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Old 10-15-2007
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Mast head rig...

Quote:
Originally Posted by deniseO30 View Post
I think I'm getting better at tuning the rig on my boat. Last time I was out in winds over 10-15 mph the wheel wasn't much of a problem to handle. Back in June when the sheaves (not pulleys ) let go we were in about 25 mph wind and I was wrestling the wheel just before they let loose... Per CLUNK! (thank heavens for emergancy tiller handles )

It seems the very slightest adjustment on the backstay really makes big differances! Center of effort and all that stuff

This winter I really think I want to get the headstay shortened about an inch. The turnbuckle inside the furler is all the way in and the mast still has rake I want to ease out. It's keel stepped. the boom is starting to hit the bimmin top lately too. But when I let the backstay out too much the furler binds up.

Is a backstay adjuster a good idea?
A backstay adjuster is a good idea, but I don't think on your boat it'd have any effect on the mainsail draft, or the location of COE. Production boats like the ODay have fairly robust mast sections, sort of like telephone poles, which don't bend very easily. Given a mast head rig a backstay adjuster isn't likely to bend the mast atall. Putting the adjuster on pulls the masthead aft and straigthens the forestay which provides a few degrees of additional pointing without any speed loss. Gets you upwind faster...nice to have. Any effect on balance is likely to be in the mind, compared to the use of the other mainsail shape controls: traveller, halyard, vang, outhaul...
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