highline rider
Miki Dora status
Reged: 01/31/03
Posts: 4241
Loc: Orange County
|
|
i wanna try a tunnel fin just for shits and giggles. right now i am feeling allergic to both hardwork and check writing. what i ahve is a bunch of cloth scraps and some resin. heres my thoughts -- put three layers of glass over the glass jar, let harden. break off fiberglass. keep adding layers until its all good. do i put the foil along the inside or outside of the tunnel fin?
--------------------
my real name is david. and the oc rulez all otha's are foolz.
|
Who's Your Daddy
Tom Curren status
Reged: 01/10/02
Posts: 12771
Loc: Carlsbad, California
|
|
First you have to shape yourself a 15-foot kayak to use it on. 
--------------------
This space available for rent
|
highline rider
Miki Dora status
Reged: 01/31/03
Posts: 4241
Loc: Orange County
|
|
im going opposite actually, 5'.
--------------------
my real name is david. and the oc rulez all otha's are foolz.
|
Slow
Nep status
Reged: 09/14/04
Posts: 612
Loc: Encinitas, CA, USA, NA, Earth
|
|
When you finish, please post pics and a ride review. I'm very interested in seeing that. Are you also going to have the keel, or only the tunnel?
--------------------
Quote:
ain't easy being slow, huh?
cowabunga
rg
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
Hello David, you have to foil the outside of the fin. You can either foil the insideof the fin or leave it flat. Both ways work very well. The difference is that a tunnel which is flat on the inside will direct the water flow slightly more towards the bottom than a double foiled tunnel, so should be set up at a slightly different angle. The angle in relation to the bottom is critical. I will do you a drawing and post it on here to explain. 
BTW, I have a 7'5" with a tunnel which goes very well so that 'kayak' talk is all nonsense.
--------------------
Wooden Power Surfboards and tunnel fins
|
Who's Your Daddy
Tom Curren status
Reged: 01/10/02
Posts: 12771
Loc: Carlsbad, California
|
|
Quote:
BTW, I have a 7'5" with a tunnel which goes very well so that 'kayak' talk is all nonsense.
But can you ride it, with your feet straddling the stringer while facing forward? Talk about high performance surfing!
--------------------
This space available for rent
|
Anonymous
Unregistered
|
|
I've got you're instant tunnel fin right here, jerky. Grab a 7" diameter piece of scrap PVC pipe and cut it in half 
|
LeeD
Kelly Slater status
Reged: 06/26/03
Posts: 8203
Loc: Berkeley,CA
|
|
 Is the tunnel fin, or anyone's version of same, really all that different from those curved fins everyone is stoked about?
--------------------
LeeD
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
That's old news Mister, cos that's exactly how I have been making mine (in 4, 6, 8, and 10 inch diameter.
--------------------
Wooden Power Surfboards and tunnel fins
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
Yes, because the curved fins have toe in, two fin tips, they do not enclose the water flow and they have much less horizontal area. There are some similarities though.
--------------------
Wooden Power Surfboards and tunnel fins
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
If you would like to know any more about how the angle of the tunnel in relation to the bottom affects the way a board rides then I can explain it for you.
--------------------
Wooden Power Surfboards and tunnel fins
|
Anonymous
Unregistered
|
|
I guess that was a good guess then. Seems like the easiest way to get a perfect 1/2 circle
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
Yes, except that sometimes those pipes aren't exactly round!
--------------------
Wooden Power Surfboards and tunnel fins
Edited by RoyStewart (10/26/04 05:54 PM)
|
Anonymous
Unregistered
|
|
Yes, just as lumber and blanks are often warped, bread stale, cars lemons, film exposed, lightbulbs defective, seams undone, milk expired, faucets and roofs leaky, speakers blown, tires popped, wine corked, pens dry, garage door-opener batteries dead, macaroni too al dente...
|
RoyStewart
Michael Peterson status
Reged: 08/12/04
Posts: 2330
Loc: Bay of Plenty, New Zealand
|
|
But not hulls leaky, sails rotten, compasses maladjusted, anchors too small, skippers seasick, crew drunk, charts out of date or halyards tangled?
--------------------
Wooden Power Surfboards and tunnel fins
|
Rob Olliges
Michael Peterson status
Reged: 03/27/03
Posts: 2576
Loc: Retirement home
|
|
Quote:
But not hulls leaky, sails rotten, compasses maladjusted, anchors too small, skippers seasick, crew drunk, charts out of date or halyards tangled?
or boat too long for a beach landing
--------------------
Happiness comes in waves.
|
Anonymous
Unregistered
|
|
Good one R.O. I was struggling for a comeback
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
