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 :: 505 hull calibration :: (369 Reads)

Posted by Rudolph on Tuesday, March 24, 2009 - 10:09 AM

Getting your 505 to perform well on the racecourse requires a lot of attention to detail. Take the first step with this static (dry land) hull calibration worksheet and checklist recently updated (with pictures!) for RSA8520. Hull calibration; Mast and Rigging; Center board and rudder; and Sails make up the main focus points of a four part 505 tuning guide to be listed on the 505 site over the next couple of months. The first delivery, Hull Calibration, is available from the downloads section on this site. (On the main menu, click on 'Downloads', then 'Technical' and find the link to 'Hull Calibration'.)

While crewing on my own boat (Kyrwood 505 RSA8520) at the Nationals in Midmar 2008, I picked up on a number of setup issues on the boat which soon after became a much larger than anticipated calibration and setup project!

For example, at the nationals I noticed that the port and starboard jib sheeting setup was not equal - both inboard / outboard and fore / aft. This is confusing and a waste of time as one needs to compensate and adjust after each tack.

This observation prompted a general hull measurement exercise that led to a number of other hull symmetry discoveries and subsequent corrections.

The result is a more balanced hull and a symmetric setup allowing us to focus on the racing while having peace of mind over the equipment.

The boat should always be treated as a unit, but separating the work into four manageable parts allows you to improve the boat while not taking it off the water for too long. Sailing the boat should always be your first priority.

Please feel free to make comments. I'm particularly interested in feedback from the Rondar owners as some details will differ between the different manufacturers.

Rudolph
RSA8520 Denmark 2010

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