I took a good look at my furler, mast, shrouds and stays yesterday preparatory 
to trying to do some mast tuning.  I am unsure as to the best way of going 
about this process and could use some advice.
 I found that I was raked somewhere between 18 and 24 inches aft, which is much 
too far by all accounts, so I want to bring the mast back to 6-12 inches.  I 
have read the guides, but it is the specifics of different mast/shroud/stay 
combinations is what I am unsure about.  It was more straightforward on my 
previous 34.   My mast has no adjustment possible at the base or through deck 
unlike my old one.  As near as I can tell, it is all done with shrouds and 
stays.  The backstay is a split wire with a pinching car that runs up and down 
to control backstay tension.  The backstay wires runs to two turnbuckles on the 
transom.  The spreaders are only slightly swept back but the rod shrouds run to 
a position just behind the mast.  One runs to the top of the mast and the other 
part way up, both passing through the same point on the lower spreader.  The 
top ones are extremely tight, with no flex/sag on the leeward side when sailing 
upwind.  The lowers are a bit less tight but still no sag.  There is a third 
rod, which I am forgetting where it terminates on the mast, but presumably 
lower down.  Forestay is on a Harken furler.  
So how to proceed (or wait for the Rendezvous and get all the great minds 
together for a tuning session!)
1.  Should I disconnect the backstay before doing anything with the shrouds? 
The car on the split stay can only go so high without running out of wire, so 
even at its topmost position, it is putting some tension on the backstay.  I 
can tie another line to it and let it run up further but it makes more sense to 
me to remove them altogether or loosen the turnbuckles as much as possible.
2.  Presumably, I would then loosen all the shrouds and then tighten the bolt 
on the furler to bring the mast forward, then recheck rake after tightening the 
shrouds somewhat?
3. After adjusting rake, how would the tension of the backstay be adjusted?  
Presumably minimal tension with the car at its topmost position?    The 
tightness of those turnbuckles is going to affect the amount of tension the 
adjuster is able to generate, so that would seem an important adjustment, but I 
have not seen any guide to how to set that.  
4.  When to check the rake?  With the backstay loose/disconnected or in its 
nominal highest position?  
5. One thought I have had is that before doing any of the above actions, I 
should recheck the rake with the backstay removed just to see if it makes any 
significant difference.  I know they were removed to take the boat out of the 
water last fall and again in the spring, so how the yard guys re-tensioned them 
I have no idea and I have not further adjusted them.
Thanks- Dave
  
Aries
1990 C&C 34+
New London, CT



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