Author Topic: Dimensions Rule of Thumb  (Read 14251 times)

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Offline Looseness

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Re: Dimensions Rule of Thumb
« Reply #15 on: March 02, 2008, 05:48:16 PM »
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  • Do you add the wetsuit weight or not? There's a board of mine that rides/paddles great with a suit but can be a bit stiff and hard to set a rail off the bottom if I surf it in trunks.
    It's no better to be safe than sorry....

    Offline Crackie Onassis

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    Re: Dimensions Rule of Thumb
    « Reply #16 on: August 02, 2008, 02:20:41 PM »
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  • I can't believe that according to this equation, my 6'6" CI Black Beauty will float better than a 6'8" JC SD3
    So heavy you can't even pick it up.

    Offline boyeee

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    Re: Dimensions Rule of Thumb
    « Reply #17 on: August 02, 2008, 05:33:12 PM »
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  • my last 3 boards  (my every day board) i have had (all the same dims) came out to: 19.9963

    thats good right? 
    team freeloader!

    Offline Justin-PI

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    Re: Dimensions Rule of Thumb
    « Reply #18 on: April 17, 2009, 12:35:28 PM »
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  • math geeks
    "ZEEEE GERMANS???!!!!"
    -T'kish

    Offline ez_ed

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    Re: Dimensions Rule of Thumb
    « Reply #19 on: April 17, 2009, 01:34:20 PM »
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  • Checking the Firewire website I was shocked to see that the 6'2" fish had more volume than the 7'2" Alternator.
    "Live like you're dying."

    Offline Justin-PI

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    Re: Dimensions Rule of Thumb
    « Reply #20 on: April 17, 2009, 03:01:04 PM »
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  • 19.4  You may be onto something here.

    Hey "dad" you're off the job again. Kui is once again Justrodamus' go-to Science Officer. Sorry.
    "ZEEEE GERMANS???!!!!"
    -T'kish

    Offline Justin-PI

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    Re: Dimensions Rule of Thumb
    « Reply #21 on: April 17, 2009, 03:03:44 PM »
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  • Seriously,

    Little Nasty, check out my twinzer. Of everyone I know, I think that you are the person who can pull the sword from the stone with this board.

    It is the ideal Box-Rocket. Round tail keeps you barrelled, yet it is fast enough to outrun closeouts. The size (do the math: 6'2"L-19"W-11.5"N-14.5"T 2.38"R). So, if your biorhythms check out, you should really come by and give this board a look (maybe ride it on Thursday)?



    you know crackie i was seriously considering it.  In fact, that was part of the reason i went to my dimensions sheet.  Thing is that i think it's a little too thin for me, and i could probably use another inch or two.  The volume/buoyancy works out to around 67# which is actually less than my 6'1" sharpeye.  Don't get me wrong, i think i'd love love love that board on a 3-4ft ocnl 5ft day with 8-12kt offshores.  I just need a little more volume for my fat ass for the more typical NYNJ days - and i'm looking for an everyday all-rounder kinda board.

    Plus, i really liked loose's firewire - i'd like to try a board that really keeps its spring for a long time (if in fact they do).


    you ever consider a custom shape to whatever dims your little heart desires (or whatever calculations you brain comes up with) glassed with resin X??

    go down to natures shapes or shoot mike an e-mail from his web site and he'll give ya the whole run down.  the flex and durability is amazing on those boards.



    stop the presses! You can order surfboards, CUSTOM MADE to your specs? Get out of town. Next thing you know you'll be able to pick your colors or which side the leash plug goes on. Silly talk.
    "ZEEEE GERMANS???!!!!"
    -T'kish

    Offline sir_schadenfreude

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    Re: Dimensions Rule of Thumb
    « Reply #22 on: May 20, 2009, 06:42:37 PM »
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  • Seems interesting, but surfboards are not boxes, so I'm not sure how accurately you can compare the volume of two different shapes based on a LxWxT calculation.  A fish is going to have a lot more volume than a pointy thruster with the same measurements--same goes for a long board and a gun.  Still an interesting relationship, though.

