k
- Thread starter footerdog
- Start date
Now I'm going to check my mast asap! I get a creak but only when the boom swings, so like you I keep my boom tied off.
When you tuned the rig did you tighten the forestay?
the B&R rig pulls the mast back against the tension of the forestay so if you did not also adjust the forestay you did in fact make matters worse by loading the aft end of the mast base.
and I bet you don't point well with a loose forestay.
the B&R rig pulls the mast back against the tension of the forestay so if you did not also adjust the forestay you did in fact make matters worse by loading the aft end of the mast base.
and I bet you don't point well with a loose forestay.
Not a B&R rig
It was a traditional fractional rig. Mine was in-mast furling as well.
I owned a 40.5, and it was the last large Hunter with a backstay.
It was a traditional fractional rig. Mine was in-mast furling as well.
frank hope this is not the problem, when stan had the boat it got hit by lightning two different times regards ken
Well I'm not a pro but I do have an engineering degree. B&R stays are behind the mast so if you tighten them too much you end up tightening the forestay automatically. that may or may not leave the mast plumb however. so I'm thinking that a loose forestay would tend to rock the mast top aftward and put more pressure on the aft mast base.
I would also expect the stress to be a compression type of buckling and not a crack vertically so I'm thinking the tabernacle is not supporting the mast port and starboard uniformly. Basicly one side is not supported (the creak?) and is putting a shear stress on the mast base.
Is the mast plumb port and starboard?
I would also expect the stress to be a compression type of buckling and not a crack vertically so I'm thinking the tabernacle is not supporting the mast port and starboard uniformly. Basicly one side is not supported (the creak?) and is putting a shear stress on the mast base.
Is the mast plumb port and starboard?
I've been thinking about a cause for a couple days. There are water drains at the bottom of the mast that can get clogged and trap water in the mast. If it freezes over the winter could that have been the cause?
The issue looks like it is the forestay.
I have a ratchet back stay adjuster on my 40.5 and if I wind it up we get loads of pre-bend, the mast never sits on it heal like that.
We do sail ours in strong winds and big seas. the pre-bend is needed to de-power the rig.
Also there should be no way water get from the deck ( by the mast) to the bilge. the foot is sealed and so are all the electrics or you have a problem.
I have a ratchet back stay adjuster on my 40.5 and if I wind it up we get loads of pre-bend, the mast never sits on it heal like that.
We do sail ours in strong winds and big seas. the pre-bend is needed to de-power the rig.
Also there should be no way water get from the deck ( by the mast) to the bilge. the foot is sealed and so are all the electrics or you have a problem.
No matter what rig type you have, if your deck-stepped mast has rake (or is not plumb P/S) you can suffer from this type of loading. No matter what boat. Spar designers have always known about this. Most just have the designers factor in the additional stress when spec'ing the spar. Selden actually designed and use a curved foot/tabernacle designed to eliminate the problem. Clever Swedes.
