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#2910860 - 02/08/19 03:45 PM Fin distance to rail
patrolman Offline
Miki Dora status
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Registered: 07/28/05
Posts: 4334
All other things being equal- toe, cant, distance from tail- what effect does moving a fin closer to or further from the rail have?

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#2910892 - 02/08/19 04:04 PM Re: Fin distance to rail [Re: patrolman]
Aruka Online   content
Miki Dora status
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Registered: 02/23/10
Posts: 5269
Loc: PNW
The first board I ever made I screwed up the using the FCS fusion jig and the fin boxes ended up being a bit further from the rail than is "standard". This tightened up the thruster fin cluster and made for a pretty loose ride. It was a pretty low rockered board with a widish round tail so it probably would have been a fast and loose ride anyways but to me it felt like it didn't hold a rail in anything juicy as well as it may have with side fins closer to the rail. It was actually pretty fun in crappy waves but probably would have been more versatile with fins closer to the rail.

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#2911002 - 02/08/19 07:40 PM Re: Fin distance to rail [Re: patrolman]
need 4 speed Offline
Miki Dora status
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Registered: 11/01/03
Posts: 4388
Loc: SoCal
What distance are you running ? I asked gs the other day and 1 1/4' was the approximate number
_________________________
NOT THAT KIND

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#2911025 - 02/08/19 08:29 PM Re: Fin distance to rail [Re: need 4 speed]
need 4 speed Offline
Miki Dora status
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Registered: 11/01/03
Posts: 4388
Loc: SoCal
These are from a SK twinzer. Stu likes the fin placement on that board, a little more inboard



_________________________
NOT THAT KIND

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#2911033 - 02/08/19 09:21 PM Re: Fin distance to rail [Re: need 4 speed]
sdsurfrat Offline
Michael Peterson status
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Registered: 06/02/08
Posts: 2002
Originally Posted By: need 4 speed
These are from a SK twinzer. Stu likes the fin placement on that board, a little more inboard






Now measure from the Shapers dot, or back of the main fin, to the end of the board

shocked

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#2911045 - 02/08/19 11:09 PM Re: Fin distance to rail [Re: patrolman]
Spinafex Offline
Legend (inyourownmind)
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Registered: 09/10/12
Posts: 342
Originally Posted By: patrolman
All other things being equal- toe, cant, distance from tail- what effect does moving a fin closer to or further from the rail have?


Shapers usually sit their fronts as close to the rail as is comfortable to sand fin plugs - about 1 1/2". Given this constant (and cant and distance from tail) - the shape of the cluster relative to tail width/shape and fin size is what affects performance.

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