Select to expand quoteTrying to understand what stabs to use when (Armstrong 232, HA195, Surf 205 stabs with 1550V2 and MA1000) for winging.
I understood
1. Shiming, being small and thin all add to glide (good if you can control pitch).
2. Stab pushes down
So to get up in light winds, and pump waves when flagging wing I'm thinking I want max glide and least down force so always go smallest stab shimmed. Or is there more to it?
Select to expand quotepatronus said..
So to get up in light winds, and pump waves when flagging wing I'm thinking I want max glide and least down force so always go smallest stab shimmed. Or is there more to it?
I think you should tune the stab size and angle so that the foot pressure balance remains fairly constant at low and high speeds. If your foil is setup well you don't need to change settings for light winds or waves. It should handle it all.
On a balanced setup the stab size has the following effect in my experience:
- A smaller stab may require shimming to increase the downforce. It is less pitch pitch but easier to pump and perhaps a bit faster
- A larger stab may require shimming to decrease the downforce. It is more pitch stable but harder to pump and perhaps a bit slower
Select to expand quotesimonp65 said..patronus said..
So to get up in light winds, and pump waves when flagging wing I'm thinking I want max glide and least down force so always go smallest stab shimmed. Or is there more to it?
I think you should tune the stab size and angle so that the foot pressure balance remains fairly constant at low and high speeds. If your foil is setup well you don't need to change settings for light winds or waves. It should handle it all.
On a balanced setup the stab size has the following effect in my experience:
- A smaller stab may require shimming to increase the downforce. It is less pitch pitch but easier to pump and perhaps a bit faster
- A larger stab may require shimming to decrease the downforce. It is more pitch stable but harder to pump and perhaps a bit slower
I read on this forum that for stabs with curved surfaces they turn from pushing down to pushing up if AoA is greater than 6 degrees, so wondered if in light winds and trying to pump/bounce the board out of the water that a bigger stab helps get up at least?
