Extra Tuning to your AC-1 021| Spacers!

Do you want to give an extra grunt to your AC-1 021? It is possible with a 5 min action to each sail size.

The change will give you more drive and stability and you will feel immediately a new boost in acceleration.

The only thing you need to do, is to take the sail bag, take out the spacers from the cap of the sail bag. The spacers are found in 2 sizes. 2mm the small one, 5mm the big one. There should be more than enough to complete this PWA super tuning,

Use only the big 5mm spacer. There is no need for the other small spacers.

What to do with these spacers?

The spacers need to be placed on the battens behind the cams. Between the sail body and the mast there is a space for the cam to act as a spacer itself. So, if you place also a 5mm spacer in that area, the pressure between the sail body and the mast will increase.  If the pressure will increase, the power and stability of the profile will increase donating more power and drive.

This does not mean that you add to an infinite number of spacers. The spacers added need to be tested and need to be calibrated as there is a limit. If you go over the limit, rotation could worsen, the leach could close, the weight could increase in terms of downforce push.

How do we put the spacers, how many do we need to put and on which cams?

1. Unroll the sail.
2. Take out the cams from the batten.
3. For the bottom cam it’s easier to take it out entering with your hand from the boom opening and rotating the cam up.
4. Insert the 5mm spacers on the batten as shown on the table below.
5. 5 Place back the cams on the batten.
6. Rig the sail and go out to fell the new power and drive.



7. Rig the sail and go out to fell the new power and drive.