44.25 paipo

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44.25 paipo

Unread postby asier esnal » Tue Oct 09, 2018 3:01 pm

good morning, I'm super happy with the paipo de horns in big waves is going very well. I've tried it in waves of 1.5m, it seems that it sails the train tracks, happy
 
Now I'm thinking of something with more spin, I follow the same path as a surfboard.

in this design I have only barred the tail, removing the horns. I have put 4 fins, but following the way that the surfboard 2 lateral and 2 central

What do you think about this position of fins?
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Re: quad fins 44.25 paipo

Unread postby Pes78 » Wed Oct 10, 2018 12:00 am

general rule is on wide tails you would want your fins placed closed to the rail.
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Re: quad fins 44.25 paipo

Unread postby asier esnal » Wed Oct 10, 2018 2:28 am

The idea of centering the rear ends is to work without the turbulence generated by the front ends, so they get the maximum performance

Has someone mounted fins like that? How did it work?
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Re: quad fins 44.25 paipo

Unread postby rodndtube » Wed Oct 10, 2018 6:20 am

As a trailer, I might just go with a single small fin instead of two. Maybe even a knubster type.
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Re: quad fins 44.25 paipo

Unread postby asier esnal » Wed Oct 10, 2018 8:20 am

a very interesting idea, I'm going to study it seriously. 2 + 1 type mark richards
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Re: quad fins 44.25 paipo

Unread postby asier esnal » Thu Oct 11, 2018 8:46 am

I've been looking at bodyboard photos, for my taste the most successful version in 2 or 4 fins.

I have modified the template. adjustments in the tail. a little narrower, I want a big push from the waves worse if something more turn goes from 95 to 92.5%

I think it starts to have good shape
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Re: quad fins 44.25 paipo

Unread postby nomastomas » Fri Oct 12, 2018 8:06 pm

I suggest you study McKee's Quatro Formula. It's not just about fin placement, but individual fin template as well. He lays it all out.
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Re: quad fins 44.25 paipo

Unread postby asier esnal » Sat Oct 13, 2018 12:44 pm

http://www.mckeesurf.com/?page_id=267

for the position of the keels I followed the tables that mckee provides, adapted a bit to the paipo.

I still need to define the toe in del fins but surely the front ones are 1/8 and the rear ones parallel

not being what you mean, the kind of fins to ride? Is this graphic? http://www.mckeesurf.com/wp/wp-content/ ... ble_02.png
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Re: quad fins 44.25 paipo

Unread postby nomastomas » Sat Oct 13, 2018 12:49 pm

1/8" front and 0" rear favors speed over turning.
1/4" front and 1/8" rear favors turning over speed.
But also...
Larger fin front and smaller fin rear favors drive
Larger fin rear and smaller fin front more pivot-y turns.
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Re: quad fins 44.25 paipo

Unread postby rodndtube » Sat Oct 13, 2018 3:57 pm

Nomas, within the specs you mention above is there much comment on fin (skeg) plan shape?
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