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Old 14-06-2006, 01:50 PM   #21
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I guess it's possible, but generaly speaking, cleavers need to be spun real fast if they're struggling for grip.
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Old 14-06-2006, 02:15 PM   #22
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Surely prop cavitation is the boat equivalent to wheelspin in a car. So the same rules should be applied? Wheelspin results in little forward movement and lots of engine revving, better to feed the power in at a rate the characheristics of the car can handle (unless its got a ltd slip diff/traction etc). Noisey was being revved so high, but surely anyone with some understanding of the problem would have tried to nurse it up to the plane whilst keeping cavitation to a minimum? Bit like running slicks on a race car with real high lift cams - loads of BHP and top end, but no tourque and little grip - would be all about loads of control and good clutch work out of the blocks.
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Old 14-06-2006, 02:16 PM   #23
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Not the only one, think back a few years Apache, Roman Sabre + others all had a long winded planning procedure which on more than one occasion included towing onto the plane with one or more vessels. Some days they just wouldn't due conditions or would miss the start by up to 20 mins.
Its very easy to spend others hard won pennies but it really could do with somethin, coz at the end of the day it should FUN, which I suspect quickly dissapeared on the day
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Old 14-06-2006, 02:45 PM   #24
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Plus I remember the Jag powered tin mono Goldrush screaming it's head off trying to get on plane after leaving the harbour at Cowes many moons ago. Great to listen to but tough on the machinery.
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Old 14-06-2006, 02:49 PM   #25
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It's not the same at all. It "can" be the same, but it's much more complicated because a boat doesn't have gears or a clutch.

Some props, you're right, babying the boat onto the plane works, but cleavers in particular don't work until the boat is planing.

Quote:
Originally posted by Biggest Arms
Surely prop cavitation is the boat equivalent to wheelspin in a car. So the same rules should be applied? Wheelspin results in little forward movement and lots of engine revving, better to feed the power in at a rate the characheristics of the car can handle (unless its got a ltd slip diff/traction etc). Noisey was being revved so high, but surely anyone with some understanding of the problem would have tried to nurse it up to the plane whilst keeping cavitation to a minimum? Bit like running slicks on a race car with real high lift cams - loads of BHP and top end, but no tourque and little grip - would be all about loads of control and good clutch work out of the blocks.
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Old 14-06-2006, 03:05 PM   #26
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my mates sr8 is same, usually two people and gently does it on the throttle gets her up.. but i always wonder why he trims down to get his surface piercers biting to get on the plane... wouldnt he better triming up and letting them spin??
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Old 14-06-2006, 03:06 PM   #27
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No. You're trying to get the boat over the hump. Trimming up makes the "hump" bigger.
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Old 14-06-2006, 03:10 PM   #28
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If cleavers don't work until you get it on the plane, how are you supposed to get it on the plane? At least in Noiseys case, revving the bollocks off them, clearly doesn't work, as we saw at the weekend. I would like to see him at least try being a bit more sensative with the throttle. I understand you don't have a clutch on a boat, so surely even more reason to feed the power in more carefully.
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Old 14-06-2006, 03:14 PM   #29
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I think Noiseys biggest problem is its CG.
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Old 14-06-2006, 03:18 PM   #30
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By "don't work", I mean they only work a very little bit, hence difficult to get on the plane. Once planing, they're very good.
When Ben throttles him, they usually manage to get there in the end. So there's obviously a technique involved for Mr Noisy.
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Old 14-06-2006, 03:18 PM   #31
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Disagree. CG is about right once the boat is running.
Props are the biggest problem.

Quote:
Originally posted by Biggest Arms
I think Noiseys biggest problem is its CG.
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Old 14-06-2006, 03:20 PM   #32
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sorry matt my mistake, he jacks the plate down and trims in
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Old 14-06-2006, 03:22 PM   #33
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is the truth of the matter......... that Mr noisy needs to key componants addressing?

More time
More money

??
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Old 14-06-2006, 03:33 PM   #34
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Quote:
Originally posted by Biggest Arms
If cleavers don't work until you get it on the plane, how are you supposed to get it on the plane? At least in Noiseys case, revving the bollocks off them, clearly doesn't work, as we saw at the weekend. I would like to see him at least try being a bit more sensative with the throttle. I understand you don't have a clutch on a boat, so surely even more reason to feed the power in more carefully.
Sounds like he needs more paitence, when we had a cleaver on Patriot it was always a bitch to get on the plane, uncle would revs the arse of it and try to use the wave created to push him up, but dad would apply the throttle gently then as it got up give it a bit more and get it planing in a fraction of the time and revs.
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Old 14-06-2006, 03:35 PM   #35
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Well one thing is for sure Mr Noisey stands a far better chance of racing with all the members of the forum behind her, as there is so much knowledge between the members somebody will find the right prop's for hopefully a reasonable price or maybe another type pf fiX? so we can all hear the fantastic sound of those big blocks again
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Old 14-06-2006, 03:35 PM   #36
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Quote:
Originally posted by Matt
Disagree. CG is about right once the boat is running.
Props are the biggest problem.
But if he runs out of inward trim and he still can't get over the hump regardless of throttle technique, surely a little more weight at the front would help. This boat has 3 engines right? Thats gotta make the arse damn heavy.

Going back to a comment earlier, if the props are so bad for this, surely actually being able to get on the plane quickly is more advantageous than the extra top end, especially if you cant even get there at all!
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Old 14-06-2006, 03:50 PM   #37
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2 engines, staggered.

A bit more bow weight might help get on the plane - but it has a 'kin huge bow tank already.

Prop availability is the problem - it has strange merc racing drives on it.
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Old 14-06-2006, 03:53 PM   #38
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Has anyone here that's arguing for the gently, gently approach considered the possibility, that the various, experienced race drivers that have driven this boat may have tried it already?

It needs different props, end of.
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Old 14-06-2006, 03:54 PM   #39
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OK, well, whatever his problems are, lets hope he fixes them soon, would love to see/hear that beast on form ...
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Old 14-06-2006, 03:59 PM   #40
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Quote:
Originally posted by Jon Fuller
Has anyone here that's arguing for the gently, gently approach considered the possibility, that the various, experienced race drivers that have driven this boat may have tried it already?

It needs different props, end of.
Well, all these experienced drivers haven't done very well in rectifying the problem so far .. this boat been on the scene 20 years?

I wasn't saying it didn't need different props, I was just saying I thought the gently gently approach might be more successful than the cowboy approach ...
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