I love playing with different shapes and designs so I am hoping some of you out there might want to share any ideas or maybe some of you have plans for a shape you want to do soon. Basically lets talk shape and designs.... I am riding a 6 finner ATM and getting used to it, plan on doing another and just make some small adjustments to improve how she goes....also doing some other stuff....

Hey Pridmore, I posted on RS to shapers but I'm here in preference,take a look at John Kelly's Hydro Board think of allying the step to a stinger for one idea or go beyond the Bonzer idea with twin Venturi channels and rolled vee and matching the fin cant and angle to the venturi.Think it through and see!fun and lots of dust

Jaff, that sounds like quite a shape! Do you have anything in your arsenal at the moment like that?

Short answer Cthuhu, is only the standard nose concave to twin concaves at the tail with a rolled vee, then vector side fins on all my boards from 9ft down.Lon answer; I discussed these ideas years ago with Bob McTavish but the amount of shaping for a true venturi channel system is mathematically precise and no-one could quite eyeball it as shaping was then. The bonzers were the closest. Maybe the new computer shaping machines could crank some shapes out!I shaped a John Kelly Hydro shape shorter board with thruster configuration, extreme acceleration when you engaged the step often causing kook outs off the back,not smooth in its transitions and if they were lightly glassed continual snapped the tail off as the transition zone ( the step) was a weak point at the focus of force on the board.Consider that most short board surfing is highly reliant and the riders skills and not extreme factors in design. The weird and new stuff creeps in slowly.Slight physics lesson next; Bernoulli's principle;Take one cotton reel and one round thick cardboard drink coast ( enjoy the drink) put pin through centre of coaster. Put pin up the centre of the hole in cotton reel.You are going to blow down the hole of the cotton reel onto the coaster at the bottom of the hole. B4 you do speculate; what will the coaster do? OK. Now blow and observe!Principle, the faster the fluid or gas is moving the less its pressure!Fins foils, wings, stingers, concaves, venturis etc all rely on this.That's why I'm thinking along these lines, my personal shaping is good enough for standard average guy boards. this is precise to work well.Cheers next post E= MC2

Sorry but I havent checked here for a while...please PM me nd would be very interested in your thoughts on this design, always interested in anything alternative and functional...cheers, MP

venturi's?-contact Dennis Anderson--he knows......I think he is still around Coffs Harbour

Double answer here in the order you posted, Pridmore will PM you and talk design with you you are certainly dragging every bit of information to your shaping bay great attitude now that I'm back from Scotland might hunt the bat to view what your doing in reality.

Tigers thanks for the tip on Dennis Anderson and as I said under hatchet fins welcome.

Jaffa

thx Jaffa

yeah, love to hear more about this shape and where you want to take it and what you want to achieve with it...sounds interesting and as for checking out the bat, no worries at all but things have evolved since that one was shaped ( even though it is one of my all time faves ) but things are always evolving with my designs and thats how it should be, always fine tuning and moving ahead or at least moving...doing stingers, quads and eggs and even been copying a 1981 kneeboard and really loving my shaping...cheers

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