Articles
   
       
       
Pics/Video
   
       
       
Shop
Search
 
 
 
 
 
Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
WAKE WORLD HOME
Email Password
Go Back   WakeWorld > >> Wakeboarding Discussion Archives > Archive through November 07, 2008

Share 
Reply
 
Thread Tools Display Modes
Old    Jeremy Byrom (wakerider111)      Join Date: Jul 2006       10-01-2008, 1:12 PM Reply   
I just barely thought of this idea. Hopefully it does not sound too crazy. I am sure that it will be more expensive and difficult to make though.

problem with current designs: I have seen fins crack and break where the screws go through the fins because the material is soo much thinner there

I was thinking that the screws could instead become shafts that are A PART of the fin. They could be machined as all one piece with screw threads on the top. The fin's shafts could be inserted up through the bottom of the board and then bolts could secure it from on top.

the attached illustration: i did a quick picture to illustrate this. I know the fin is huge and looks more like an old school fin, but just look at it for the idea. I colored the fin blue to emphasize that it and the shafts are all ONE piece. and the two little eyeball-looking things are the bolts up top.

Upload

advantages i see:
1. the fins would be less likely to break without pre-made holes weakening the body
2. with this design more shallower fin depths that were thought to be unachievable could be made, because the bolt no longer has to screw into the fin. Thinner fins could even be made (ouch)
3. this is more of re-emphasis of 1 AND 2. the fins would be more slider friendly

disadvantages i see:
1. the bolt securing the fin on the top of the board would have to be bigger, potentially creating a bit of an eye-sore
2. more expensive and harder to make
3. less universal of a fin design. it would be more specific to one brand of board


tell me what you think?

(disclaimer: i am no expert when it comes to manufacturing)
Old    derek (to_blind)      Join Date: Mar 2007       10-01-2008, 1:44 PM Reply   
great idea man, its a wonder it hasn't been done already.
Old    C.I.E. J-Rod (jarrod)      Join Date: May 2003       10-01-2008, 1:49 PM Reply   
It kind of has been done. There may be more examples, but the CWB Prodigy fins come to mind.

These fins had threaded shafts sitting on top of them. Short screws went through the board and into the threaded shaft. A little different that what you are suggesting, but close.
Old    Ben C (dadthedriver)      Join Date: Jul 2004       10-01-2008, 2:07 PM Reply   
Take off the fins and learn to edge.
Old    Dan Noonan (depswa)      Join Date: Nov 2000       10-01-2008, 2:09 PM Reply   
I'd think if you hit something that would break a normal fin off with your fins it could damage the board quite a bit more. I'd rather replace fins than a board.
Old    Lyle Ramsdell (sunsport)      Join Date: Sep 2002       10-01-2008, 2:35 PM Reply   
Or the whole world could start using CDI fins. Good luck breaking them. The 7 years we have been in business we have only seen one break. After analyzing it we determined it was a flaw in the casting.

Actually Jeremy we have looked at this style before and with plastic fins it isn't too bad of an idea. With the aluminum fins and the wider base of our fins it is not needed. Plus the wider bases helps keep the board from getting damaged as Dan pointed out.

Skiing made me board,
Lyle
Chrome Dome
www.cdifins.com

(Message edited by sunsport on October 01, 2008)
Old    Josh Busby (joshbuzz)      Join Date: Sep 2007       10-01-2008, 11:06 PM Reply   
Lyle would those fins fit on a SS? I'm getting some of the new fins from SS that aren't supposed to slip, but like the look of the C. Wright fin
Old    Lyle Ramsdell (sunsport)      Join Date: Sep 2002       10-07-2008, 2:21 PM Reply   
Hey Josh,
You know Slingshot was using a non-standard hole size last year. Not sure if they standardized it to 1/4" or not. Do you know what size the holes are on your board and the spacing of them?

Skiing made me board,
Lyle
Chrome Dome
www.cdifins.com
Old    Mellow Man (mellowman)      Join Date: Jul 2007       10-07-2008, 3:24 PM Reply   
Ride finless!
Old    Andrew (hydrophile)      Join Date: Aug 2007       10-07-2008, 4:28 PM Reply   
The screws are steel, and the fins are usually plastic or aluminum. In your design, the whole fin would have to be steel, making it heavier.

Also, even though it is one piece, you would have stress concentrations where the protrusions meet the bigger part of the fin. Now, the protrusions will snap off instead of having the screw split the fin's hole open. It might not be stronger, just fail in a different way.
Old    Stephen Higgins (srh00z)      Join Date: Jun 2003       10-07-2008, 6:21 PM Reply   
I have a set of fins like Jeremy is describing. I don't know what board they came from, but somebody in our crew bought a Cassette wakeskate and somebody had retrofit these fins on it. They now are on one of the wakesurfers. The fins were big, so I did some custom shaping on them. So, it has been done before, and they work fine for our application, but we aren't hitting sliders on a wakesurfer either.
Old    Jon (jon4pres)      Join Date: May 2004       10-07-2008, 7:35 PM Reply   
If you make the fins to strong then you are going to be breaking boards instead of fins. I see that as a much bigger problem.
Old    John Gardner (roverjohn)      Join Date: Dec 2007       10-09-2008, 8:26 AM Reply   
Damn fine rendering of a fin with MSPaint but why are there two Penn State helmets floating over it?

Reply
Share 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -7. The time now is 5:59 AM.

Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
Wake World Home

 

© 2012 eWake, Inc.    
Advertise    |    Contact    |    Terms of Use    |    Privacy Policy    |    Report Abuse    |    Conduct    |    About Us