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Old 28 September 2005, 06:06   #61
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Could be a very lucrative contract asuming the the tall one only takes a small cut for using his forum for biz
I bought him a pint of Guiness at LBS in January. Do you think that would be enough?
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Old 28 September 2005, 06:09   #62
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Quote:
Originally Posted by Pete7
Hmm, just thought, water pressure going to be quite high and would push against cables. Not sure if it would work with cables in compression as tabs might move up......
Could all be done with pivots and levers the nice thing is that you only need 35mm movement at the wedge (for Volvos’ system) and it wouldn’t be unreasonable to have 350 mm of movement with a lever so straight away you got a 10 to 1 advantage. Additionally you could get the cables to pull the wedges into work which would make them more capable.

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....Fancy going halves:.....
Healthy price
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Slues gate ? is that like a vice ?
Spelling let me down again what are those lock gate holes with a uppy downy doors Des
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Old 28 September 2005, 06:14   #63
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You mean sluces. Your only going to get half a turn so the thread would have to move 35mm in half a turn, thats quite a steep thread, like a wooden cork screw removing thingy.

Where are all those honourably graduated students when you need one to work out the dynamic water pressure at 25 knots

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Healthy price
ah but you only need two so we could go halves.
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Old 28 September 2005, 06:26   #64
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....Your only going to get half a turn so the thread would have to move 35mm in half a turn, thats quite a steep thread, like a wooden cork screw removing thingy.,.........
Maybe that is the answer instead of a lever you use a turn wheel 5mm wedge movement per turn. 7 turns for full wedge would be a coarse thread though Beginning to see why Volvo use electrics. Des
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Old 28 September 2005, 06:41   #65
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If it says that they are effective up to 50mph, has anyone any idea what they would be like on a 60 - 70 mph stepped hull RIB? Thought about fitting trim tabs to the race boat, but they are heavy and bulky - these seem neater and more compact - maybe lighter as well?
How about 2 of them on each side of the hull. If you could calm the turbulence behind them, that'll save you making steps.




-------------

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Originally Posted by pete7
but still think the water pressure might over come the friction of the cable and lever. However that would mean they automtically raise at a given pressure, say planning speed.
Because the transom is angled, you might find there is a tendency for them to pull out once they catch the water.
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Old 28 September 2005, 06:42   #66
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Come on guys. You are not going to need that much pressure to actuate the blade. It is going up and down across the flow. The major resistive force is going to be the one trying to jam the blade in its guides and drag the whole shooting match off the transom.

err...........I think.
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Old 28 September 2005, 06:51   #67
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How about 2 of them on each side of the hull. If you could calm the turbulence behind them, that'll save you making steps.
Sounds like a hydrafoil, that would make Cookee popular on the race circuit
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Old 28 September 2005, 07:02   #68
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You could use a simple cam arangement.


Plan A concept............
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Old 28 September 2005, 07:32   #69
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The blurb from Volvo has just arrived in the post and it is no more informative than the stuff on the net
Having said that, it does have a price list a 300mm interceptor is £58 and a cable is £15 so for £75 and a 3 way switch from the shed I could get level the whole kit is £275

Des
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Old 28 September 2005, 07:39   #70
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But i think you may need the 450mm Interceptor based on weight/length?
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