gmb13 wrote: ↑
Wed Aug 16, 2017 6:38 pm
...When you switch out front wings (for example Zeeko Freeride wing to Speed wing) you will notice no huge amount of change in roll stability. But if you reduce the angle of the tailplane (shim) you will have a major change.
That's interesting, but I don't understand the reason at all. Can you explain and say which way the angle of the stabiliser improves roll stability, i.e. more or less tailplane angle of attack?
Incidentally (sic), one thing I noticed when switching from the Zeeko Freeride W&G (with anhedral) to the Carver (flat) is better pitch stability, and I attribute it not to its wider chord but to its different angle of attack relative to the tailplane. The board also rides flatter relative to water surface than with the definitely Freeride wing (=> nose up stance).
I want to experiment changing the tailplane angle with the Freeride, will a plastic shim do, or a wedge be better. I wish all the manufacturers offered the option to change the angle of attack of front and back wings to suit preferences and conditions. I did so when I was learning with the Cab Double Agent, by increasing the stab angle of attack with a shim in order to reduce the pitch up tendency leading to porpoising. When the yoyoing was under control, I removed the shim after I noticed I needed too much back foot pressure when edging hard to windward.