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Old 27 October 2005, 12:17   #31
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Quote:
Originally Posted by Alan
Ah, silly me, I'm confusing experience in yer know actual ribbing with received wisdom from watching video's.
Not a football ref are you? They tend to favour their experience over video footage as well.........
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Old 27 October 2005, 18:25   #32
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Quote:
Originally Posted by codprawn
Was that from personal experience???

I have looked hard on the net but can't find any complaints - maybe the Yanks just don't use them as hard???

Where did it break and which jackplate was it???
It was a CMC, but we've broken a couple of different types of "bolt in a slot" types of lifter - just don't stand up to the punishment racing gives it - they last 1 or 2 races at best - listen to Dirk - he knows what he's talking about and coming from a leisure perspective as well.

As for the pitchpoling - rubbish - that video is of a badly balanced boat running in big swells - for a start trim tabs would help with that, or a bow tank would also make it better balanced.

I'm sure I have mentioned quite a bit about lifters in the past both here and on Boatmad (I see you've joined there as well) - do a search and you'll see my comments.
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Originally Posted by Zippy
When a boat looks that good who needs tubes!!!
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Old 27 October 2005, 23:00   #33
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Quote:
Originally Posted by Cookee
It was a CMC, but we've broken a couple of different types of "bolt in a slot" types of lifter - just don't stand up to the punishment racing gives it - they last 1 or 2 races at best - listen to Dirk - he knows what he's talking about and coming from a leisure perspective as well.

As for the pitchpoling - rubbish - that video is of a badly balanced boat running in big swells - for a start trim tabs would help with that, or a bow tank would also make it better balanced.

I'm sure I have mentioned quite a bit about lifters in the past both here and on Boatmad (I see you've joined there as well) - do a search and you'll see my comments.
What is rubbish about what I have said about pitchpoling? Basically what I was saying is that a lot of RIBs are too tail heavy!!! Obviously racing ones aren't and neither is your boat - surely that would have something to do with the fact that you have considered the balance of the boat when you designed it?

As you say a bow ballast tank will make all the difference!!!
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Old 28 October 2005, 05:03   #34
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Quote:
Originally Posted by codprawn
What is rubbish about what I have said about pitchpoling? Basically what I was saying is that a lot of RIBs are too tail heavy!!!
What you said was "seems to me RIBs tend to pitchpole more than they capsize!!!", which is not the same as saying they are just too tail heavy (and could reasonably be described as rubbish).

Plenty of badly balanced RIBs land transom-down after getting a bit of air, however pitchpoling (turning over, end over end) is very rare.

John
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Old 28 October 2005, 05:51   #35
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Quote:
Originally Posted by John Kennett
Plenty of badly balanced RIBs land transom-down after getting a bit of air, however pitchpoling (turning over, end over end) is very rare.

John
Is going over backwards (blowover) considered a 'pitchpole'? I would have thought pitchpoling is more a case of going in nose first and the arse rising and overtaking the front in a natural 'turning wheel' movement.

??

wotd'ya reckon ya torl ungreatful fing?
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Old 28 October 2005, 06:26   #36
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Is going over backwards (blowover) considered a 'pitchpole'? I would have thought pitchpoling is more a case of going in nose first and the arse rising and overtaking the front in a natural 'turning wheel' movement.

??

wotd'ya reckon ya torl ungreatful fing?

In dinghy sailing that's what we'd call a pitchpole, most common in catamarans, and asymetric spinnaker boats going through waves. There's a great photo somewhere of the Silk Cut Yacht pitchpoling at cowes week.

I've only ever heard of going over backwards being called a blowover - that's what hapeened to the whitstable lifeboat someone mentioned previously.
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Old 28 October 2005, 06:31   #37
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Heres a pitch pole:

http://www.mini12.ca/mini12/public_h.../pitchpole.jpg

not a rib im afraid. I believe the Whitstable lifeboat was a blow over, or 'flipped'.

Alex
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Old 28 October 2005, 06:44   #38
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Heres a pitch pole:
..and I know the correct procedure for the crew to adopt in this situation......



....crap yerself.....
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Old 28 October 2005, 06:45   #39
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..and I know the correct procedure for the crew to adopt in this situation......



....crap yerself.....
I feel most sorry for the crew member who is down below using the heads
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Old 28 October 2005, 06:57   #40
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Quote:
Originally Posted by Jono
..and I know the correct procedure for the crew to adopt in this situation......



....crap yerself.....
It's worse at speed!!

http://media.boatmad.com/gallery/v/m...stuff.wmv.html

Although this starts as a stuff, the boat breaks in the middle, and folds up.
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