flapping leech

Refueler said:
Leech line. Think about it ... leech of a sail is not a straight edge. It has a slight curve / form to it. When you tighten leech line - you force the leech to lose its form and hook to be straight.

Leech line IMHO should be adjusted to not have slack line, locked and left alone - so sail can set properly.

Topping lift - I like mine set so boom is supported when sail is down, when sail up - just enough slack so sail / sheet / kicker control boom and TL is not catching sail or backstay. I never have to adjust it.
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Agree with all that. Of course where you like your boom to sit in harbour affects whether you have to adjust the topping lift, but a trivial point. At no time should the topping lift be under tension when sailing, and leech lines, if it’s 100% necessary to tension it, then the sail is on the way out. They may stop the flapping, but it ruins the sail shape.
 
I agree with others that the topping lift is too tight, as Spirit of Glenn’s has pointed out the topping lift main perpose is to support the boom when mainsail is down.
Unlike William H, I do use the leach line, but remember to shake it out when not needed.
The Anderson 22 is one of the boats have always admired, well designed, good quality construction and no mean performer.
If thé syndicate I was part of in my early sailing days hadn’t out voted me we would have bought an Anderson rather than the (I think) inferior Foxterrier.
 
Thanks for all the advice folks - looks like it's the topping lift then, which I guess is pretty obvious now thinking about it!
 
...I hadn't actually realised that it's only supposed to support the boom when the sail is down. Thanks too for the comments about the Anderson 22 - the only boat I can compare her to is a 1970s Mirror dinghy so I don't have many reference points, but she seems pretty good to me!
 
Ah the Mirror dinghy, that’s the culprit for getting me obsessed with sailing, a long weekend in Mevagissey with some mates in the late 60’s, one of whom had a Mirror, lunchtime scrumpy sessions in The Harbour Lights Hotel, followed by trying to sail a Mirror are not really to be recommended , but it got me hooked.
 
I don't mean to be patronising, but there are several good books on sail trimming. Perhaps a copy might be worth investing in.

I start off with everything a bit loose and tighten as needed, I love my leech adjuster.
 
thanks again for all the help folks. I look forward to reporting back that all flapping is a thing of the past with a tweak of the topping lift!
 
Flapping sails is a bit like sailing with your fenders in the water. Not good but you still see lots out there.

Steveeasy
 
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