Joined: Sat Nov 05, 2005 4:15 pm Posts: 372 Location: The land of MO (SLC)
Just to answer a few questions...
Also, I intend to contact you guys who mentioned your experience with composites. I do have a bunch of questions for you. Especially about S-glass and vacuum infusion.
My pro-active $0.02.
Vacuum infusion (RTM, VARTM, etc...) - don't bother, it's cool to watch and sounds fancy, but produces inferior products to other methods. You will get far better results if you pony up and use a nice pre-impregnated (prepreg) quad glass. More $$ but much better resin distrubution and lower void content. As you build the board do a 10-20 minute "vacuum debulk" after you add the first 2 layers of glass to the base with edges (and rubber damper, lower carbon stingers, etc..., don't know how fancy you are getting), then place your core and what not, another 2 layers of glass, topsheet etc...and another debulk for 10-20 min, If you can press it while it is still under vacuum more power to ya. At the very least use a traditional wet lay-up with the vacuum debulks. Vacuum infusion is just not worth the effort. I have wasted too much of my time playing with that train-wreck, and volume production with vacuum infusion would be a nightmare. If you really want to get fancy "pretensioned, precured s-glass", nuff said, and never under-estimate the power of a good high burst modulus wood core like sugar maple or hua birch. Using a foam core to save weight is silly, wood is light and durable and transfers shear so much better = better camber retention & snap and a board that rides like new for multiple seasons.
***HINT*** If you have acces to a good library with many journals, you need to read the December 2004 "Composites Technology" issue, page 44. Pay special attention to an advertisement in the lower left corner of page 6 as well.
Keep us posted.
_________________ "When the going gets weird, the weird turn pro" HST
Joined: Fri Nov 12, 2004 1:43 pm Posts: 439 Location: Western Washington
Have not sent the info yet, but will. As for board shapes, take a close look at swallowtails too, and look up the Dupraz D1, as well as the Pogo Longboard snowboard. The last two are a look at the do it all board, swallowtails is where snowboarding started in the '70's.
_________________ Find out just what any people will quietly submit to and you have the exact measure of the injustice and wrong which will be imposed on them (Frederick Douglass)