leach control with a sprit boom

   The boat I am currently building is designed to have a sprit boom on a standing lug rig(see diagram) I know this probably isn't the specialism of people on this forum but I wondered if any of you could work out  a simple system to allow leach control as it would drive me mad sailing something that I couldn't properly control the sail shape on. 
My thoughts so far are:
The sheeting position can't be altered to get different sheeting angles.
Adjusting the angle of the yard will alter luff tension as well as the leach tension

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Reuben T Send Private Message Find Member's Posts Groupie Joined: 22 Mar 13 Location: Lyme Regis Online Status: Offline Posts: 74	Post Options Post Reply Quote Reuben T Report Post Quote Reply Topic: leach control with a sprit boom Posted: 31 Mar 14 at 10:43pm
	The boat I am currently building is designed to have a sprit boom on a standing lug rig(see diagram) I know this probably isn't the specialism of people on this forum but I wondered if any of you could work out a simple system to allow leach control as it would drive me mad sailing something that I couldn't properly control the sail shape on. My thoughts so far are: The sheeting position can't be altered to get different sheeting angles. Adjusting the angle of the yard will alter luff tension as well as the leach tension

JimC Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6662	Post Options Post Reply Quote JimC Report Post Quote Reply Posted: 01 Apr 14 at 1:39am
	Think you're building the wrong boat then mate... But if you junked the lug sail in favour of a gaff rig main of approximately the same shape you'd have a rig you could have a reasonable degree of control over. Give it a push kicker and you'd have just as much room round the mast. The point of a lug sail like that isn't efficiency but the ability to wave a largish lump of rag in the air with a minimum of strings. Edited by JimC - 01 Apr 14 at 1:42am

transient Send Private Message Find Member's Posts Really should get out more Joined: 21 Aug 12 Online Status: Offline Posts: 715	Post Options Post Reply Quote transient Report Post Quote Reply Posted: 01 Apr 14 at 2:21am
	Indeed..... Which is why old fishing boats used lugs....they had better things to do than pull endless pieces of string. Edited by transient - 01 Apr 14 at 2:25am

Rupert Send Private Message Find Member's Posts Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956	Post Options Post Reply Quote Rupert Report Post Quote Reply Posted: 01 Apr 14 at 8:39am
	Your downhaul will control luff tension, and creating a system to change the angle of the sprit will control (to a small degree) leech tension. However, as Jim and T have said, this is not a fine control sail. The gaff itself helps on the leech tension, though - you have no roach to control.
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