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flojo
Joined: 06 Jun 2010 Posts: Location: SF BAY AREA
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Posted: Thu Jun 17, 2010 5:56 pm Post subject: rail shape |
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what is a good rail shape for a thin 3/8 inch paipo? how about the thicker shapes?
thanks,
flojo |
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Uncle Grumpy
Joined: 15 Jan 2007 Posts: Location: San Clemente
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Posted: Thu Jun 17, 2010 7:46 pm Post subject: |
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All you really need to do is knock off the corners, "ease the edges" a little bit.
An eased square edge works very well on thin rails.
Better then totally rounded IMO.
You can get away with just that, up to about 1" or so from my experience.
My 2 ¢
Your mileage may vary.
_________________ Prone to ride. |
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bgreen
Joined: 20 Feb 2004 Posts: Location: Qld. Oz
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Posted: Fri Jun 18, 2010 3:07 am Post subject: |
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Flojo,
Don't even bother rounding. Try a hard rail. If you're not happy with it, take a slight edge off as Uncle G advises.
Bob |
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kid
Joined: 11 Jan 2010 Posts: Location: Bells Beach
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Posted: Fri Jun 18, 2010 4:40 am Post subject: |
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I'm with Bob.
Hard edge gives good release and speed! If you bury the rail deeply enough in the turn it will still hold well! Rounded rails will hold the face better, but the control will be gained by sacrificing speed.....and speed rocks! _________________ "It's not a beer-belly, it's a displacement hull"
www.deluxepaipo.com |
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flojo
Joined: 06 Jun 2010 Posts: Location: SF BAY AREA
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Posted: Fri Jun 18, 2010 10:25 am Post subject: |
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thanks much for the replies--by "hard" rail do you mean just leaving them square or hard down?
thanks
flojo |
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Poobah Dolphin Glider
Joined: 09 Jan 2004 Posts: 696 Location: California, San Diego
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Posted: Fri Jun 18, 2010 11:36 am Post subject: |
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Materials can dictate design. Yes, you can put a sharp corner on a solid timber board with a penetrating oil finish, but I like to ease the edges if I want to varnish or paint a plywood board. |
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Uncle Grumpy
Joined: 15 Jan 2007 Posts: Location: San Clemente
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Posted: Fri Jun 18, 2010 12:49 pm Post subject: |
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By ease I mean just enough that you don't hurt yourself (Splinters!? ) and by hard, yes square. _________________ Prone to ride. |
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mrmike
Joined: 06 Sep 2007 Posts: Location: coronado, ca
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Posted: Fri Jun 18, 2010 6:52 pm Post subject: |
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I get good results with diamond shape rail 60 40 % 60% on top 40% on the botton <>
_________________ PAIPO ON
blog http://mrmikespaipos.blogspot.com |
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geoffreylevens
Joined: 18 Nov 2009 Posts:
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Posted: Sat Jun 19, 2010 10:51 am Post subject: |
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The thicker the rail, the more effect different shapes will have. |
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OG-AZN
Joined: 27 Jul 2009 Posts: Location: Norcal
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Posted: Sat Jun 19, 2010 4:27 pm Post subject: |
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Hey Flojo,
Good to see more paipo riders in the Bay Area. I'd be interested to know how your 3/8" board works for you in the conditions up here. Here's a couple pics of rail shapes I've used on 1/4 to 1/2" ply boards. They all worked well surfing everything from Fort to Pacifica; mostly OB. I'm partial to sharper, "knifey" rail shapes since I ride mostly prone. Good luck.
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handfinished
Joined: 24 May 2010 Posts: Location: Cornwall, UK
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Posted: Sat Jun 19, 2010 5:41 pm Post subject: |
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I prefer a rail much like OG-AZM has shown although I have to admit while its better for turns and tricks its quite a bit slower than my hard edged boards. |
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flojo
Joined: 06 Jun 2010 Posts: Location: SF BAY AREA
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Posted: Sat Jun 19, 2010 5:53 pm Post subject: |
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hey og--thanks for the time you took to set up take and post those pics--i really appreciate it. So what works for you is slightly rounded on the bottom of the rail feeding up into a sharp edge--i will try that. I have made 3 boards so far, all very primative all with very rounded rails-time to try something different.
I intend to ride prone--spent the last 40 years standing and kneeling it is time to take it easy and relax---
thanks again
flojo
ps-i am having a blast with this stuff |
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bgreen
Joined: 20 Feb 2004 Posts: Location: Qld. Oz
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Posted: Sun Jun 20, 2010 3:38 pm Post subject: |
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Flojo,
You can always start harder then round off and test the difference.
Bob |
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surffoils
Joined: 12 May 2007 Posts: Location: Gold Coast, (finally), Australia
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Posted: Sun Jun 20, 2010 9:32 pm Post subject: |
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Picking up on a few things that people have said,
Theres certainly a difference between a sharp and rounded rail with a crisper release coming with a sharper edge.
I dont think theres any suction effect (like on a surfboard rail) when youre talking about rails under 1/2 in thick.
Its hard to get a bouyant rail WITH easy penetration, and vica versa, so rails A ~ D theyre all the standard versions but Id like to try E and F and see if I can combine two usually seperate properties in a rail.
Thanks to the Larry Goddard interview here, Im thinking about trying to blend the benefits of bouyancy of a full rail, with the sharper release and 'sink' that comes with a thin rail and using his Makaha Missile planshape. |
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mrmike
Joined: 06 Sep 2007 Posts: Location: coronado, ca
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Posted: Sun Jun 20, 2010 10:50 pm Post subject: |
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bouyancy is much over rated. IF it is not thin and sink I don't want it. the last one I made was 1/4" thick ply with no rails just took the sharp edge off lots of fun and fast and flexey. might snap on a big wave but what the hell I will make another for $10 and 3 hours work
_________________ PAIPO ON
blog http://mrmikespaipos.blogspot.com |
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