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Where to place sliders (fin boxes) on wooden board

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wil
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Where to place sliders (fin boxes) on wooden board

Postby wil » Mon Jun 29, 2015 11:31 pm

I am trying to find out where to insert the fin boxes (sliders) 30 cm long on my Paulownia boad. The dimensions of the board are 150 x 52 cm. I have a moderate amount of rocker starting at 1m from the back of the board. My plate holes are 165 x 90 mm so there is a good amount of adjustment.

I also want to install a foot strap insert for my Predator foot hook. where should I place the insert measuring from the back of the board.

I am a newbie and my foil is an aluminium strut and base plate with an open u shaped fuselage which will take a standard square alu profile for attachment of the wings.
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Hawaiis
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Re: Where to place sliders (fin boxes) on wooden board

Postby Hawaiis » Tue Jun 30, 2015 12:00 am

It depends on the type of wings you put on and where you put the wings. If you use typical locations for your typical wings. I would put it 50mm from the rear edge. Your tracks are 300mm minus the 165mm plate, you will have 135mm of sliding adjustment.

tkettlepoint
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Re: Where to place sliders (fin boxes) on wooden board

Postby tkettlepoint » Tue Jun 30, 2015 2:09 am

rule of thumb for the most part is 12" from the tail to center of mast is a good starting point.

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Re: Where to place sliders (fin boxes) on wooden board

Postby jplmain » Tue Jun 30, 2015 2:32 am

Rule of thumb is were do like to put your back foot strap or back foot. Thus you can not tell till we see your front fin. Front fin is balanced between your two feet according how big your fin is. And then how may your center mast be on your a back foot, center, behind, forward. Do not use a rule of thumb of 12 inches. That is for one foil were many foils have there own rule of thumb.

wil
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Re: Where to place sliders (fin boxes) on wooden board

Postby wil » Tue Jun 30, 2015 2:57 am

what happens if the foil attachment is very close to the back of the board as suggested by Hawaiis. There is a reasonable amount of adjustment in the sliders say roughly 120 mm. I just want to be safe and put the sliders to give me enough adjustment forward and backwards for any type of wings I will put on later.

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Re: Where to place sliders (fin boxes) on wooden board

Postby Hawaiis » Tue Jun 30, 2015 4:08 am

Since your board is quite flat and short, you need to place it more rearward than regular boards.


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