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Sandwich

 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    rodndtube.com's (OLD) MyPaipoBoards Forums. Reading but no posting on the OLD forums. Forum Index -> Paipo Board Design & Building
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AM_Glass



Joined: 09 Aug 2004
Posts:
Location: Santa Cruz, CA

PostPosted: Wed Sep 08, 2004 2:14 pm    Post subject: Sandwich Reply with quote

Does anyone have any experience building semi-hollow wood/foam/wood sandwich boards? I've got an idea in mind but I'm wondering on the logistics.

Roy, you might be able to help me out on this one. If I only used two support beams running the length of the board say 1" or less wide and 2" apart could I get all the flex of a sheet of (1/4")plywood to happen on only one face (bottom only) of a hollow board? I don't have the ability to build a rocker setup like you use, so think cheap in your answer. I'd like to have a flat deck and a rockered bottom but I'm afraid the bottom will want to flatten and half the curve will be on the bottom, half on the deck.

I don't want cross beams because I'm trying to maximize flex.

This probably doesn't make any sense to anyone else but me...
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Poobah
Dolphin Glider


Joined: 09 Jan 2004
Posts: 696
Location: California, San Diego

PostPosted: Wed Sep 08, 2004 10:51 pm    Post subject: Reply with quote

Hmmm...
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Poobah
Dolphin Glider


Joined: 09 Jan 2004
Posts: 696
Location: California, San Diego

PostPosted: Wed Sep 08, 2004 11:29 pm    Post subject: Reply with quote

I deviate...
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Poobah
Dolphin Glider


Joined: 09 Jan 2004
Posts: 696
Location: California, San Diego

PostPosted: Thu Oct 07, 2004 12:58 am    Post subject: Delta Sled Reply with quote

Never mind.
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RoyStewart



Joined: 04 Jul 2004
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Location: Bay of Plenty, New Zealand

PostPosted: Sat Oct 16, 2004 5:11 pm    Post subject: Reply with quote

Can you draw what you are planning? If you want to maximise flex then cross beams won't hurt as they won't stop the board from flexing. A tapered profile on the other hand (which you will get with a flat deck and a curved bottom) will reduce flex in the middle of the board. Apart from this the most important thing for flexibility is to have a relatively thin board. A timber Paipo will have to be an inch thick or less if it is going to be noticeably flexible.
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