Kai lenny and backwards quads.

000

Duke status
Feb 20, 2003
26,520
8,063
113
glen winton claims to have invented the quad fin
 

000

Duke status
Feb 20, 2003
26,520
8,063
113
btw i changed my fin box placement, knowing i would improve it
had this 1698777012476.png

moved rear boxes an inch towards the rails. works much better, faster, looser.

also, ive tried using the fronts for rears, while using rears for fronts, in the 90s. stiffened it up. i used to tell people if they got a quad and it felt too loose, to switch fronts with rears
 

Clamsmasher

Michael Peterson status
Apr 22, 2013
1,864
939
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Nar
McKee wrote about bigguns at the back ages ago too.
Plus Murray Bourton has what he calls a twinzer which I closer to a backwards quad
 

One-Off

Tom Curren status
Jul 28, 2005
14,630
11,015
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33.8N - 118.4W
"...with a quad you really get the stability because there is less of a void between the fins..."

So move them closer together, say 1-1/2" or 1-1/8".....and you get...the twinzer.
I think the erBB twinzer afficionados would move the front fins back to reduce the "void" rahter than move the back fin forward.
 

Lowqi2

OTF status
Mar 17, 2013
278
409
63
a erbb'er sold me his board a few years ago, unknowingly, with quad rears in front boxes. it didn't work for him i guess:shrug:
 
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r32

Administrator
Staff member
Apr 1, 2005
18,356
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Cambria
Hasn't this been tried many times before? Now it's going to work though?