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Could a UK Cherub be a 12'Skiff?

Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=1609
Printed Date: 15 Aug 25 at 8:16am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: Could a UK Cherub be a 12'Skiff?
Posted By: Granite
Subject: Could a UK Cherub be a 12'Skiff?
Date Posted: 31 Mar 06 at 6:48pm
Originally posted by Isis

Originally posted by Granite


Are you sure Aqua will measure as a 12foot skiff Andy?


Most 12s wont measure as cherubs without mods but ive never seen anything which will stop a cherub measuring as a 12


Just moving the debate to a new topic.

The problem I see with UK Cherubs being modified to sail as 12' Skiffs are

Hydrofoils, Racked wings, Depth of hull to boyancy, and Snout shape.

is this a problem or could you just write your own UK 12' Skiff rules?


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If it doesn't break it's too heavy; if it does it wasn't built right



Replies:
Posted By: Isis
Date Posted: 31 Mar 06 at 7:02pm
I think there are slight differences between the nz and aus 12 rules so I geuss you could make a UK 12 set but officially....

T-foils are allowed in cherubs, and not in 12s...but this is pretty painless to swap between

Racks... Nothing ive seen stops 12s running racked wings but their current designs just dont suit them

Difference between false floor and gunwhale height: could present issues... some of the racked boats have pretty low gunwhales, but then for this purpose could you argue the rack represents the gunwhale?

Bouyancy... some issues again but realisticaly if a boat fits cherub bouyancy rules, I doubt anyone would have a problem with it not 'quite' fitting 12 bouyancy regs

Snout shape... there might be something banning bouyant snouts in 12s? not sure....

On the whole though... cherubs have an open invitation to compete in 12 events anyway so despite a few little blurry bits I dont think there would be a problem


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Posted By: Dead Air
Date Posted: 31 Mar 06 at 7:39pm
Am I right in thinking the NZ 12' skiffs just changes their rigs (and possibly the bow sprit) Then go racing as R class dinghys?


Posted By: Prince Buster
Date Posted: 31 Mar 06 at 8:11pm
i think R classes are 13ft so i don't think so

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international moth - "what what?"


Posted By: JimC
Date Posted: 31 Mar 06 at 8:24pm
Originally posted by Dead Air

Am I right in thinking the NZ 12' skiffs ... go racing as R class dinghys?


Yes. The 7 inches or so of length doesn't seem to make as much difference as you might think.


Posted By: Granite
Date Posted: 31 Mar 06 at 10:10pm
Looking again the NSW rules would not like the snout on most UK boats

(i) integrated bow structures that may extend the ‘out of water’ length by 700mm. The structure can extend below the top edge of the gunwale 100mm with a width of 370mm. Web members may extend below this to within 100mm height of the forefoot with maximum total cross-sectional dimensions of 80mm by 15mm width. (see fig 2).

They do not seem to like side tanks

(iii) The Vertical distance between the top edge of the gunwales and the top of any buoyancy compartment must be greater than 300mm between the front edge of the centreboard case and 700mm forward of the transom measured on the centreline.


NZL rules would not like the snouts on most UK Cherubs

b) Bow and Extensions: A bowsprit and a device to support such bowsprit are allowed. Neither shall extend more than 700mm beyond the stem. Any device to support the bowsprit shall not exceed cross-sectional dimensions of 13mm transversely, by 80mm. The support device may be attached to the stem by any means, and must fit within a triangle shape from between the sheer line and 100mm above the bottom of the stem to the end of the bowsprit.

and possibly the racks depending on definition.

e) Hull: All skiffs shall be of a single hull construction. Any extensions or devices that increase righting moment (eg. floats or outriggers) are prohibited

But there are enough differences between each of them that you could eisily write a set of rules for UK 12' skiffs  that would allow UK Cherubs to be sail without to much difficulty. You could even allow T-foils if you wanted.




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If it doesn't break it's too heavy; if it does it wasn't built right


Posted By: redback
Date Posted: 31 Mar 06 at 11:27pm
I admire you Cherub guys so don't take this wrong but why?


Posted By: BBSCFaithfull
Date Posted: 31 Mar 06 at 11:28pm
Because they've run out of things to fiddle with on their boats  So hence making new ones

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Posted By: Dead Air
Date Posted: 31 Mar 06 at 11:53pm

So who is going have the first cherub with a temple vang?

