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Thread: The New Version of the MM Class?

  1. #1

    Default The New Version of the MM Class?

    I've just been reading over the rules of the RG65 class.... It occurs to me that this is the old MM Class reborn.... MM stood for "Mini-Marblehead".... They were basically half-size M's.... Vane boats that were 25" long with 200 sq.in. sail area.... developed in the 1970s.... They were underpowered, and the yachts that developed from them ended up with deeper keels and more sail area.... The orginal class never caught on, although there were many plans available in England for a short time.... I produced a boat based on the MM that was basically a scaled down version of my Nerka 36/600.... It was called the "Vacation One-Design".... Again, it never caught on, although I sold a couple of dozen.... The last one built had a 12" deep fin and quite a large rig and was remarkably fast.... Of course today, it would be way too big and heavy.... hmmmmmmmmm.... maybe a scaled down Venom 36/600?.... let's see.... 5" beam (12.7 cm).... displacement of 1.8 lbs (830 g).... How does that sound?....

    Interesting how some ideas are ahead of their time.... Good on you guys !!!

    Bob
    Mozey On Inn and discover what Coalmont has to offer. www.mozey-on-inn.com

  2. #2
    Join Date
    Jan 2008
    Location
    Buenos Aires - Argentina
    Posts
    75

    Default Re: The New Version of the MM Class?

    Hi Bob:
    A great pleasure to "talk"with you.
    You are right!!!
    The first RG65 was made in 1950,(really G65) but in 1970, somebody import from Europe the "SHORTBOAT" plans. 1/2M.
    It was 62.5 cm LOA.
    Making some modifications , LOA 65 cm, keel: 20cm. was an G65. (Braine wind rudder)
    Its weight was 2.00 kg. (today a nice weight is 1.1 kg or less)
    The G65 became RG65 when a radio control was install. (1978)
    Here you can read the first rules of the class (they are in spanish)
    http://www.rg65.org/reglamento-de-claseclass-rules/

    Cheers

    Please excuse my poor english.
    Last edited by maximo_lange; 02-05-2011 at 11:34 AM.
    Maximo Lange
    ARG-71

  3. #3
    Join Date
    Jul 2005
    Location
    Brooklyn, NY USA
    Posts
    524

    Default Re: The New Version of the MM Class?

    Hi Bob,

    It is starting to sound like you're contemplating coming out of retirement. If so, welcome back and more power to you!

    Niel

  4. #4
    Join Date
    Nov 2010
    Location
    Colorado
    Posts
    122

    Default Re: The New Version of the MM Class?

    Bob,
    I think any one of your venom/vipers built to RG 65 size would work well. I would sure try one if they were available.
    Jfisher
    Star 45 national champ 09,10 Star # 842
    Julie Ayers Winner 08
    10R national champ 07 10R #12
    RG-65 #577
    M #3718

  5. #5

    Default Re: The New Version of the MM Class?

    Naw.... I'm having too much fun with airguns to ever go back to yachts.... and where I live there are NO materials available within 2 hours driving time (for the low tech stuff).... I just enjoy reading about a sport that I devoted over half my life to.... and throwing in my 2 cents worth when I have something to offer....

    Bob
    Mozey On Inn and discover what Coalmont has to offer. www.mozey-on-inn.com

  6. #6
    Join Date
    Nov 2004
    Location
    New Hampshire, USA
    Posts
    926

    Default Re: The New Version of the MM Class?

    I'm happy to listen to your 2 cents anytime, Bob...good to have you here. I'd welcome your comments on any of my designs that you see around here...I get tired of having to listen to Niel all the time

    Bill

  7. #7
    Join Date
    Nov 2010
    Location
    Colorado
    Posts
    122

    Default Re: The New Version of the MM Class?

    Bob,
    Would you consider selling plans or lines of your designs?
    Jfisher
    Star 45 national champ 09,10 Star # 842
    Julie Ayers Winner 08
    10R national champ 07 10R #12
    RG-65 #577
    M #3718

  8. #8

    Default Re: The New Version of the MM Class?

    The MM class was developed by Vic Smeed and announced to the world in an article on an MM boat called "Water Baby" in late 1954. The name stood for both "Half M" and "Model Maker" magazine. The rules were 25 in. LOA (63.5 cm) and 219 sq. inches of sail (1412.9 sq. cm). As with the M class, a garboard radius was required, measured by a British halfpenny coin [!]. "Water Baby" had a beam of 5 1/4 inches (13.34 cm), a draft of 5 3/4 inches (14.61 cm) and a displacement of 55 oz (1559.22 g) of which 35 oz (992.23 g) was ballast. The USVMYG reprinted the plans in 2003. Several were built, and they all sail well.

    FYI.

    Cheers,

    Earl

  9. #9
    Join Date
    Jul 2005
    Location
    Brooklyn, NY USA
    Posts
    524

    Default Re: The New Version of the MM Class?

    What's this then Bill?

    You are very welcome to ignore my posts, they are not aimed at you but at new builders in order boost them along the learning curve and hopefully more satisfying results the first time out.

    After all, you do need all the commentary here to fill in the blanks of your simple hull lines plans. It doesn't take much to design a hull with a computer program, a few hours on a tutorial and you can create hull shapes like popping popcorn. Its the rest of the boat that makes the difference between a winner and a dud, especially in the smaller classes like this one and the Footy. Its appendage placement and foil section, sails and rigging, r/c layout and correct gear choices that the rest of us discuss on this forum that make your lines complete.

    So Bill, keep pop, pop, pop, pop, pop, pop, popping those hull lines out and the rest of us will figure out how to make them into boats.
    Last edited by Niel; 02-08-2011 at 11:27 AM.

  10. #10
    Join Date
    Aug 2003
    Location
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    3,811

    Default Re: The New Version of the MM Class?

    Guys - please be sure to keep the posts from becoming personal.
    (and yes, Niel - I did see the "Smilie face" indicating humor - someothers might not.)

    (my "wink" )

    Dick
    Last edited by Dick Lemke; 02-08-2011 at 01:36 PM. Reason: language clarification

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