    Offline little_nasty

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    Re: Dimensions Rule of Thumb
    « Reply #23 on: May 24, 2009, 07:39:25 PM »
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  • Seems interesting, but surfboards are not boxes, so I'm not sure how accurately you can compare the volume of two different shapes based on a LxWxT calculation.  A fish is going to have a lot more volume than a pointy thruster with the same measurements--same goes for a long board and a gun.  Still an interesting relationship, though.


    as mentioned, it's been duly noted that boards are not boxes and come in different shapes.  In fact though, i used the equation for an ellipsoid which is 4/3*pi*L*W*H/(2^3) then figured buoyancy as around 62.3lbs/cu.ft.  So actually i think it's pretty close given that ellispoidal volume is linear in those dimensions same as rectangle and then you just have to adjust for constants and your weight and then a little common sense for the shape.  But as a rule of thumb, i know that a "25" is going to be quite a bit more "floaty" than a "22" and that an "18" might bog a bit in mushy waves for a guy like me.

    Offline jamie

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    Re: Dimensions Rule of Thumb
    « Reply #24 on: June 04, 2009, 11:38:41 AM »
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  • Me: ~200 lbs
    My boards:
    Daily Driver: 6'4"x19 7/8 x 2 5/8 squash==== 19.82
    Step Up: 6'6"x19 1/2 x 2 5/8 roundpin=====19.96
    "Reverse Mullet" Fish/Squash Hybrid that I just shaped for small waves: 6'1"x21x2 5/8====20.12


    Looks like you are onto something...

    ya_bloody_wanka

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    Re: Dimensions Rule of Thumb
    « Reply #25 on: September 04, 2009, 02:20:49 PM »
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  • this is cool i weigh 150lbs and i did a few of my favorite boards (between 5'6-5'11) and one i got coming and they are all between 17-19. i guess if your wondering if a board will work based on dims you can figure out what range of numbers work for you which should mean those dims should work

    Offline skSURF

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    Re: Dimensions Rule of Thumb
    « Reply #26 on: September 08, 2009, 01:52:28 PM »
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  • this is cool i weigh 150lbs and i did a few of my favorite boards (between 5'6-5'11) and one i got coming and they are all between 17-19. i guess if your wondering if a board will work based on dims you can figure out what range of numbers work for you which should mean those dims should work
    Based on the overall shape of the board you can add or subtract from the target number too. Fish +1.5 MinniGun -1.5
    Trust in the board.

    Offline sandorka3

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    Re: Dimensions Rule of Thumb
    « Reply #27 on: April 06, 2011, 07:38:06 AM »
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  • interesting information!!! thank you!!!
    It is challenging for me completely to make a resume without online facilitation. When I incurred a work I bought my instant resume. I sent the master information about my trusty previous remains and unite, and the service wrote a proper resume for richly me. I was much amazed.

    Offline adamlesper

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    Re: Dimensions Rule of Thumb
    « Reply #28 on: January 04, 2013, 11:01:00 PM »
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  • Interesting thoughts although my recent boards came out in the 28-30 range as I have asked my shaper to add volume + i'm only 145lbs.  My new board is 6'4 x 20.5 x 2.875 and it comes out to 30 when I apply your equation.  I havent ridden it yet but am anxious to see if it is too much board. 


    How much weight does a 5/4 winter suit with a hood, boots n gloves add when wet? 

    Offline BltByKrmn

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    Re: Dimensions Rule of Thumb
    « Reply #29 on: March 01, 2013, 01:15:57 PM »
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  • Call me a nerd, but I put this together.  It's every board I've spent a serious amount of time on.


    I'm 6'1" 170-175lbs and an average surfer. Fitness fluctuates greatly depending on season, my paddle strength right now will be no where near what it will be come late summer into the fall which effects the notes section quite a bit.


    Looking at this, I really should be on boards that are 31 for EPS/Epoxy and 32 Poly if I want to maximize the time out actually surfing vs paddling.  But then of course it will be early September when I'm in boardshorts wishing I was on aboard that was a little smaller.  ;)