interesting !!!!! well done , i hope it goes nice for you.

think tank!!

Those runners will have a braking action unfortunately, due to the fact that they are curved inward and toed out.

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RoyStuart said..
Those runners will have a braking action unfortunately, due to the fact that they are curved inward and toed out.

Good thing tho if it dosnt work you can sand them off.

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RoyStuart said..
Those runners will have a braking action unfortunately, due to the fact that they are curved inward and toed out.

how do you know ?

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DARTH said..

RoyStuart said..
Those runners will have a braking action unfortunately, due to the fact that they are curved inward and toed out.

Good thing tho if it dosnt work you can sand them off.

exactly

maybe...when the water cannot go anywhere but down....it will give me lift....just maybe.............pushing the envelope too far....is the only way your going to know...if you have pushed it far enough

Agreed it should lift the tail, it will be interesting to see how it goes.

just give it a run with the kite mate ...sorts it out in a couple of mins as you know!

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Prawnhead said..
just give it a run with the kite mate ...sorts it out in a couple of mins as you know!

not a bad idea ph.....had the 7 up this morning...that surely would have shown me any serious design flaws

I would think a smaller centre fin- well maybe

I've got absolutely nothing to add.

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laceys lane said..
I would think a smaller centre fin- well maybe

dunno mate...we will see...it will be an interesting day at the beach

Hey Ron what do you think would happen if the blades ran fairly parallel to the rail then veered out towards the rail line at the end,not sure but Id think that would give great flow and a bit of a squirt in turns- random thought anyway-by the way did you kite F.T. such a great set up there,love that stretch of coast up to Sandon.Looking forward to hearing how it goes in the waves

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RoyStuart said..
Agreed it should lift the tail, it will be interesting to see how it goes.

the water shooting off the outside rail is kind of starting to take that shape....this is a quad fin set up and you can see the water is squirting off the outside fins...it sure as hell is not slowing the board down....I am anticipating that it all will all flow through the turns from rail to rail....the waters angle of attack is changing all the time so I'm thinking the curvature will not be a big concern as the blades are not deep enough

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vanders1 said..
I've got absolutely nothing to add.

vanders1 said..
I've got absolutely nothing to add.

Ricardo1709 said..
Hey Ron what do you think would happen if the blades ran fairly parallel to the rail then veered out towards the rail line at the end,not sure but Id think that would give great flow and a bit of a squirt in turns- random thought anyway-by the way did you kite F.T. such a great set up there,love that stretch of coast up to Sandon.Looking forward to hearing how it goes in the waves

hey ricardo...my last post pretty much answers my thoughts....what you described is the theory the bonza design was based on...I think it was supposed to work like a ventury....compress the water flow then release it...I dabbled in bonzas for awhile, though I never liked them much.

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vanders1 said..
I've got absolutely nothing to add.

here is a diamond in the rough for you V

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arkgee said..

laceys lane said..
I would think a smaller centre fin- well maybe

dunno mate...we will see...it will be an interesting day at the beach

That fin second from the left is is a nice side shape ! similar to a fin i had in a knee board once .

if there ever was a top ten thread list I think you would have most of them filled mr goddard. am really looking forward to see how this one goes in boundry pushing yeeeeooooow

+1

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here is a diamond in the rough for you V

Cheers mate, looking good.

I think I'll actually get you to supply one of those Fluid Flex fins with it after all, they look good.

Looks like a board made for figure 8's in the pocket...not for going straight gunning for the shoulder

She'll go alright & you are da man to make any adjustments work RG ..... nice collection of fins too

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vanders1 said..

here is a diamond in the rough for you V

Cheers mate, looking good.

I think I'll actually get you to supply one of those Fluid Flex fins with it after all, they look good.

Nice "SPOT"

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MickPC said..

Looks like a board made for figure 8's in the pocket...not for going straight gunning for the shoulder

Yeah I've seen your video.

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arkgee said..

hey ricardo...my last post pretty much answers my thoughts....what you described is the theory the bonza design was based on...I think it was supposed to work like a ventury....compress the water flow then release it...I dabbled in bonzas for awhile, though I never liked them much.

The venturi was for 30 years what the Campbell Bros thought accurately described the principle behind their bonzer setup... but it wasn't.

I pointed this out to them ten years ago and was banned from surfermag ( temporarily as it turned out) for doing so, you'll notice however that they no longer mention the venturi principle on their site.

The bottom line is that the venturi is a closed system, the surfboard hull is not.

Compressing and/or constricting water flow will always create more drag, the idea that by constricting the flow one speeds the water up is a complete myth.

The bottom line is that disturbing the water in any way slows the board down, we have no choice but to do so but keeping it to a minimum promotes speed.

Your inwards curved runners are definitely going to make the board slower than the same board would be without them, sorry but that can't be helped.

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arkgee said..

A guy who can dig a rail that deep I'm listening to him.

More rail, and deeper... just saying.... but it's hardly relevant to the physics of constricted flow...

+1 mac...you make such beautifully finished boards RG...probably will get roasted for saying this...but the only ones who also have such perfect glassing sanding / gloss coat are mctavish.

good bottom turn Roy

I'm very interested in this board,,,,im happy just sitting back and injoying this thread,,,

didnt George greenough do something like this in the 70s on kneeboards.
i remember something like that in a tracks mag,, but hey long time ago Now!