Inverse Rail Board

What works and what doesn't. Share design ideas, references and contacts for paipo board builders.
CHRISPI
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Inverse Rail Board

#1

Unread post by CHRISPI »

The idea is to have the thinnest rails with bouncy. Obviously the rail will be fragile being so thin
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Deck been glassed
Deck been glassed
GOPR2504 (2).JPG
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jbw4600
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Re: Inverse Rail Board

#2

Unread post by jbw4600 »

Very interesting! I look forward to hearing your ride reports.
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krusher74
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Re: Inverse Rail Board

#3

Unread post by krusher74 »

So complex it boggles my mind! :o

I think i could only make sense of it by riding one. :D

Would be interesting the see some fluid dynamics modeling done on your designs.
CHRISPI
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Re: Inverse Rail Board

#4

Unread post by CHRISPI »

I guess the idea is to focus the water flow, to get better lift at lower speed. It is ultimately no faster at top end but you get there faster, like a car with lots of toque
Attachments
GOPR2518.JPG
GOPR2514.JPG
GOPR2515.JPG
GOPR2511.JPG
GOPR2510.JPG
CHRISPI
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Re: Inverse Rail Board

#5

Unread post by CHRISPI »

Torque
GeoffreyLevens
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Re: Inverse Rail Board

#6

Unread post by GeoffreyLevens »

I'm thinking a couple extra layers of 4 oz. glass on deck side towards the rails in back (compression of glass in turns) might be beneficial both for longevity and also for more snappy flex of the "wings"
CHRISPI
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Re: Inverse Rail Board

#7

Unread post by CHRISPI »

I only use 6 oz now and has 3 m of cloth in it, 5 layers on the inside of the rails it’s strong with some flex hoping to teats on Sunday. Always exciting riding a new design for the first time! The last board set very high standards
GeoffreyLevens
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Re: Inverse Rail Board

#8

Unread post by GeoffreyLevens »

My eyes certainly like the look of it! Looking forward to a ride report.
CHRISPI
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Re: Inverse Rail Board

#9

Unread post by CHRISPI »

First test on Sunday 1.3 m @ 13 sec onshore winds with blue bottles ,set waves closing out .It rode the inside mush well getting on top off and making even the teeniest waves great fun.unfortunatly all the bigger pitching faces ended in spectacular nose dives it seems to jump out of the wave face . It will take some more testing to understand .The sharp rails hurt my fingers when carrying it normal under arm.
CHRISPI
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Re: Inverse Rail Board

#10

Unread post by CHRISPI »

The other problem is I am finding bruises and tender spots that I never got with other boards.
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bgreen
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Re: Inverse Rail Board

#11

Unread post by bgreen »

Sounds like it is going to take some time to work out how to ride it in hollow waves or you have a mush rider.
CHRISPI
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Re: Inverse Rail Board

#12

Unread post by CHRISPI »

Second test completed , the 1 in keel that I thought was going make the board run straight as an arrow, I found as it gets up on a rail in the wave face there is a transition faze were the out ward wash pushes the keel and yaws the board sideways. The idea off focusing water flow clearly works but not in the way I thought .The beast feature is how easily it gets on the plain even on the smallest waves , also great when past the yaw faze in the vertical zone on the rail tips it fly’s .This is going to be a good board.
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