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Old 28 August 2011, 12:38   #31
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Yes, that's exactly what I'd expect with the Quicksilver type air floor. It can be a bit off-putting but isn't likely to cause a crisis.

The other type of air deck where the floor itself forms the V of the hull is much more rigid.
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Old 28 August 2011, 13:49   #32
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Quote:
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My 340 airdeck floor really bucks up even at max pressure when going at full speed...still flexes...Im assuming its a common problem with the air floor?...can really feel the movement under me when planing across bay... others in same boat?
Weight distribution is the key to stopping this - mine does exactly the same if it isn't right - lots of previous topics on this (you get a sort of 'bubble' of air under the boat that moves back in waves). We found by gradually moving people or weight back slowly it disappears altogether.

Weight forward to get on plane then back to eliminate the flexing. Lovely once you have it sorted. Make sure air floor is to max pressure with a guage first.
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Old 28 August 2011, 14:52   #33
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solid floor, but only if it's alloy. Otherwise airdeck
Ok, new SIB has got wood floor. Was very easy to put in, stringers were easy too. I haven't had the chance to test it on the water, but I've been pleasantly surprised so far. I'm going to guess that an Alloy floor is lighter though and the wood adds a significant weight to the boat. Aero would be lighter still. Fully assembled it's slightly too heavy and awkard to handle but ones self. Wheels in the pipeline
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Old 30 August 2011, 07:28   #34
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Quote:
Originally Posted by Max... View Post
Weight distribution is the key to stopping this - mine does exactly the same if it isn't right - lots of previous topics on this (you get a sort of 'bubble' of air under the boat that moves back in waves). We found by gradually moving people or weight back slowly it disappears altogether.

Weight forward to get on plane then back to eliminate the flexing. Lovely once you have it sorted. Make sure air floor is to max pressure with a guage first.
Thanks mate... it was offputting at first...especially when the missus is in the boat ready to panic at anything possible...

I do check the air pressures every time before a trip out... I will try the weight forward then back trick...but think I may have to adjust my trim first.

All a bit more sensitive as I know I have a 20hp 2 stroke sitting on the 340.. ;-)
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Old 30 August 2011, 07:56   #35
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Just to clarify - ..."moving people back slowly..." - what I mean is the *first time* you try this move them slowly until you find the point where the flexing stops.
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Old 30 August 2011, 08:19   #36
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I'll get round to my proper report with some pics soon but I'm pleased to find my Zodiac 360 is pretty even tempered with regard to the air floor. Carrying a total of 40 stones (between 4 of us, not saying what the split is though!) plus kit it will pop on the plane easily with the 15hp Mariner. Moving weight about over the first few miles soon sorted the best distribution. The air floor doesn't suffer any humping that affects performance whatever the weight distribution (within reason). You do feel undulations at times that I liken to sliding over a whale's back but I expect that of an air floor.

When only two up the floor seems to be able to slide over the water even better with less distortion and performance is lively, even skittish,
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Old 31 August 2011, 05:15   #37
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BTW a page back Max said... "if you have the facility and are regurlarly not going far then leaving it inflated and transporting like that is so much easier/quicker"

Absolutely agree. It's all about your own way of using the boat. If I wanted the "hassle" of a trailer I'd have a GRP boat or RIB around 4m rigged with remotes but I want a boat to pack in the car to travel and tuck away packed in the shed/garage when not in use so it has to be an inflatable with tiller steer outboard.

When I decided on an air floor Zodiac I thought carrying the boat down river banks and beaches was crucial so the ultimate lightness seemed important and my engine was a 9.8 Tohatsu so that was easy to carry to the boat. But once I realised a 3.6m boat with 4 folks really needed a 15hp then carrying became a problem again so I went the transom wheel route and we now organise our trips around slipways which has worked really well.

So now transom wheels are in use the boat weight isn't quite so crucial and perhaps the need for an air floor isn't quite so great given that in new Zodiacs the cost is around an extra 300-400 for a 360 Fastroller over a 340S hard floor Cadet. The difference is nearer 150 with Honwaves though, don't know about other makes.
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Old 31 August 2011, 05:56   #38
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I was having a think this morning. Has anyone experience of fitting a solid floor when trying to deploy their SIB from a RIB. I guess Nasher will be the one to ask, but I think all his experience is with inflatable floors.
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