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tick View Drop Down
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Post Options Post Options   Quote tick Quote  Post ReplyReply Direct Link To This Post Topic: Fireball Questions
    Posted: 23 May 13 at 11:22am
I think I see now. kick out that flat panel that forms the bow and poke out the swinging pole. Punch through the foredeck further back for the chute. Lots of engineering.....probably better off with a composite boat then. Rip off the w**den foredeck for installation. A lot of water would come in though......Fireball has tanks front and rear, where would it go?
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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 11:42am
Under the bow would be far too low- it would be a pain to seal, and if it wasn't sealed it would gulp water (especially upwind)
-_
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oldarnus View Drop Down
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Post Options Post Options   Quote oldarnus Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 12:00pm
Originally posted by iGRF


The reason for this, we find ourselves my new crew and I, too short and too light for the jolly old Alto of joy, have no interest whatsoever in revisiting the RS500, especially having heard it's history, but want a single trap assym with centreboard which of course there are none.
 

So you have been getting rather wet recently, and not just from the rain!
Firstly, perhaps you are expecting a bit much since yes you are clearly on the light side, but  as easy as the AltO is to sail, a new team and a crew who is new to trapezing do need some practice, and you elready expect to be winning.

My observation from knowing you and reading this thread would be:-
Firstly don't go from the frying pan and into the fire. i.e. by going through a similar experience as you did with the V Twin. I remember when you visited the AltO stand, just five minutes after the Dinghy Show opened in 2008, you asked for a new boat immediately. I said delivery would be two or the months. Your reply was that you were sixty and did not intend waisting another year  of your life wating for one.. You insisted  on buying the prototype stand boat. Graeme you are now five years older!
 I'm not suggesting you stick with the AltO if it does not suit your your new team, but as RS400 says you will hardly be allowed to win races with a new toy and an favourable PY.

Next chapter will comment further, but I will send this before the reply capsizes.

You don't give up when you know you have a winner!
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Post Options Post Options   Quote oldarnus Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 12:43pm
Originally posted by GybeFunny

What about getting some smaller sails for the Alto made? Or is that too simple an idea? You may even find that a mainsail from another boat will fit.


So to continue:-

The capsize you referred to was when close hauled. Additional crew weight/ leaverage, and /or smaller sails might not have prevented it. It sounds more like slow reaction and cleats not released. Do you have the original main sheet cleat. Does it need replacing. Until recently you have always used the prototype large mainsail at about 12M2, though you were using the standard 11m2 on this occasion. I recall you saying the class mainsail was too small, and thus used the non class big one.
You have recently purchased the class kite which is 17m2. Why not revert to your old on which is 16m2, though I guess it needs replacing after 5 years.

The PY you use at your club for the large mainsail I recall is 915. For the standard main, 925 is used. What are you using?.

Yes, you are on the light side, and shortish. I'm not much taller than you and no doubt the same weigh at about 67Kg, oh and 9 years older and don't sit out. Geoff my crew is tallish at 6ft 2in and 75 kg, but a youngster at about mid fifties. How does this compare with you?

What sort of wind strength gives you problems? Obviously you also can have roughish seas at Hythe so a couple more stones can be useful in these condition.. About a quarter of AltOs have female crews and mostly sail in estuaries. There is also one all female boat in which the crew is eight stone, about 5ft 3in and dare I say middle aged!I

To continue



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RS400atC View Drop Down
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Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 1:00pm
1 sq metre is not a big change in sail area, percentage wise.
OK that extra area may be high up, and contribute more to heeling moment, but if it's in the form of roach, it should have reasonable gust response?
I don't think shrinking the sails by a few percent would change much, unless it chages the whole character of the rig?
 
