Has anyone successfully made their own fins to fit the FCSII boxes? Not talking twin tabs as I know they work with screws. I'm talking made so they pop in and out as the box is designed.
mako224 wrote: Has anyone successfully made their own fins to fit the FCSII boxes?
I was considering making a FCS2 fin for my cousin, but have no FCS2 fins or boards with fcs2 plugs to fondle and use for test fitting
However I think I will make a fcs1 fin with much wider tabs to spread the load, which can still be used in an fcs2 receptacle employing the grub screws, and also fit into Probox, which I use.
10TH or so home hade fins. !st fins I used balsa but didn't glass them good enough and Snap off they came.
Since then I have made epoxy panels out of cloth, (I think this type of composite is refered to as Micarta). Works prety good but after surfing them for 6 months they started to permanantly deform at the tips. I didnt add any additional glass to them after they were shaped therefore the micarta composite could not withstand the repeated stress so the tips of the fins bent inward. I made about 5 tp 8 sets of fins out of that material, then I started using 5 layered baltic birch.
This is my 2nd par using this plywood and I have to say that I think I am finally begining to be able to foil BOTH fins the same. I see that there is some minor differences between the outermost ply layer in the center, but negligable.
I weighed both fins and the difference in 0.4grams, but well see after I glass them and mold the future base.
What do you think?
I also do my fins like that. Wood core and fibers outside. Just be aware that there is a point load where the fin enters the board. Make sure that some strong fibers pass through this section. I would recommend to make the wood core myself. So you can drag a layer of carbon, basalt or glass through this area (The red highlighted layer in my upload). Then you can apply a layer of veneer from the outside (marked in green) and then form the profile and then laminate everything with glass fibers.
See "robiegle" on u-tube
Nothing fancy. First glass on’s I’ve done in years. The process brought back a few things I had forgotten. Like why you always put glass on the flat side of wooden side bites just a tad bigger than your wooden fin.
On u-tube " robiegle" I explain how I make them.
Robiegle, I actually add 5 layers of 4oz fiberglass to the fins, 2 on the inside and 3 on the outside face. I extend it down into the tab, then I mould the base with cant into that wood tab & glass. It works pretty good so far as I havent had any break.
How do those fins in the last picture work? They look like they would be a good trailer fin with a twin setup.
I made one similar to that one, specifically for use as a trailer fin with twin fins. I think that the high aspect ratio of that type of fin as a trailer works great. It gives the board just enough hold so that you can realy crank out a bottom turn, or whatever without the tail sliding out. Those nubster fins that are sold for that purpose are, in my opinion garbage. I used one once and it felt like a brick was tied to my board.
The fins I call TANTO, like the japanese short sword. They fit only in boards with three plugs (I always put one in between the two regular ones). Like this I can make fins with a very narrow base and I can shift them by one plug. I made them for my quad board and I must say, they don't work really good. The FCS K2.1 quad fins, or the Split Keels I prefer...
But I like to try different things.
erichaha, I Really like that sharky profile with added base.
Robiegle, I've made a lot of fins, and just learned a lot from your videos, techniques I will use once my current panel is used up, Thanks.
I'm also fairly adamant about a very tight fit inside the finbox of the chosen fin system.
Your canted sanding blocks make too much sense.
My most recent method for attempting a perfect fit of a rail fin to fit Probox 8 degree insert , included a tablesaw with a zero clearance insert, and a taller fence to hold the flat side of the fin tightly against.
I've had a lot of fun with this twin sized fin, with a significantly sized and more raked trailer fin to tame the twitch.