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Old 27 January 2007, 14:27   #31
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That's why I suggested putting them on a low GRP pod.

John
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Old 27 January 2007, 14:42   #32
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I was making an observation on the video.
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Old 27 January 2007, 14:46   #33
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I know what you mean, I particularly don't like the way it seems to hang off the back of the pedestal. It looks like it's trying to rip it out of the deck!

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Old 27 January 2007, 14:52   #34
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I think TD was involved in a project a little while back. Something to do with the MOD prescribing max G's over a given time period that soldiers can endure, so IIRC they were looking at making the whole cockpit being mounted on suspension.
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Old 27 January 2007, 16:32   #35
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One comment I would make on the video is the limited amount of travel and the ease with which the seats move. If it's the case that they are adjustable for stiffness and they have been set soft for the purpose of demonstrating their action then when stiffened up that will begin to negate their effectiveness. However, anything is better than nothing.

To give a little indication of the forces, the last time I was out was with a pal. We were travelling home flat out into a head sea with the tabs right down and his comment to me was, "The seats are great but I can feel me internal organs bumping against the inside of my body.".
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Old 27 January 2007, 17:09   #36
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So how much movement should a seat have? 200mm?

Just an Idea to keep things simple:

Two 2" stainless tubes mounted on the deck protuding to a height of 300mm and sloping towards the stern at an angle of 30 degrees from vertical.

A damper and spring assembly mounted in each tube with a compression of said movement. Removable for setting different damper settings and for maintenance purposes.

Over these tubes with suspention assemblies mounted in go the seat. Basicly a U shape tube that sits over the deck mounted tubes. Inside this U shaped tube are some nylon bushes and a way of locking it in position. Welded onto the U shape tube at an angle of 30 degrees is the seat tubes.

For the tech's out there, would this work? Or would it be too harsh a ride?

Seems like a simple solution and would keep most of the elements out the workings.
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Old 27 January 2007, 17:13   #37
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It looks like the seat in the vid is undamped. I was thinking (in a geeky sorta way) it would be quite funny if the boat started bouncing along at the harmonic frequency of the seat.
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Old 27 January 2007, 17:45   #38
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I'm gonna go and mount suspension seats in my next RIB.

I'm going down Toys R Us and purchasing two space hoppers, they even come with safety grab handles and can be used as inflatables.
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Old 27 January 2007, 18:13   #39
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Quote:
Originally Posted by Hightower View Post
I'm gonna go and mount suspension seats in my next RIB.

I'm going down Toys R Us and purchasing two space hoppers, they even come with safety grab handles and can be used as inflatables.
hi andy
sorry i didnt get time to mess with my tractor today. had to ride a horse.
its my job. i will try again tomorrow but trust me its the same seat.
it has an adjustable damper and about 8 inches of forward/backward movement wish i had kept the box.
i have found the invoice and it was closer to 60 quid and it didnt fall off any lorrys.
and it stands up very well to the weather (no cab on that tractor) after 5 years use it looks the same as th day i put it on
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Old 27 January 2007, 18:19   #40
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Could the suspension seat be gARF's latest incarnation of the rib flikka?
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