im shaping my first board…its a 6’4" thruster with a single concave out the tail…i am not expecting this board to be perfect by any means and i have done some searching on “canting” futures and i understand that futures have a built in cant from the base of the fin. i also understand that futures are not necessarily meant to be placed at any degree other than flush to the finish of the board due to the fact that this can weaken its integrity…my question is that if i have the fins set flush to the concave of the board, does actually work better for a single cocave design to have the cant at a lesser degree? i have read arguments on how futures are flawed in this way…like i said i dont expect this board to be perfect and i realize that i might be asking a question out of my league because i am a newbie…i was just curious for shaping my next boards…
Recently I had a board with single concave and probox fin boxes.
This time the glassers placed the boxes a little too flush within the concave and with my
usual 0degree cant insert the fins were pointing slightly inward towards the stringer.
I could have lived with this, but put in some 4degree cant inserts and this gave me something
like a resultant 2degree cant. Its not Zero degrees, but this I can live with a little better than
the -2 degree inward cant.
I’m not sure what your question is??
Are you asking for whether your board at close to Zero degrees cant on the fins because the boxes
are angled to the concave is the best? or… are you asking to get something closer to the built
in cant of the fins?? Are are you asking for someone to help make up your mind between the two?
My feeling is that you can have both with Probox, however a single concave provides enough
lift that Zero degrees of cant is either good enough or something you should desire.
Cant == lift == bottom concave.
In addition if your still sold on Futures, I’ve got quite a few pairs of plastic F6(discontinued) and some
FAM, FAM2 that I am looking to get rid of–All 100% Futures. Also Probox has quite a few Futures templates on the probox
site, plastic and glass that go with the probox system.
thanks for the feedback and link about neutral handling…the art of shaping is definately harder than it looks…i think you answered my question by stating “a single concave provides enough
lift that Zero degrees of cant is either good enough or something you should desire”…im gonna go with that and just hows it pans out…its my first board anyways i dont expect it to even be satisfactory even though im trying really hard…also thanks for the offer on the fins but i got plenty lying around the house…ill let ya know how the board turns out…
where did you hear this? IIRC, even the futures install vid shows the installer adding & measuring cant
the boxes should be just below flush of the foam, otherswise you won’t be able to properly cap the install. unless you’re talking a really extreme concave, between the built in cant of the fins and below flush boxes you should be able to easily net 5-7 degrees cant.
Off the record…according to reps, extra cant is doable, as mentioned, by making the recess a tiny bit deeper, so that the high side of the box flange is level with the bottom surface but the tilted side is lower. This has its limits because you dont want a deep section of brittle resin either on top or beneath the flange.
Maybe reinforce that resin space with a sliver of glass.