I have an aluminium mast (I think original) on 3154, a 1978 NSM. I have been generously donated a kevlar Batt main (about 5 years old - sail number 3621) that hasn't seen much use, however it is cut for a carbon deck stepped mast. I am considering getting the sail altered to better fit the alumninium mast. I am wondering if there is any point entertaining this idea? Anyone done something similar? Any idea of cost? The sail will end up smaller, but I have no idea by how much, would this be significant?
Hi Ed. What about asking John Parker for some advice? Could easily get the sail across to Levington for you if he fancies a go at it. I am picking up that 'job lot' on Sunday by the way so you are welcome to have your pick of those. I would think that they are all hog-stepped sails.
Hi, as it was explained to me when I asked a similar question, the mod. requires the bolt rope etc to be removed and the luff re cut to match the (presumably flatter) luff curve needed for an ally M7 or M1 or Proctor D shaped mast. So basically taking a bit off the middle of the sail in my basic understanding. The cost I was esimated was well over £100, at which point I went away to have a think, and decided it wasn't such a bad fit on the mast after all!
Try moving the spreaders back so they deflect the shrouds slightly aft,(when sighted up the shroud). When you apply a little rig tension this will pre bend the mast and remove some or most of that fullness
Mark at Advantage sails here in Brightlingsea, Essex has been great helping repair, modify and make bits for club members, he does B14 bits and merlin repairs for me - may be worth a try
I moved the spreaders back a little on my ally mast (Proctor) to take a P&B main and pretty much as far back as they could go to take a Speed main which removed the similar creases you are talking about.
Thanks, I have been a little slow to play with the spreader settings, will definitely fiddle around with the rigging before doing anything drastic with sails. On the rig tension point, as 3154 (soon to be re-named as "Infinite Jest") has a high bow tank I have been reluctant to crank the rig up too much, would this be an issue?
I know mark often visits walton and frinton to measure for boat cover etc at Titchmarsh - he may even collect and deliver if you are lucky!
On the rig tension, theres an article in this forum (by Graham Williamson, I think) that discusses rig tension. From what I remember you have to be careful with excessive tensions on the older boats with the high bow tanks.