BoardOff is a Twin Tip kiteboard design tool in MS Excel 2007 that allow you produce 1:1 scale plans for multi-deck boards, produce templates for rocker table jigs, estiamte the weight of your board and get some insight into the felx profile of the board.
Version 1.3.11 Released 6-Sept 2011
Get the latest version of BoardOff Design Tool here. Enjoy!
Hello Matt,
ReplyDeleteMy name is Pedro and I´m writing to you from Portugal.
First I want to thank you for the information & the software that you putted available on your blogs for everyone. My honesty: THANK YOU.
But need to ask you for your help! I´m starting building my first kiteboard from a piece of "Airex C70" with 6mm. The board will have two layers (Lower+Main deck) with a total of 12mm of PVC foam. Ok my problem here is : I need to build my rocker table but I can´t figure out how to set the values on the boardOff! Could you give me a hand?
I saw you movies and i have the idea that you mentioned that we cant have smooth curves on boardOff on the boards layout,right?
Keep up your good work,
Pedro
Hi Pedro
DeleteThanks for your comment. I always like to hear from other baord builders and I really like to hear if someone's found the blogg and BoardOff useful, so thanks.
There's 2 type of rockers - continuous which is a segment of a circle and '2 stage' which used to splines (used 5 control points to create a more complex curve e.g more rocker at tips and flatter at middle). Use cell D13 to selct which one. D13=1 ->'2 stage' and D13=2 'Continuous'. For continuous the parameters for that curve are set in the 3 parameters in the section 'Continuous Rocker Input'. If you want a more complex rocker line choose '2 stage' and then select a template by set cell D14 to the template number (and then tweak the parameters to what you want). For both setups its critical to set the parameters in the Section 'Global Parameters' as the outer jigs vary according to how wide the table is. My table is 870mm wide (quite big) so I can have lots of room around the board to work.
To design a 2-stage rocker you set teh co-ordinates for the 5 control points. Points 1 -3 (top to bottom) set the control points for the first section (identical to the way the outline designer works). 'x' is the point of interest along the length of the board starting at the tip,'y' is input as the % of the top rocker (so that you can scuplt the shape you want and then 'concave' is the amount of concave at that point. If you change the length of the board then the existing templates will all be stretched to fit the new length.
This will make more sense if you select one of the templates and look at the charts on the right. The tope chart is the rocker jigs ( middle and side on the same chart) and the one below it shows the slope of the jigs. Where this slope line is kinked it means you rocker line is kinked and you should change the slope of the section as it approaches the point where its kinked.
If you haven't already, there is a new version that I put up a just a little while back and I seeme to remember there was a bug in the previous verion.
If you need more help feel free to email me at matt.ma@optusnet.com.au
I'll make a screen move at some point.
Hope this helps
Matt