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Medway Maniac View Drop Down
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Topic: modified one designs
    Posted: 11 Jun 14 at 1:19pm
Originally posted by 2547

Well I guess they could continue to eat themselves to death but that will cost the tax payers ...

...pretty much the usual for end-of-life care, but they'll save on pension costs.
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Post Options Post Options   Quote 2547 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 1:12pm
Originally posted by gordon1277

Agree good point Chris and Jim but with 2547 point should the Phantom fleet seek sponsorship from a diabetes drug company or Pukka Pies?

No contest Pukka Pies


Well I guess they could continue to eat themselves to death but that will cost the tax payers ...
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Medway Maniac View Drop Down
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:53am
It's all-up weight (i.e. displacement) we’ re concerned with, Mike.

Edited by Medway Maniac - 11 Jun 14 at 12:53pm
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Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:42am
For the record ...

Halo is simply a regular Blaze with a larger sail (11.5 in place of 10.4m) and it is not heavier ..unless you count the extra weight of the full length battens !   The current version sits on the standard spars as well - either alloy or carbon. 

Seperately the comments about boat developed in Oz sound about right to me - they generally seem to  have lower rocker and are mostly lighter.  The Blaze is  also a very low rocker design and was not from Oz but Icons roots are nearly pure NS and it is therefore by UK design standards very low rocker as well.   Icon has excellent low wind performance as well but I suspect that is down to the suble detail underwater and not just the length / width.  The Blaze can be exceptional in breeze and at speed but  is more 'average' in the light stuff as is well known.      Low weight is usually an advantage if all else is equal ... but we can only rarely assume that of course. 

As for potential Halo helms ...  if you are on the heavy side maybe don't go on that promised diet until you have tried one !

Mike L.
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Post Options Post Options   Quote gordon1277 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:33am
Agree good point Chris and Jim but with 2547 point should the Phantom fleet seek sponsorship from a diabetes drug company or Pukka Pies?

No contest Pukka Pies


Gordon
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:32am
Originally posted by Medway Maniac

So, it’s the Halo not the Fire

Normally better, in my opinion, to develop an all new boat that reflects all current technology and thinking.
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Post Options Post Options   Quote 2547 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:14am
Originally posted by Medway Maniac

Good points, Chris and Jim.

So, it’s the Halo not the Fire that needs the lightweight treatment!

No ... it is the helm that need the lightweight treatment ...



Edited by 2547 - 11 Jun 14 at 11:15am
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Medway Maniac View Drop Down
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:09am
Good points, Chris and Jim.

So, it’s the Halo not the Fire that needs the lightweight treatment!
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 11:04am
OTOH, if we average 20lbs heavier than our grandfathers, if we take 20lbs weight out of our boats to compensate for the 20lbs added to our midsections, the boats will probably be sailing on pretty much the same marks...
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Post Options Post Options   Quote Chris 249 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 14 at 10:20am
Originally posted by SUGmeister

Back on topic, the shackle draggers have a bit of history taking one designs and improving them for their own market...

12 Sq Mtr Sharpie



Australian version...



They took Uffa's Jollyboat and did something similar (Well at least I think they improved upon it)

I've often thought, especially in this day of groovy singlehanders if someone were to take the mould of a finn and build a lightweight version of it, put a RS100 rig on, flog it for £7000 instead of £17000 would it be a better boat?


The boats that were lightened and improved down here were different from most of the boats in other countries, which can't be given the same treatment. The boats that received the lightweight treatment were designs like the Sharpie which were, even in their original heavy form, flat in rocker and section. Such boats are popular in Oz, where winds in the sailing season tend to be stronger than in most other places and there is very little inland/lake sailing. We also tended to add more crew weight to give them more leverage to handle our stronger winds. 

The Kiwis were similar in many ways but their boats tended to have more beam and less length; I suspect that this is at least partly because they had some nice protected waterways and therefore were more into day cruising (as was the case in the USA) and perhaps because they had less money per boat, smaller cars, etc.

This historical chance meant that Oz was in a unique situation when plywood arrived and allowed us to make lighter boats. If you have a skinny, flat boat with more crew weight than other places would give it, when you reduce hull weight you are left with a boat that is still sailing to its original lines, or something pretty close to it. Therefore the whole thing ends up working pretty damn well most of the time.

Records from the time the lightweights arrived also show that the real attraction was not the extra speed (although that was appreciated) but the economy and ease of construction, maintenance and launching/carrying across the many sandy beaches. The speed aspect only gained precedence in hindsight.

Boats in other countries tend to have more curve in rocker and section because they are designed for lighter average winds and for other cultural/technological reasons. If you take a whole lot of weight out of them, they end up with too much rocker and not enough waterline or waterline beam. They just don't work as well when you take weight out, and being lighter may also be of less use if you have light winds and different launching setups.

So while I'm a lightweight boat fan by preference and birth, there may be significant problems in taking what worked down here and applying it to other areas. It's not a case of one style being good and the other bad, just different solutions for different situations IMHO.

 


Edited by Chris 249 - 11 Jun 14 at 10:22am
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