National 125 Sailing Association

125 Discussion Forum

Please note: This forum is read by a wide group of 125 sailors.
This is not the place for personal attacks or inappropriate comments on anyones race, sex, age or sailing abilities.



Return to the Forum List

Boom vang rigging - lever
Hi I have fixed up an early 80's ply 125 and am trying to work out the rigging. Although there are a few blocks etc missing, the boom vang seems to use a lever arrangement which I am struggling with. Anyone have any clues on how this goes together, or should I chuck it and go with a new block-based system. Also anyone with experience rigging these in Canberra would be keen to get some help.
Chris19-Dec-2015    Edit    Delete 
Re: Boom vang rigging - lever
There is also a steel cable coming from the typical boom vang connection point on the boom, and several connections on the. The top one seems a bit high for every way I have configured it so far.
chris19-Dec-2015    Edit    Delete 
Re: Boom vang rigging - lever
Hi Chris
Vang levers were popular in the 80s/90s for getting huge purchase from minimal blocks.
They were a bit fiddly to get right as you needed to get the attaching wires the right length. One wire attaches from boom to the top of lever (the side with multiple holes for adjusting) The other wire attached at the mast base to the underside of lever.
The purchases/blocks would be attached at the pointed end of the lever and this would pull downwards towards blocks at mast to create the down force on the boom.
I would recommend going back to a simple block and purchase system as its simpler and weighs less. Also many would say that the purchase that the Vang Lever gives is not required in 125s.
A simple 4:1 or 6:1 system with a cascade or two is more than enough.
Take a look at the various fitting manufacturers websites for dinghy vang system diagrams or check out another similar class of boat like a 420/470/F11 for ideas.
Andrew Tailor20-Dec-2015    Edit    Delete 

Return to the Forum List       Add a message to this discussion
Measurer's Forum
Committee's Forum

  National 125 Association admin