I've recently purchased my first board with a US fin box. The fin that came with the board is a tight fit, but not too bad. It fits with a bit of force but, I also have another new US fin that seems to be an even tighter fit. So tight I'm not even going to attempt to fit it. Is this normal and if so how do I fix it? I assume the correct method to fit a US fin is - Rear slots down and back, fin rotated forward until flush with bottom of board, screw tightened? Should the head of the screw protrude above planing area? I guess so. Excuse my ignorance

Cheers Jman. The new fin (base) looks to be about 250-500um thicker than the stock Drake fin (base) the board came with.... but havn't measured it so my eye could be way off. Will give your method a go and let you know how it went. Thanks for the reply!

ejmack said...

Cheers Jman. The new fin (base) looks to be about 250-500um thicker than the stock Drake fin (base) the board came with.... but havn't measured it so my eye could be way off. Will give your method a go and let you know how it went. Thanks for the reply!

You can do 250 - 500 um by eye?



Anyway, seriously, I find most are loose.... I shim with shirt box clear plastic

Yeah, I was a bit surprised it required so much sanding. Was the main reason I was asking if this is normal for a US fin "base" to be so thick..... It is a Select fin by the way, a 25cm WaveFreestyle.

Just replied to you via PM Windrider.... but yeah, after a little more sanding it now fits nice and flush with the bottom of the board. A firm fit but easy enough to remove. I was quite worried while sanding mine thinking I must be doing something wrong if it needed such a large amount to be removed. Good to know I went about it the right way!

thanks guys!