Classic Rating Formula (CRF) "Rig Factor"

Discussion in 'Sailboats' started by griffinb, Jan 30, 2018.

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Which rig seems best-rated in the CRF?

  1. Jib-Headed: Sloop = 1.00

    0 vote(s)
    0.0%
  2. Jib-Headed Yawl = 0.91

    1 vote(s)
    50.0%
  3. Jib-Headed Ketch = 0.90

    0 vote(s)
    0.0%
  4. Square-Head: Sloop = 1.20

    1 vote(s)
    50.0%
  5. Schooner: Staysail = 0.90

    0 vote(s)
    0.0%
  6. Schooner: Gaff Fore, Marconi Main = 0.80

    0 vote(s)
    0.0%
  7. Gaff Headed: Sloop = 0.92

    0 vote(s)
    0.0%
  8. Gaff Headed: Yawl = 0.83

    0 vote(s)
    0.0%
  9. Gaff Headed: Ketch = 0.82

    0 vote(s)
    0.0%
  10. Schooner: Gaff Fore, Gaff Main = 0.70

    0 vote(s)
    0.0%
  1. griffinb
    Joined: Jan 2018
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    griffinb Junior Member

    I can't find anything written about minimum main/mizen mast ratio to qualify as a yawl/ketch.

    I'm sure if you pushed it too far the race organizers would just call you a sloop.
     
  2. griffinb
    Joined: Jan 2018
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    Location: USA

    griffinb Junior Member

    You're absolutely right. And the creators of this rating formula seem to be paying better attention than some. For instance, when IOR boats started getting ugly to try to beat that Rating rule.

    I'm sure if anyone showed yo with foils or wingsails the wouldn't be allowed to race, even if the rules don't expressly forbid those designs.

    The challenge is to beat the rule without looking like you're trying. Build a boat that blends in with the rest of the classic fleet, but finished at the front.
     
  3. Bruce Woods
    Joined: Sep 2007
    Posts: 113
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    Location: perth

    Bruce Woods Senior Member

    Griff its time to Lawyer up and find out. :)All along the path of development/measurement rules there has been many loopholes found, exploited and plugged.

    Who can forget the IOR 1/4 tonner with Mainsail only rig, or the Moth class windsurfer, or the 12 foot class gate crashed by Jim Youngs Kitty Cat.
    What may appear obvious to some , ain't to others.

    Sure there been a few rejected before the start gun, the most notable was another IOR boat with forestay and back stay but no Shrouds. With a athwarts stay base length of "0" the vessel gained a large sail area advantage. I'm sure CT249 will know the goss.
     
  4. Earl Boebert
    Joined: Dec 2005
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    Location: Albuquerque NM USA

    Earl Boebert Senior Member

    The title of the classic book on the topic says it all: "Men Against The Rule."

    Cheers,

    Earl
     
  5. gggGuest
    Joined: Feb 2005
    Posts: 791
    Likes: 14, Points: 18, Legacy Rep: 76
    Location: UK

    gggGuest ...

    Strictly speaking it wasn't rejected. The rule folks used a provision in the rule to allow them to make an adjustment. It was still allowed to compete, but with a rating that much better reflected the actual boat - meaning the owner had spent a large sum of money for at best no measurement benefit at all. At that point the boat was withdrawn from the event and never competed.
     

  6. griffinb
    Joined: Jan 2018
    Posts: 18
    Likes: 0, Points: 1
    Location: USA

    griffinb Junior Member

    Good eye. It doesn't seem like rating should change much from a 99% to 100% to 101% jib.

    On the topic of parentheses, the formulas for LBRC, DLF, and SaDF have odd numbers of them...

    I'm going to email the rule committee and ask for clarification.
     
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