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Old 23 November 2007, 05:34   #31
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Originally Posted by Lordy View Post
Also very pleased to hear you can make it around to Dartmouth. We all like the beach at Blackpool Sands, so sounds like we'd be able to motor around there in a boat. How long does that sort of journey take?
From memory Dartmouth was about an hour on smooth water early in the morning and much longer coming back when choppier - although we tend to investigate beaches/ coves on the way rather than just hammering round.
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Old 23 November 2007, 07:37   #32
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Thanks again BA.

Another quick question, to all I suppose.

With a 50hp outboard, I assume your Zodiac has a jockey console?

Not quite sure why, but I prefer the idea of tiller steer. What's the maximum safest size outboard you could tiller steer with? And could you pull water-skiers from a tiller-steered boat?

Thanks.
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Old 23 November 2007, 09:22   #33
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Finally found a picture of the speed tubes : http://www.zodiacmarine.com/img/cach...HD-pic-310.jpg

We have this sort of bench seating : http://www.zodiacmarine.com/uk/the-z....cfm?id=futura (picture 7 of 8). Not as good as jockey seats (for absorbing bumps) but a good feeling of safety sitting between the tubes. You might just squeeze a 4 in a line jokey seat plus console in a 4.2m Futura, but it might affect the balance - I have never seen one.

Unless you are going to add steering dampers (as used on Zapcats) and have arms like Popeye, I'm not sure you would want tiller steer on a 50hp (or probably anything over 30hp). I find that if solo, I need to be fairly well forward in the boat to balance the weight of engine and fuel at the back (my only regret is that the outboard trim is manual).

I suspect that you would struggle under 50hp to comfortably pull a loaded boat (2 adults and a couple of children) plus an adult water skier - hordes of friends and children usually appear when you menition waterskiing ...
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Old 23 November 2007, 11:23   #34
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Just thought I would offer my opinion, as I have a 4.3m SIB with aluminium floor.

Like you I had a preference for tiller steering, mainly to keep as much usable free space as possible within the boat. As I wanted to get decent performance I opted for a 30hp 2 stroke, which is the maximum that the boat can take. I certainly would not want to use anything over 30hp without console steering though. It takes a lot of effort to hold the boat straight at speed (I previously had a 20hp and the difference is VERY noticeable) and I find myself having to slow down frequently to rest my arm. I am sure the boat/motor combination would be capable of pulling a skier but I have not tried it. I expect it would be even more tiring trying to hold the boat straight with a skier on the back.

I guess it's a trade off that only you can make the decision on. Have tiller steer and keep the boat open for passengers and gear... Or go for some sort of steering rig to make handling the boat at speed that much easier.
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Old 23 November 2007, 11:50   #35
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Just thought I would offer my opinion, as I have a 4.3m SIB with aluminium floor.

Like you I had a preference for tiller steering, mainly to keep as much usable free space as possible within the boat. As I wanted to get decent performance I opted for a 30hp 2 stroke, which is the maximum that the boat can take. I certainly would not want to use anything over 30hp without console steering though. It takes a lot of effort to hold the boat straight at speed (I previously had a 20hp and the difference is VERY noticeable) and I find myself having to slow down frequently to rest my arm. I am sure the boat/motor combination would be capable of pulling a skier but I have not tried it. I expect it would be even more tiring trying to hold the boat straight with a skier on the back.

I guess it's a trade off that only you can make the decision on. Have tiller steer and keep the boat open for passengers and gear... Or go for some sort of steering rig to make handling the boat at speed that much easier.
Thanks TrickDog

The tiller steering preference was also driven by having a family of 5, which can generate paraphernalia to take on board like nobody's business!!

When you say there is a noticeable difference between 20 and 30hp, is that in speed as well as manageability?

What seems to be slowly dawning on me is that I need 2 boats!! A smaller/less powerful one that I can tiller steer, for messing around in the estuary, dropping the family off at the beach and maybe pulling the odd inflatable.

And a bigger, jockey style inflatable to go a bit further afield along the coastline to other beaches, when it's not too choppy.

Decisions, decisions!!!
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Old 23 November 2007, 11:57   #36
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Unless you are going to add steering dampers (as used on Zapcats) and have arms like Popeye, I'm not sure you would want tiller steer on a 50hp (or probably anything over 30hp)...

...I suspect that you would struggle under 50hp to comfortably pull a loaded boat (2 adults and a couple of children) plus an adult water skier - hordes of friends and children usually appear when you menition waterskiing ...
Thanks BA - my arms are more like Olive Oyl's, and from Trickdog's observations just now, it'll have to be a 30 or less.

So, that rules out water-skiing - which only I can do anyway - but hopefully would be enough to pull an inflateable?

As I'm veering towards perhaps a 3.8m, maybe I'll just have to drop the majority of the family off at a beach and take them out one at a time on the towable?

Thanks again BA!
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Old 23 November 2007, 12:15   #37
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What seems to be slowly dawning on me is that I need 2 boats!! A smaller/less powerful one that I can tiller steer, for messing around in the estuary, dropping the family off at the beach and maybe pulling the odd inflatable.
And a bigger, jockey style inflatable to go a bit further afield along the coastline to other beaches, when it's not too choppy.
Why not a mid-sized inflatable with a small jockey console?

BTW You will find the 3.8 goes nicely with a 20. I can dig some figures out for you if you like?
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Old 23 November 2007, 12:23   #38
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Lordy

I expect that a 20 or 25hp would be OK on a 3.8m SIB. The big difference I noticed with the 20hp was some difficulty getting the boat onto the plane when carrying a lot of weight (by that I mean 4 or 5 people... There was no problem with only 2 on board). With the 30hp the boat planes very easily even when carrying 6 people. I am definitely getting more speed out of the 30hp also but, as I mentioned, it takes some effort keeping the boat straight at full throttle.

I think the 30hp tiller steer was a good compromise. There is plenty of space for carrying people and gear to the beach, but also enough power to do some decent exploring trips around the coast. I am happy to lose a little manageability for all the extra space in the boat that tiller steering provides. And I still take the boat out on some long runs in fairly choppy conditions. A SIB jumps over waves rather than cutting through them, so you get shaken about a bit in rough water, but that would happen whether you had tiller steering or a console.
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Old 23 November 2007, 12:47   #39
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By the way...

My boat came in two big holdalls. One containing the boat and the other the aluminium floor panels. The holdall for the floor panels is oblong shaped, exactly the same width as the boat floor, nearly 2m long and about 15cm deep. I had a piece of fairly dense foam cut to the same size which, zipped inside the holdall, makes a great mattress for sitting on in the bottom of the boat. Great fun tearing along through waves with so much cushioning under your passengers! And much safer than sitting on the tubes.
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Old 23 November 2007, 20:44   #40
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For a given outboard power and a given SIB length, an inflatable 'v' keel will require more 'strongarming' of the tiller to keep it tracking straight than a futura hull. A straight catamaran hull will require less still. If you are wondering about the differences in these hull designs, there is an expalanation of them here; Small rib vs large SIB . Also, when comparing different lengths of SIBs that have the same general hull design, the shorter the hull, the more effort you will have to put into the tiller to keep going straight.

For example, when I put my 40 hp outboard on my 4.2m zodiac SIB with an inflatable 'v' keel (which is it's max hp rating), it requires alot more effort to keep it straight than when that same outboard is on my 4.7 m Gemini with the catamaran hull (see picture below). This is because of both the difference hull length and the difference in hull design. With the 40 hp outboard on the Gemini, it takes minimal effort on the tiller to keep it going straight while on calm water, and moderate - substantial effort when going thorough strong or whirlpoooling currents such as below.
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