MC-Scow Tuning Guides
In this article, we capture the MC-Scow tuning guide for North Sails, which has some good go-fast techniques.
North Sails (click for full guide)
SETTING UP YOUR MAST
Please install your sidestay turnbuckles in the forward hole of your chainplates. Tighten the bolts with a 7/16” wrench. Have the bottom of the spar held down on the mast step plate while you walk the spar up. Hook up the forestay in the aft cut out of the bow plate. Once your mast is stepped into position take a 50ft. steel tape measure and attach it to the shackle on the wire main halyard. Pull your rope halyard so that the tape goes all the way to the top of the spar.
Be sure you latch the ball into the halyard latch at the top of the spar. Pull down on your halyard so that you know it is locked in place. Measure down to the center portion of the deck at the stern. This measurement must be taken from the point where the hull and deck meet. The fast measurement for your Z MAX and or ZAP Mainsail is 28’ 3”. The base measurement for the Z-1 Radial is 28’ 3.5”. Now you are ready to set your sidestays.
After you have set your mast rake at 28’ 3” you will be ready to adjust your sidestay tension. You want your sidestays to be taut. You want to just finger tighten your stays. If you use a wrench to further tighten them the rig is too tight.