Re: Radial mast Changes

[davidhazlehurst <davidhazlehurst@xxxxxxxxxxx>]

John, my recollection is that the class voted for a carbon fiber upper mast
for use with the radial rig in September '99, at the same time they voted
for the new downhaul, outhaul and vang systems. The expectation was that the
new mast will provide improved sail shape for the radial rig. Most of the
class members I talked to in the weeks before votes were cast planned to
vote for the new material. One exception was a good friend who was opposing
it on the basis "they'll make us all change". He lost.

> From: John D-E <john@jdecm.com>
> Organization: John D-E
> Reply-To: john@jdecm.com
> Date: Thu, 03 Nov 2005 07:36:07 -0700
> To: cmurphy@comcen.com.au, "'Malcolm Osborne'" <malcolmo@telkomsa.net>
> Cc: laser@laser.org, "'Laser Masters E-Mail List'" <masters@laser.org>
> Subject: Radial mast Changes
> 
> The wording on the ISAF site states:
> 
> http://www.sailing.org/meetings/admin/Submissions.asp?Conference=2005_11
> 
> "For the last 3 years the Laser builders and the Laser Class have jointly
> been testing and developing composite upper mast sections for the Laser
> Radial produced using a continuous poltruded process. This process creates a
> uniform section tube of the same dimensions as the existing aluminium tube.
> The composite tube has two advantages over aluminium extrusion in that it
> produces greater uniformity and is stronger. Static tests show a 70%
> increase in strength without making the mast stiffer. To compensate for the
> difference in dynamic response between aluminium and composite the section
> has to be 14% more flexible to achieve the same performance as aluminium.
> 
> Preliminary sailing tests have shown that lighter weight sailors are more
> comfortable with the composite mast in strong winds whilst heavier sailors
> do not suffer a performance loss. Final independent sailing tests are
> currently being conducted in 4 different locations and a more detailed
> report will be published prior to the November conference. The composite
> section will be widely available in early 2006."
> 
> My recollection is that the class voted down the composite mast section a
> few years ago.   The claim that heavier sailors do not suffer a performance
> loss is "interesting".   Its also interesting the Laser Class (i.e. you and
> me) having voted down the change now appears to be funding it.  Also
> interesting that ISAF has to be advised and even vote on it yet the average
> laser sailor does not.  The "Regulation/Racing Rule/Affected" is stated to
> be "Women's One Person Dinghy Mast".
> 
> John D-E
> District 5 Sec 
> Grand Master who wants to stay with full rig at Masters Worlds when he turns
> 65 in 2101.
> 
> -----Original Message-----
> From: owner-laser@cerebus.winsite.com
> [mailto:owner-laser@cerebus.winsite.com] On Behalf Of Chris Murphy
> Sent: Wednesday, November 02, 2005 11:44 PM
> To: Malcolm Osborne
> Cc: laser@laser.org
> Subject: Re: CF Radial mast
> 
> The CF radial mast doesnt require a vote because it is only a change of
> material in the mast section
> 
> it will be for all radial competition
> 
> Malcolm Osborne wrote:
> 
>> I saw the following on the ISAF website amongst comments on proceedings
>> scheduled for the Singapore conference:
>> 
>> " Laser Radial sailors are sure to be interested by submission 028
>> which proposes a composite glass/carbon fibre top mast, which it is
>> proposed will increase the competitive weight limits of the competitors. "
>> 
>> I've seen this being mooted previously, but only as a concept being
> trialled.
>> Is this only for the Olympics or would it come into general use for all
>> Radials ?
>> 
>> I was under the impression that changes to Laser equipment would have
>> to be balloted amongst the members before being submitted to ISAF?
>> There was a ballot recently, but it did not mention the Radial mast.
>> 
>> regards,
>> Malcolm Osborne
>> Benoni, South Africa
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