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A new class of dinghy?
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    Posted: 29 Sep 18 at 10:21am
I know I’m alone on this, but I would have liked the D Zero to be plastic, but still with the carbon rig. The hull is small enough that the weight gain wouldn’t be huge and it’s unstayed so you don’t need the torsional stiffness.
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Posts: 3011 		Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 11:04am
Originally posted by Peaky

I know I’m alone on this, but I would have liked the D Zero to be plastic, but still with the carbon rig. The hull is small enough that the weight gain wouldn’t be huge and it’s unstayed so you don’t need the torsional stiffness.

And then you'd have bought one?

The requirement for torsion stiffness is not much changed by an unstayed rig. The mast is still creating a moment one way while the helm weight and lateral resistance oppose it.

Add a few kilos to the Dzero and it just sinks into the swamp of single handers which their various. promoters tell us are 'a bit better than a Laser'.
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 11:46am
Well, I guess one thing this thread suggests is that there are no obvious market niches for a new class of dinghy!

TBH, if one felt the need for a more modern no spinnaker adults two hander, one could do a lot worse than the RS400 anyway. It has Morrison's typical low wetted area, its good at displacement speds, its roll tacky, and has a pretty generous fore and aft sail area. Just needs a dangly pole, and the spinnaker halyard system would provide pretty much all the gear needed for that.
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Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 12:56pm
I'm just pleased to see the new version of the 1960's Skimmer style boats coming out from Fusion boats, the Maverick.

Looks like great fun.
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Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 1:00pm
As for SUP v SOT, I'll go for SUP every time. No more wet bum. In fact, so long as you dont mess around, staying dry is pretty easy, so no need for special clothes at all. Or, dare I say it, a BA. After all, you are joined to a big floaty thing.

Edited by Rupert - 29 Sep 18 at 1:00pm
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 1:26pm
Originally posted by RS400atC


Originally posted by Peaky

I know I’m alone on this, but I would have liked the D Zero to be plastic, but still with the carbon rig. The hull is small enough that the weight gain wouldn’t be huge and it’s unstayed so you don’t need the torsional stiffness.
And then you'd have bought one?
The requirement for torsion stiffness is not much changed by an unstayed rig. The mast is still creating a moment one way while the helm weight and lateral resistance oppose it.
Add a few kilos to the Dzero and it just sinks into the swamp of single handers which their various. promoters tell us are 'a bit better than a Laser'.

Dan’s a good designer and a good friend, so I did buy one and yes I would likely still have bought one if it was plastic.
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Posts: 997 		Post Options Post Options   Quote Daniel Holman Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 2:29pm
Originally posted by RS400atC

Originally posted by Peaky

I know I’m alone on this, but I would have liked the D Zero to be plastic, but still with the carbon rig. The hull is small enough that the weight gain wouldn’t be huge and it’s unstayed so you don’t need the torsional stiffness.

And then you'd have bought one?

The requirement for torsion stiffness is not much changed by an unstayed rig. The mast is still creating a moment one way while the helm weight and lateral resistance oppose it.

Add a few kilos to the Dzero and it just sinks into the swamp of single handers which their various. promoters tell us are 'a bit better than a Laser'.
If rotomould it would be half the price basically. And I would venture still quicker than laser and nicer to sail.
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 2:37pm
Originally posted by RS400atC

The requirement for torsion stiffness is not much changed by an unstayed rig. The mast is still creating a moment one way while the helm weight and lateral resistance oppose it.

I'd say the requirement for torsional stiffness is significantly greater with an unstayed rig given that there is no shroud supporting the weight of the crew on the side deck?
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Posts: 997 		Post Options Post Options   Quote Daniel Holman Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 2:59pm
Originally posted by Sam.Spoons

Originally posted by RS400atC

The requirement for torsion stiffness is not much changed by an unstayed rig. The mast is still creating a moment one way while the helm weight and lateral resistance oppose it.

I'd say the requirement for torsional stiffness is significantly greater with an unstayed rig given that there is no shroud supporting the weight of the crew on the side deck?
Nope in a boat where you don't need to hold jib luff tension, torsion gives dynamic response, so all things being equal you can have a stiffer mast without the boat being "staggery."
Its a big variable in olympic finn and other unstayed boats. They even tune it to sailors.
Its still bloody rigid in torsion its such a big diameter, but can be tuned.
Dan
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 18 at 3:23pm
I'm well aware of tuning the mast to he sailor having sailed an OK for much of my teens (wooden mast back then too). But do you mean they tune the hull stiffness as well?
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