hi, does anybody now the radius(es) of rails(hard, mid, soft/nose, mid, tail) also on what depends the tickness of nose and tail?
Geert: Take a look at the drawings on Bruce Jone’s site, they may be what you are looking for. www.brucejones.com. Try the “Board Room” and then select the board shape of your choice, he has some nice outlines with corresponding cross sectional views. Hope it helps. TS > hi, does anybody now the radius(es) of rails(hard, mid, soft/nose, mid, > tail) also on what depends the tickness of nose and tail?
Lots of stuff goes into rail performance. For mid-board rails, you can tuck them under for a glidey ride, or cut the bottom after forming a round rail. That forms a lower edge for performance boards. Generally, designers refer to the “rail line” where the rail turns vertical. Most mid-board rail lines are between .75" and 1.1" inches off the bottom glass. But whether a particular rail height is hard or soft depends on the thickness of the board and the surfer weight. When planning and shaping your rails make sure to subtract foam radius to allow for final glass thickness. Soft lower rails provide lift on a wall where water flows across the rail. Hard lower rails force the surfer to trim forward and beachward from a wall, projecting lots of speed. My favorite finished rail is a .9" raidus quarter cylinder. This compromise allows just enough bite for performance, and just enough lift to hold in the pit wall. I ride mostly mid size boards, and weigh 175 lbs. Tail rails should be low and hard for performance. IMHO, Nostalgia drives the softer tail rails. Soft tail rails add drag and hold the tail in the wave. There are other ways to hold the tail in the wave which won’t inhibit performance. If you must shape soft tail rails, they should still be low and somewhat hard, tucked under an inch or two.>>> hi, does anybody now the radius(es) of rails(hard, mid, soft/nose, mid, > tail) also on what depends the tickness of nose and tail?