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Rig tension
What is considered to be an optimal forestay tension for 125?
Mark Whittle30-Jan-2005    Edit    Delete 
Re: Rig tension
Sorry Mark for taking so long. I will get a expert in the field to add to this message ASAP.
Barry Pike6-Feb-2005    Edit    Delete 
Re: Rig tension
would also like to know.
jeff purcell8-Feb-2005    Edit    Delete 
Re: Rig tension
Rig tensions on 125s are very critical since we have such heavy and stiff masts. One tension might be very quick in some conditions and dog slow in others.

In lighter winds you want a soft rig(less forstay tension) then in heavier weather to give to rig some 'play', espically in choppy conditions.

In windy stuff you want a tight rig to prevent the sag. If you don't have enouhg tension the jib will sag, spilling wind out of the sail and loosing power and height.

Also forstay tension will cause your forstay to sag which has an effect on your jib. Sag makes the jib fuller which is good in light winds and choppy water but bad in heavy winds and flat water.

In light conditions carry around 20-22 reading on a tension guage and in heavier winds carry around 25-28. But play around with these figures and find the ones that feel and perform the best for your boat.

Also keep a log of each time you rig and sail your boat. Record things like tension, rake, wind strength, size and types of waves and how you think the boat went upwind and downwind. This way when you face the same conditions next time you might know what is or isn't fast.

The best thing to do is use the figures above as a GUIDE, start with thme and play around until you think you have got it right.
Chris Ando9-Feb-2005    Edit    Delete 
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FlaflerRari9-Feb-2005    Edit    Delete 
Re: Rig tension
I don't know what it is in kgs, but I would normally carry about 18 on 2.5mm wire up to 15 knots then increase it to about 22 in winds above this. Be careful pulling on tighter tenson if you have an older boat.

Kevin Cameron
Kevin Cameron11-Feb-2005    Edit    Delete 
Re: Rig tension

Using 3mm wire stays on our new foam sandwich boats here in Vic we ran somewhere between 26 and 30 on the Loos guage. This is something around 165 to 200 kgs. This is Jamie Thomson's 125 rigging rule of thumb starting point and proved succesful.

We didn't play with the rig tension too much for varied conditions other than very light weather when we slightly slackened off the tension.

You will find rake and spreader settings equally important in getting better performance out of your 125.


Steve Low10-Jun-2005    Edit    Delete 
Re: Rig tension
im curently sailing on a boat that has a rig tension of 40
21-Aug-2006    Edit    Delete 
Re: Rig tension
Are you sure that your tension is 40?? because that's huge with what size wire, & how old is your boat. I am currently running 30->33 (120->145Kg)depending on the day with 3mm on my sidestays approx 300mm up
Ian Klingberg27-Oct-2006    Edit    Delete 

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