All.
I know this subject has been discussed before but I thought it time I addressed the problem of my main leach fluttering about in anything from an f3 upwards.
I think we have concluded the main problem stems from the fact that the CF gaff 'topmast' spar is flexing away when under pressure opening up the leach and causing it to flutter.
My first question is has any one done anything about strengthening the spar, or is the solution to replace it altogether with either a stronger CF spar or another one in different material - though there might be weight implications in this.
I took the opportunity yesterday to discuss the problem with my sail maker and we laid out the sail in his loft, his first comment was that there was little or no curvature cut into the leach and that, in itself would cause flutter, although he agrees that the main problem is caused by the flexing spar.
My initial thoughts were to fold a 'dart' into the leach to tighten it up and use this 'dart' to slip in a batten? However the sailmaker didn't think that would be effective and would put to much tension into the leach.
After some discussion we have agreed that he will recut and stitch up the leach with more curvature and make two batten pockets to try and control the flutter.
I am interested in hearing if any one else suffers from this problem and what they have done to control it?
I will be testing the main as soon as possible after I get it back so will update on my findings.
Incidentally, and I don't want to tread on anyone's toes, this is the second time my sailmaker has had the sail for alteration and he has twice now commented that the sail (Dolphin Sails) is poorly cut and he expressed surprise at that, saying it did not appear to be of the quality that normally comes out of the Dolphin loft.
Your comments would be greatly appreciated .. this is again just me blundering about in the dark trying to resolve problems that I don't know that much about.
Regards
Andy