First ride, Turbo fish fins.

[GWS]

JJR was nice enough to hook me up with these. I have been riding the board with the standard fins for some time and finally the turbos showed up. I put them in and paddled out itno 3 foot crappy point surf. They grip. There isn't as much tail release. The board tightens up a bit. This kind of surprised me. I have no clue what is happening with these curved fins, but when I put the G-crv fins on my FCS flyer, the board loosens up and it becomes easy for me to knock the fins out and take the board sideways. The curve on the FCS fins is FAR more radical than the curve on the fish fins. From riding the FCS version I was expecting the turbo fish fins to be similar. They're not. I have only ridden them one time at this point. But for now, what I think I will be doing is riding the standard fins in the smaller stuff and after it hits head high or above, switch to the turbos.

Once again, I have no idea why this is working the way it is working for me. I just don't get what is going on with the curved fins. I just know what it feels like.

 

[rolliges]

Thanks for the update, can't wait for mine.

 

[HBNative]

You put them in the wrong sides!

 

[Big Brother]

why no curved bonzer fins? they would work unreal.

 

[GWS]

You put them in the wrong sides!

lol! Not possible with lokbox. There is a slot on the inside of each fin that lines up with a plate that is screwed down on the inside of the box. The only way to swap sides would be to put the fins on backwards.

 

[000]

tried the curved ones. a little better in small surf. not as much difference as u would think. and they dont hold u high in small tubes at all. the concaved futures r insane though

 

[JJR]

You put them in the wrong sides!

lol! Not possible with lokbox. There is a slot on the inside of each fin that lines up with a plate that is screwed down on the inside of the box. The only way to swap sides would be to put the fins on backwards.

We call that "dummy proof"! <img src="/forum/images/graemlins/monkey.gif" alt="" />

BTW sharky, Mr. Jeff clark rode my 6'0" sunset fish this morning at a little reef behind the house. Head high sets and fairly lined up. He was flying all over the place. Big off the lips and some nice cutbacks as well. The highlight he said was the "fly down the line characteristics" that the fins had!! I watched while trying to nail down some kind of rythm myself, but it was not too be. Jeff won the heat! <img src="/forum/images/graemlins/rolleyes.gif" alt="" /> <img src="/forum/images/graemlins/doah.gif" alt="" />

Soon as he got out of the water, he called rainbow and ordered a set, then went to mitchs and picked up a blank. He's across the street at global glassing shaping his new 6'2" fish right now!

I guess he liked it. <img src="/forum/images/graemlins/computer.gif" alt="" />

 

[blakestah]

jjr, he is a really good surfer. When younger, he could pop 360s like no ones business, then turn around and do it switchstance!

The g-crv fins have too little rake - it dominates their feel much more than the curvature does.

The curve is for reducing "induced drag". On a turn, the water on the high pressure side of the fin wants to go around the tip to get to the low pressure side. This effect exists over the whole length of the fin, and is particularly bad on very raked fins with long tip. The curvature will force the water on the high pressure side (the inside) to go down the fin face, away from the tip. This reduces the normal movement that leads to high induced drag and tip eddies.

The curvature effects should be much more pronounced on fins with long tip chord lengths (like keel fins) than on fins with smaller tips and/or elliptical templates (like g-crv fins).