I picked up a used 'china rip off' all carbon surf foil (based on the lift foil template) just for pure curiosity to play around on a prone board-have sup foiling down. The rear wing fits seamlessly facing down but I had always assumed the rear wing goes up - which I did manage to fit it facing up with some new screws...although not quite as neat alignment.

80% of the pics I looked at online has the front wing down/rear wing up BUT there was a couple with the rear wing down.

Any thoughts?

DavidJohn said..
Nice rug..

Ha! Yes. It does have that 'keys in the bowl/swingers club's vibe.

Suits the man shed well.....

Try it and see. If you can't tell then it doesn't matter.

If it fits seamlessly with tips down then that is probably the way it is designed to go.

Heaps of foils do.

Put a level on the rear wing. Figure out which way it's creating lift downward. Then you got it right.

foilSURFmachines said..
Put a level on the rear wing. Figure out which way it's creating lift downward. Then you got it right.

Thanks fSm for that suggestion. I may be a bit special but Im not sure what you mean....

warwickl said..
1mm aoa makes a huge difference.
The test is where you need to put your back leg for lift off and comfort on the fly.
If to far one way or the other for your comfort stance then adjust aoa.
Works for me.

And thanks warwickl. What does the "aoa" acronym mean? Also, back foot usually doesn't move - once up? Im not sure what you mean....again, I may be a bit special....

The rear stab on a foil should have some small amount of angle to it that makes it want to move downward When travelling through the water. This in turn makes the front wing want to go upward. (A upward AOA... angle of attack)

So do like FoilSupMachine says it should help you find the correct way for your foil.

AOA angle of attack. You might want to look this up...

90% of the foils I have seen have the rear stabilizer wing pointing down.