I am building an eps-epoxy longboard with 50-50 rails. 9’x21.5" with 14.5" round tail and about 2.75" thick.
I was thinking of using the McKee formula for Futures quad placement, but what about toe in?
Any other suggestions welcome.
When I did my quad HP longboard I looked at the Mckee formulas and it seemed like he was spreading the fins too far apart the placement that I used is what Rocky Mckinnon is using on his quad longboards
rear fins 8" from tail to rear of fin
the back of the rear fins are 3" from the stringer with the front 1/8" closer to the stringer
front fins 16" from tail to the rear of the fin
the back of the fins are 6" from the stringer and the front is 1/4" closer to the stringer
The board is 9'1" x 22" the tail at is 11 1/4" @ 12"
I have found this set up to work really well, I also used Probox so I can slide the fins forward and back 1/2". Hope this helps
