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#200

Member Since 04 Sep 2005
Offline Last Active Today, 04:21 PM
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Posts I've Made

In Topic: Ker 43 Ptarmigan

05 February 2016 - 02:28 PM

Otra Vez is currently at Hamble Yacht Services in the Uk. The winter project list is pretty small, with a non-skid respray and moving the jib leads inboard being the majority of the effort.  We are hoping to get an effective sheeting angle of 4.5 degrees with the changes to the jib leads.  

 

A few photos of the work that is just getting started...

 

Attached File  jib track work OV 3 guy.jpg   133.07KB   14 downloadsAttached File  Jib track work OV 2 guy.jpg   128.61KB   11 downloadsAttached File  Jib track work OV Guy.jpg   110.78KB   10 downloads

 

 

For the more technical minded we are using 200kg/m3 HD core as was originally specified for the boat, then 7 layers of uni-directional carbon and 3 layers of db carbo, which is 2 skins more than the original spec.

 

We hope to finish the jib lead mods by the middle of next week then the painters will take over and shoot the deck.

 

Our first regatta on a Fast40+ startline is the RORC Easter Challenge, March 25-27.

 

Bill

 

 


In Topic: IRC tweaking

29 January 2016 - 11:12 AM

My thoughts...

 

get an endorsed certificate...its always more favorable....most boats are much heavier than the number on the brochure

check every measurement, Forestay Length is especially sensitive...

with the disclaimer that this holds true for the boats i have owned...1 sqm of Head sail area (HSA) is roughly 0.001 and 2.5 sqm of spinnaker area (SPA) is 0.001

make the bottom perfect including the keel and rudder (template, blueprint, longboard) it costs you nothing but money/time and is the best investment you can make

IRC prefers high aspect mainsails, roach up high is expensive...

know your venues...don't get penalized for Sail Area or extra kites that you don't use, ie stick to 3 kites on the certificate, don't over complicate you life with too many sail choices

a 3 blade folding prop will save you 0.001, if you have anything but the gori racing prop, their 3 blade will actually reduce your drag...compared to most folding 2 blades

 

Sailing the boat well is more important that it being perfectly optimized.

 

Bill

 

 

 

 

 


In Topic: Federal Judge Awards 1.46 million dollars to Crew-Member Against Vespe

18 January 2016 - 09:04 PM

Something doesn't add up.  There has got to be more to the story.  

 

The world of a professional racing sailor is nothing like that of a sailor in the merchant marine and by litigating he had to know he would never work in the industry again.  It seems an odd choice to forgo decades of potential employment for what would be, after lawyers fee's, a relatively small amount of cash.

 

Bill


In Topic: ORC certificate

04 January 2016 - 09:49 AM

 

 

The swan worlds are going to be rated under ORC this year, I've read about some ORC optimised boats but just I know very little about the rating system. I'll be helping to run a swan entering into the classics class so will be a big heavy boat. What are the trends within the system? I've got good knowledge of optimising for IRC but none at all for ORC.

 

obviously, boats optimize for ORC, as they do for any rule.., 

 

but it's worth considering at first that unlike IRC.., ORC is not designed to be a type-forming rule.

 

that is, within certain design parameters, ORC attempts to rate boats "fairly"

 

IRC explicitly does not attempt to do this, rather in a relative sense IRC purposely gives rating credits to design features the rule likes, and penalties to design features it doesn't like.

 

so, one might argue that for most boats, optimization is less important under ORC than under IRC

 

Well said us7070 it is about time we are all able to race under a fair handicap system like ORC which rates the boat only for its performance, unlike IRC, with its secret non transparent rule, selects what boats they like and who they like in giving ratings to. ORC is so much fairer than IRC in being transparent, cheaper to rate, unnecessary to optimise to the extent as under IRC and able to rate both displacement and planing designs equally so the can compete together in handicap racing.

 

Been there, done this.  It is possible to get a 4-5 minute per hour difference in rating between two boats when changing systems.  ORC has as many peculiarities as IRC and there are ORC winners (Swan 45) as well as boats that rate poorly.  

 

Bill


In Topic: Fast 40 on a budget?

16 December 2015 - 05:48 PM

Attached File  KerCarkeek.jpg   175.77KB   8 downloads