racing incident"...for sure..But IMO caused by Poor helming!
LIIKE I SAID "no backing off"..and if you DONT think he was Chine Walking befor he lost control...I suggest you take a closer look After all his fellow Racers were still Ok...and thankfully able to render assistance.
Trip/stuff Or Hook...debatable of maybe just semantics...
You need a ride in a quick boat..

How can it be "bad helming" he was in a race, out front, not backing off, which is how his fellow racers were able to render assistance, as they were behind him! Without the steering inputs he was making, he may well have been chine walking, but his skill behind the wheel prevented it.

And believe me, you'd know the difference between a hook and a stuff if you had one, simply put, a stuff is where you crash dive like a sub, a hook is where your bow is deflected causing the boat to try and turn sharply, and the arse of the boat tries to overtake it, quite often resulting in a roll.
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Old 25 October 2014, 10:41   #35
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So unless I'm being thick which is very possible... Adding more power increases the risk of chine walk. You can reduce the risk of chine walk by tweaking the set up and the helm's skills. But presumably at some point even those tweaks will over power the balance. Perhaps less of an issue on a mill pond.

We all seem to want a single number that is Max power. Really you enter a grey zone that may be over powered for the setup, load, helm, conditions, but might not be for another. On the other hand there must be a point where you leave grey and hit brown. . . where even the best helm with perfect set up and ideal conditions can't keep it from being imbalanced...

More or less, yeh. but as the vid shows, a 16ft boat with around 260hp, which you'd have to consider as being grossly overpowered (by CE regs) can be driven without chine walking, if it's set up properly, and you know what your doing.
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Old 28 October 2014, 07:21   #36
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a lot of power is never enough, too much power is just right
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Old 28 October 2014, 07:56   #37
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a lot of power is never enough, too much power is just right
Ain't that the truth!

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Old 30 October 2014, 23:46   #38
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I'd have thought that would be obvious to you. Are you suggesting that power is not a significant contributing factor in chine walking?

Which bit of my logic is flawed?

Increased power = faster. Faster = more lift. More lift = less surface area in the water. Less surface area = more likely to imbalance. Imbalance + high speed = chine walk.

The advice always given here to people who experience a chine walk is to back off the throttle. There is other advice about trim, engine height etc to try to prevent it - but the universal message is that to stop it rather than make it less likely: slow down.

!
Inaccurate methinks.

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re the Chine walking you can drive through it, It just takes a little while to feel the wheel as it were ( and that's about four trips so don't be impatient)
I have posted this advice many times on this forum so I don't see how the forum always advises slowing down.

re Diggler its best to ignore him! The way he goes on you'd think he was some kinda power boat racer, race boat builder or holder of several water speed records where as in fact he just a big nob
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Old 31 October 2014, 06:48   #39
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Originally Posted by Rogue Wave View Post
Inaccurate methinks.



I have posted this advice many times on this forum so I don't see how the forum always advises slowing down.

re Diggler its best to ignore him! The way he goes on you'd think he was some kinda power boat racer, race boat builder or holder of several water speed records where as in fact he just a big nob
Stu,

I do seem to remember that you've been spat out of boats on several occasions - is this the four times you refer to?

Cheers

Duncan
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Old 31 October 2014, 07:25   #40
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I have posted this advice many times on this forum so I don't see how the forum always advises slowing down.

re Diggler its best to ignore him! The way he goes on you'd think he was some kinda power boat racer, race boat builder or holder of several water speed records where as in fact he just a big nob
Stop it, you'll make me blush!
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