 

Attached Image

 

photo taken from http://s10.invisionfree.com/12ft_skiffs/index.php?showtopic=107 - Here



Posted By: Isis
Date Posted: 01 Apr 06 at 12:03am
Originally posted by redback

I admire you Cherub guys so don't take this wrong but why?


the two boats are intrinsicaly very similar and there is one cherub already running a 12 rig, and another currently being converted and well as a 'real' 12 being imported from down under so it seems like a very relavant topic to me...


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Posted By: Isis
Date Posted: 01 Apr 06 at 12:05am
Temple vang: Hopefully me! Mr Strawberry might get there first though so we'll see...

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Posted By: Dead Air
Date Posted: 01 Apr 06 at 12:07am
got any spare boom sections lying around then?


Posted By: Isis
Date Posted: 01 Apr 06 at 12:11am
Im probably building from scratch but sourcing an old bit of mast section to base it on is also possible if one happens to turn up in the next couple of weeks


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Posted By: Dead Air
Date Posted: 01 Apr 06 at 12:40am

Originally posted by Isis

... if one happens to turn up in the next couple of weeks

 

Know someone planning to bust their mast?



Posted By: Isis
Date Posted: 01 Apr 06 at 12:42am
Ive heard broken smod masts are easily available 

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Posted By: Dead Air
Date Posted: 01 Apr 06 at 12:46am
but carbon ones? oh yeah, 800`s


Posted By: JimC
Date Posted: 01 Apr 06 at 10:10am
Any class is going to break the odd stick: its just a question of keeping your eyes open. I've recycle Finn, Laser EPS, Megabyte and Cherub masts for uses that weren't plannned. When I could find a Boss mast I'll be building a nice lightweight launching trolley.


Posted By: Skiffe
Date Posted: 03 Apr 06 at 2:26pm

Originally posted by Isis

well as a 'real' 12 being imported from down under

We keep hearing stories about this, which boat are you buying/bought?

As for side tanks, NO they don't comply, see the cutouts in the gunwales

 



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12footers. The Only Way to FLY

Remember Professionals built the titanic, Amateurs built the ark.


Posted By: Skiffe
Date Posted: 03 Apr 06 at 2:42pm

Originally posted by Isis

Racks... Nothing ive seen stops 12s running racked wings but their current designs just dont suit them

Difference between false floor and gunwhale height: could present issues... some of the racked boats have pretty low gunwhales, but then for this purpose could you argue the rack represents the gunwhale?

The way around this would be solid "wings"

Attached Image

Attached Image

 

 

Originally posted by Isis

T-foils are allowed in cherubs, and not in 12s...but this is pretty painless to swap between

T-foils are NOT allowed. It has been kicked around a bit, however its thought it would obselete the whole fleet overnight like the I14



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12footers. The Only Way to FLY

Remember Professionals built the titanic, Amateurs built the ark.


Posted By: Skiffe
Date Posted: 03 Apr 06 at 3:09pm

Originally posted by Isis

Snout shape... there might be something banning bouyant snouts in 12s? not sure....

Bouyant bows, mmm

Ginge won the Inters with this, note the cut outs which are covered from the inside with plastic

Up close



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12footers. The Only Way to FLY

Remember Professionals built the titanic, Amateurs built the ark.


Posted By: Isis
Date Posted: 03 Apr 06 at 3:10pm
Originally posted by Skiffe

Originally posted by Isis

Racks... Nothing ive seen stops 12s running racked wings but their current designs just dont suit them

Difference between false floor and gunwhale height: could present issues... some of the racked boats have pretty low gunwhales, but then for this purpose could you argue the rack represents the gunwhale?

The way around this would be solid "wings"

Attached Image

Attached Image

 

 


Very true... the problem is: the cherub In question already has tubular wings

As for the boat being imported: Im not sure which one... I know they guys who've bought her are Alan and Bob but thats about it. Andy_cherub will probibly be able to tell you more as I only spoke to them briefly. They are attacking the issue of getting a UK fleet started pretty hard though with rumors of big-name sponsors lined up for a circuit



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Posted By: JimC
Date Posted: 03 Apr 06 at 3:14pm
Easy to talk about big name sponsors. More difficult to get them to shell out the cash - ask Ms Edwards...



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