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post #1 of 13 Old 11-26-2012 Thread Starter
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Lewmar Folding Wheel

I'm intent on going for a folding wheel. Whatever negatives there may be are for mine far outweighed by the positives. Cockpit access an obvious plus but also there is the ability to go for a slightly larger diameter wheel.

Now i've had a good look around but one question remains unanswered. How much space is required behind the wheel in order to fold the thing ?

Our current wheel is 900mm (36"), hoping to up that to 1000mm (40") .

Andrew B

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post #2 of 13 Old 11-26-2012 Thread Starter
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Re: Lewmar Folding Wheel

As per usual I'm realising that I didn't think this question through. Of course the answer can only be accurately determined by the height of the cockpit seat in relationship to the centre of the wheel.

Nonetheless presuming most helm seats are about the same height perhaps someone can give me an idea.

Andrew B

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post #3 of 13 Old 11-26-2012
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Re: Lewmar Folding Wheel

I happen to know that 40" wheels fit in the following boats with plenty of room to spare to fold.

CS 36T
Ericson 35-3
Caliber 40

They really do not take much room and I would be very surprised if you did not have enough room. I would guess that at the center-line you need about 8-10 inches of clearance. I am sure someone here with better geometry skills can calculate it based on the wheel diameter. The folding sides each fold in 1/4 of the wheel. Fit a box inside the diameter and then measure from teh side of the box to the arc of the wheel at center-line.

Also note that the wheel is slightly dished to accommodate the folding. This is good as with the wheel deployed it usually gives a little more room to walk around in "T" shaped cockpits. If you have a wind vane, you may have to slightly modify your setup.

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post #4 of 13 Old 11-26-2012
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Re: Lewmar Folding Wheel

Look at the hinge points.. they create two segments out of the wheel 'circle'.. draw a straight line through the rim hinges and spoke joints and scale it to the wheel diameter to be sure...

Ron

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post #5 of 13 Old 11-26-2012 Thread Starter
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Re: Lewmar Folding Wheel

Thanks people.

Treilly .... I think you are almost certainly correct. 99.99% so.

Fast I will check that.

but ... my error was in thinking the wheel max diameter of the wheel would be at seat level which it quite obviously isn't. As TR notes, with the wheel tapering away from max diameter as it falls I should have little or no problem even with a bigger wheel.

Wind vane will not be an issue with our setup.

This pic shows why I'm an idiot for worrying in the first place.



You'll notice if you look carefully that there is a vertical hatch/flap under the seat that drops down. This is to facilitate fitting and use of emergency tiller. In worse case scenario dropping this flap would enable the wheel to fold.

btw ... on another somewhat related note ... I saw in another thread on this topic quite a few suggestions re simply using the Edson quick release nut and removing wheel altogether. One couple we knew did this very thing but they also carried a tiny wheel they he then fitted in case of emergency. Looked odd in practice but seemed to work.

Andrew B

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Last edited by tdw; 11-26-2012 at 06:24 PM.
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post #6 of 13 Old 11-26-2012
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Re: Lewmar Folding Wheel

I have the 40" on our cs. At it's widest point in the middle of the folding section it's maybe 1'. Really opens the cockpit for stern access and folds very quickly. Also you will never be scrambling to put the wheel back on when you know what hits the fan.
Jim

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post #7 of 13 Old 11-26-2012
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Re: Lewmar Folding Wheel

I just measured my 40" wheel and it requires 10" clearance at the midpoint. Looking at your photo I would guess you need 6-7".

Tim R.
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post #8 of 13 Old 11-26-2012 Thread Starter
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Re: Lewmar Folding Wheel

Quote:
Originally Posted by jimrafford View Post
I have the 40" on our cs. At it's widest point in the middle of the folding section it's maybe 1'. Really opens the cockpit for stern access and folds very quickly. Also you will never be scrambling to put the wheel back on when you know what hits the fan.
Jim
Jim,
Not the folded thickness that concerned, rather the space required to swing the folding section. Nonetheless I'm pretty certain its sorted.

Andrew B

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post #9 of 13 Old 11-28-2012
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Re: Lewmar Folding Wheel

Another thought, if it was tight, and you were set on getting one, could you not turn the wheel so that the folding part is up, fold one side, rotate the wheel 180, and fold the other side, then turn the wheel another 90 to it's normal position? It seems it would only take an extra moment.

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post #10 of 13 Old 11-28-2012 Thread Starter
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Re: Lewmar Folding Wheel

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Originally Posted by treilley View Post
I just measured my 40" wheel and it requires 10" clearance at the midpoint. Looking at your photo I would guess you need 6-7".
Thanks for that .... Obviously not going to be a problem. The space is nowhere near that tight.

Ricthard .... good point really, that would seem a solution if space was really tight but in reality that space would need to be so tight that it would hard for anybody to actually stand behind the wheel.

Andrew B

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