Having had a very pleasant sail on an 800 last night, my view that twin wires is the natural way to go for decent size courses is reinforced.
It's unfortunate that there is no obvious pivoting board boat, as where I mostly sail is not only shallow at the edges, but also at poorly defined places in the middle.
I don't think it would be hard to convert a B14, RS800 or whatever to lifting board, several people have started the conversion by the simple process of running aground at speed....
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 1:23pm
Originally posted by tick

Punch through the foredeck further back for the chute. Lots of engineering


I'd better not say this is what I'd do, because the chances of that approximate to zero. But given this dubious requirement I suggest you consider taking the foredeck off and putting in a "false floor" so that there's a low bow tank under all the gubbins. Might be possible to juggle things so that the pole comes through the deck alongside or just in front of the forestay to reduce water ingress. I believe some of the US scows play that game. Maybe remove everything in front of the forestay to make room for the crazy gubbins and put a cloth cover over to reduce water ingress,and just replace the deck aft of the forestay.

Come to think of it, if you're going to rip the foredeck off anyway it might be worth raising the centreline considerably to make room for the gear, terminating the centrebeam in some *very* serious structure that lifts the jib tack up about three inches. With some juggling of the cross section of the deck you could probably raise the jib quite a bit without losing and end plate effect or changing the gunwhales. The extreme would be a flat topped deck with "chines" - as below so above!

Early Meatballs, BTW, had the jib on a short strop, they only brought them down to deck level to gain the end plate effect later.

Edited by JimC - 23 May 13 at 3:04pm
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oldarnus View Drop Down
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Post Options Post Options   Quote oldarnus Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 2:58pm
Originally posted by RS400atC

1 sq metre is not a big change in sail area, percentage wise.
OK that extra area may be high up, and contribute more to heeling moment, but if it's in the form of roach, it should have reasonable gust response?
I don't think shrinking the sails by a few percent would change much, unless it chages the whole character of the rig?
..

The AltO main is 11m2. Perhaps the prototype sail was 12.5  with the square head batten twice the length, thus it was at the head and not on the roach. GRF does not say if his capsizing problem is across the board or on the beat.  The AltO is a very forgiving boat and designed to minimise capsizing potential. I suggest the problem is practice and boat gear. Regarding not winning, I'm sure his competitors in other classes have views on this. The AltO is a very rewarding boat to sail and performs well across all conditions, but if always winning  is essential to enjoying your racing then you at least should start with a bandit class which the AltO isn't.

Re. the filling up to the gunwales after capsize, Gybefunny explained it well. Best is that one goes in the water then, on righting, it will only be a third full or so. The advantage of this is that it is not going to blow away and unlikely to turn turtle.  You are expecting a bit much if it is to drain quickly with the flaps shut. Minimising causes of capsize have been built into the design of the boat, thus not double bottomed. You don't deserve to win a  race if you capsize.
You don't give up when you know you have a winner!
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RS400atC View Drop Down
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Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 3:52pm
My old fashioned definition of 'roach' is anything outside a straight line from head to clew, so includes the bit high up on a long top batten.
If you want to win meaningfully, don't buy a bandit class, buy the same as the other buggers and sail better than them.
Easier advice to give than follow, but it's good when it works.
 
Capsizing doesn't tend to win races, but recovering reasonably quickly and finishing mid fleet can win you a series.
 
It can be amusing to watch Merlins fall over, virtually sink, right and get going again.
It often does look a lot quicker than turtling a 400. 
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getafix View Drop Down
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Post Options Post Options   Quote getafix Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 13 at 5:04pm
GRF, don't poke holes in a nice boat or faff about with an assy kite on a FB, use the one the good lord intended and thousands of others have tried to, or actually mastered.. it's fun and bl**dy quick when you get it right and it's honking...... 

......crosses fingers and hopes GRF gets frightened off on behalf of all other FB sailors
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Noah View Drop Down
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Post Options Post Options   Quote Noah Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 13 at 12:10am
Originally posted by getafix

GRF, don't poke holes in a nice boat or faff about with an assy kite on a FB, use the one the good lord intended and thousands of others have tried to, or actually mastered.. it's fun and bl**dy quick when you get it right and it's honking...... 
......crosses fingers and hopes GRF gets frightened off on behalf of all other FB sailors


With many thanks from a furball sailor :-)
Nick
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