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blaze720 View Drop Down
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Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Topic: Cirrus Icon Development
    Posted: 04 Apr 10 at 8:56am
Dagger length and 'trained monkeys' ....

We will post a photo of NS dagger alongside a 'typical' centreboard for a 14' hull soon.  The point is that we are not aiming at ultimate performance within a liberal development rule set - we are offering very high performance within a SMOD package and 'easy' handling.  The NS foil is just over 1.5m long - inserting/raising it obviously is more difficult that raising a centreboard - irrespective of the depth related issues.  A conventional centreboard of Blaze / Phantom / MR length is less efficient but this is the compromise we accept.

Mike L.    
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Post Options Post Options   Quote Jamesd Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 10 at 6:52pm
Originally posted by RS400atC


The 400's tend not to fiddle with rake so much, not easily adjustable
on the water. Published settings are in a fairly small range too. Being
stepped on the hog and in a gate at deck level, adjustment is not so
effective as in a deck stepped merlin.


I'm not sure the 400 rig looks old fashioned, although the cloth used is
not this year's favourite. The Merlin sail shape is a product of a strange
formula for area, but both are pretty effective upwind. Will that
icon squaretop main be useable when it's done as many races as my
RS400 'club' main?


  I'm glad I'm not the only one still using an RS400 jib of the 'red boat
trademark' era!




How did it pan out upwind? My guess would be quite evenly matched
boatwise, possibly more to do with the sailors?



400 rigs are definitely rake sensitive. We fiddle with ours ALOT and im
sure most guys on the circuit probably do.
We rake through almost 100mm (4 inches) through the wind range, which
is about
as much as most other dinghies! Rules dont allow the shroud positions to
be changed during racing but we always do it between races, buy fast
pins for easy adjustment.



Edited by Jamesd
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blaze720 View Drop Down
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Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 10 at 11:34am
Want to try an ICON  ?? 

We are starting work on the 'plug' next week (you make production tooling from a plug).  It will incorporate a lot of changes and while it is still inspired by the NS14 it would certainly not measure as one as in production ICON will be both longer and wider plus carry further sailplan and spar changes.  New hull lines are being developed and the 'look' ... will be even more gorgeous.  And a few surprises are still to come.

Anyway hull 002 is now puely available for rig testing work while we do all the even more expensive stuff away from the water and will not be modified further.  It is the one in most of the photos, now has a centreboard and will give a strong flavour of the production version. 

A lucky few will have the chance to try it now as well - so if you are pondering over 'what next' and think the ICON approach might suit you get in touch and maybe get a hands-on preview yourself ....

Mike L. 
  
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Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 10 at 1:09pm
Originally posted by Jamesd

Originally posted by RS400atC


The 400's tend not to fiddle with rake so much, not easily adjustable
on the water. Published settings are in a fairly small range too. Being
stepped on the hog and in a gate at deck level, adjustment is not so
effective as in a deck stepped merlin.




400 rigs are definitely rake sensitive. We fiddle with ours ALOT and im
sure most guys on the circuit probably do.
We rake through almost 100mm (4 inches) through the wind range, which
is about
as much as most other dinghies! Rules dont allow the shroud positions to
be changed during racing but we always do it between races, buy fast
pins for easy adjustment.

The typical Merlin rig will have more like 100mm of shroud adjustment then 100mm of movement at the tip of the mast.

On the 400 I just drop the shrouds one hole if it's windy, but I have experimented with easing the jib halyard tension when its very windy and gusty. I reckon it's not as important as getting the shifts right, and probably less important than the deck level mast ram.

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Post Options Post Options   Quote Neptune Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 10 at 1:17pm
Mike, Will you have the icon on the water for the
Burghfield open day on May 1st?
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Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 10 at 3:26pm
Neptune

I think the club 'Open Day' is a week later on the 8th May - but if you are around on 1st we will be there anyway as I'm running a (Blaze) Halo 'training n tweeking' session so Icon 002 can easily be made available.  If you do mean the 8th then 002 can / will be available anyway.

Hope that helps ..... anyone want to try - sent me a private email.

Mike L.
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Post Options Post Options   Quote Doubleyou Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 10 at 10:30am
So whats happening here now?

Bill
Australian President
NS14 Association


Doubleyou
NS14
The Development Class
Canberra
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 10 at 8:08am

Hi Bill,

Mike (Blaze 720) can fill in more details, but in a nutshell prototype 001 is undergoing hull and deck improvements whilst 002 is being used to test and develop the rig.  This will continue over the summer with the first boats planned for September I think, although the very sad loss of Reg White may delay this.



Edited by Peaky
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blaze720 View Drop Down
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Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 10 at 3:02pm
As Peaky has prompted a responce .....

The NS input was/is very valuable and the eventual boat will still 'look' NS inspired.  However it will be based on a different design brief that results in a larger hull that is unrestricted by the NS rule set.  In short we could not produce what was needed without over compromising our plans if we had kept it near 'pure' NS.

We wanted a larger sailplan for the 'local' market and  we also wanted to incorporate a fair bit more volume in the hull - so bigger overall and with new lines throuighout is the order  In summary the ICON hull will be longer at approx 4.5m and wider at around 1.94m, with centreboard.  We will retain a vertical and very fine bow but we also end up with more wetted area with the new lines - but that is more than offest by the new rig.  The NS input is very important but we are incorporating many other 'good ideas' seen on classes as well.  After three months water testing  we do now appreciate why the Tasar development all those years ago was also quite a bit different to the NSs of that day.  

There will be quite a few real surprises to come ... not to be revealed for a while and for the detail on those everyone will just have to wait and see !

Cheers - Mike L. (aka Blaze720)
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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 10 at 3:19pm
Having sailed the Tasar a few times recently I have been reminded what a pain that mast spanner is; I'd defo go with a carbon pole over a rotating wing if I were you ...
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