Anything you can tell me about chines

General Discussion
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chines

Here’s a photo of a Wilderness hull with chines. Wilderness surfboards in Santa Barbara, still there I think. Can’t say I’ve seen one ridden, but though you might find it interesting. It may work as you’ve suggested.

seedy

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Hello Newschoolblue ,

Out here on the west coast Chine rails are very popular on long boards. Walden, Stewart, and Becker Surfboards all use chines on the bottoms of their boards. Without photos many of the post so far are a little complex. Any one out there care to give us a lesson using photos and or diagrams.

I’ve got a good idea how to shape a chine using masking tape as a guide…any teachers willing to walk us through the process of shaping a chine rail?

Thanks

Ray

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Quote:
Quote:

chines

Here’s a photo of a Wilderness hull with chines. Wilderness surfboards in Santa Barbara, still there I think. Can’t say I’ve seen one ridden, but though you might find it interesting. It may work as you’ve suggested.

seedy

(thanks, “seedy” [get well soon , mate !] )

here it is …

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Me old chine is a good mate…

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…M.P. , is that YOU ???

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Here’s a couple pics of chines. 1st one is my Greenough style edge board in the shaping process (bottom of board). Second one is GG carrying a sailboard showing the bottom. Third is bottom of my board glassed w/ chine built out with microballons/resin to be ground to very hard edge (flat bottom has 1/8 deep step to chine). This makes super clean water release and if chine angled enough, the water doesn’nt even “see” the chine (no drag) when planning. When lay it over to turn, chine comes into effect and “gripes the road.”



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try this link for more of the same discussion:

http://www.swaylocks.com/forum/gforum.cgi?post=269063;#269063

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Here’s how I understand the chines on a Greenough “edge” board. The flat(concave) area between the chines gives a narrow planing area distinctly separate from the round “eggy” rails. You plane on the central area and then bank over onto the rails. The sharp edges of the chines “break” or separates the water as it flows/sheets off the bottom instead of allowing it to remain “attached” to the board and drag as it wraps/adheres around the rail. Especially noticeable when banked over. This break in the flow reduces drag(and the spray). Edge of chine is sharp. Seems to be extra lift created by this setup.

The edge board also has “runners” about 24" long that are mounted right on the edge of the chine. Mine are 1/2" tall and further the “break” by actually deflecting the water as it hits the edge/runner. You can see where they were glued on below.

Lots of flex and twist involved so I am not sure how this applies to surfboards.

water adhering and wrapping around rail on non-chine board.

Hard to see but spray breaks at the chine which is where white rails meet red bottom

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who said that : )

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who said that : )

ummm…

ONE of these three guys [I’m guessing it was one of the two on the left , actually !]

…you looked different without your porn star mo in those days eh ?!