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T O P I C    R E V I E W
gregorywebb Posted - 08 Apr 2007 : 18:45:31
I have set the rigging as per the laser manual and the proctor spreader instructions, however the mast has excessive bend in the lower section and rubs badly against the sides of the mast gate.

The lower shrouds are set on the third hole on the adjuster plate, but seem very slack when not under load. The Mast also moves forward in the gate, almost to the front of the gate in brisk conditions.

I have an early stratos keel sail number 361, and the settings are taken from the manual supplied. I notice on the newer boat the lower shrouds are now set at hole 4, and the angle of the spreaders has changed.

Does any one have any suggestions? is this normal?
15   L A T E S T    R E P L I E S    (Newest First)
terrycrook Posted - 07 Jul 2007 : 22:44:22
WE have now re-rigged our boat so I can say the lower shrouds on our boat are also in the fifth hole down (as are the higher shrouds - fifth hole down on the front holes). Confused....hope not!!

As for rig tension.....simply pull on as much as you can....the boats are very robust and we have tried playing with differnet tensions but it makes very little if not any difference. Just sail it!!!

hope this helps,

Terry 296

Sayling Posted - 06 Jul 2007 : 14:20:13
quote:
Originally posted by mark_herrington

Just wondering whether anyone knows what the rig tension should be when using a tension gauge on the shrouds? Can't seem to find it anywhere and if we could get an idea, would help with the queries on this discussion maybe?

Thanks

Mark
"250- Snapper"



In the new rigging manual, in the section on rigging the jib (after step 7) there is a note:

'If a loose gauge is used to measure the rig tension do NOT exceed 24 units or 150Kg - measured on the shroud 0.75 metres above the vernier adjuster.'

So that should set the maximum, anyway.

But the manual is rather vague about this elsewhere:

'6. Tension the jub halyard purchase system until the jib luff wire is taught.' (sic.)

Sayling



newly a Stratos c/b owner -- sail no. 568 - 'Ketchup'
mark_herrington Posted - 06 Jul 2007 : 13:09:15
Just wondering whether anyone knows what the rig tension should be when using a tension gauge on the shrouds? Can't seem to find it anywhere and if we could get an idea, would help with the queries on this discussion maybe?

Thanks

Mark
"250- Snapper"
terrycrook Posted - 02 Jul 2007 : 22:28:57
Vincent

Not too sure. We have not rigged it since returning from the Nationals. When we do I will let you know.

Terry
vjordan Posted - 02 Jul 2007 : 11:54:37
Terry - what setting do you use for your lower shrouds?

- Vincent
terrycrook Posted - 01 Jul 2007 : 21:21:35
WE have our shrouds in the fifth hole down in the front of the shroud plate. Mast stepped in the centre.

Pull on as much rig tension as you can for all weathers. It works for us!

Good luck

Terry
Simon Perrier Posted - 01 Jul 2007 : 11:24:51
[quote]Originally posted by Sayling

Simon,

I am just guessing about 'ardent'. In English, there are the terms 'weather helm' and 'lee helm'.

Weather helm is when you have to keep the tiller to windward to keep the boat on course -- the boat tends naturally to steer into the wind. A little bit is good, but too much is not.

My guess is when you moved the foot of the mast aft (rearwards) this moves the centre of pressure of the mainsail back, which will give the boat more weather helm?

Is this what is meant by 'ardent'?

You are right. "Weather helm" is the exact word.
Thank you very much.
Simon



SP
Sayling Posted - 30 Jun 2007 : 22:53:17
Simon,

I am just guessing about 'ardent'. In English, there are the terms 'weather helm' and 'lee helm'.

Weather helm is when you have to keep the tiller to windward to keep the boat on course -- the boat tends naturally to steer into the wind. A little bit is good, but too much is not.

'Lee Helm' is when you have to keep the tiller to leeward to keep on course -- the boat tends naturally to steer away from the wind. Usually not good, or rather dangerous.

My guess is when you moved the foot of the mast aft (rearwards) this moves the centre of pressure of the mainsail back, which will give the boat more weather helm?

Is this what is meant by 'ardent'?

Sayling


newly a Stratos c/b owner -- sail no. 568 - 'Ketchup'
Simon Perrier Posted - 30 Jun 2007 : 15:08:23
quote:
Originally posted by Simon Perrier

On the laser web site it is indicated the fourth hole for the lower shrouds. On mine, the third... But perhaps it’s not a mistake because I believe it is not necessary that the lower shrouds be tended. As it is said, they are useful just to restrict forward bend in the lower third of the mast. It’s useful, when there is strong wind that the mast can curve and make that the sail is less hollow.

SP



I tested the boat for the first time yesterday. I am sure now there is a mistake on my rigging manual (the one which has been given to me) : it’s indeed the fourth hole for the lower shrouds, the third for the shrouds. Like that the lower shrouds are not tended, which is good.
I always think the rake is too much pronounced for light winds. I tested first hole for the shrouds and second for the lower shrouds. The rigging manual says it’s possible. No problems, but only for light winds because the mast touches the front of the gate. I will test later to move back the foot of the mast (Selden) of a hole. The only problem could be that the boat became too much ... "ardent" (in french ! I don't know in english. Perhaps : too much going up with the wind ...?)
Very good boat indeed.
Simon
(1017)


SP
pcmoyes Posted - 08 May 2007 : 13:01:07
quote:
Originally posted by pcarter

You could post the picture here. That may help others too.
Thanks,

Pete 789


Pete
It is not a close up picture but does show the rake of the mast in light airs.
Image Attachment: IMG_3973.JPG (43.39 KB)
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pcmoyes Posted - 08 May 2007 : 12:58:03
quote:
Originally posted by gregorywebb

Philip, do you think you could also send me the photo of your setup. - I think the mast step is incorrect on mine, and I did tighten the lower shrouds, but this just left the leaward side upper shroud very loose under a stiff breeze. The top of the mast also had exessive bend. - thanks for all the help

GW


Gregory
Try this i think i have found the attachment link
Philip
Image Attachment: IMG_3973.JPG (43.39 KB)
Uploaded on 23-Apr-2015 04:41:27
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Simon Perrier Posted - 05 May 2007 : 10:21:53
Just a precision. On the laser web site it is indicated the fourth hole for the lower shrouds. On mine, the third... But perhaps it’s not a mistake because I believe it is not necessary that the lower shrouds be tended. As it is said, they are useful just to restrict forward bend in the lower third of the mast. It’s useful, when there is strong wind that the mast can curve and make that the sail is less hollow.
Hoping to be clear...
Simon


SP
pcarter Posted - 04 May 2007 : 07:04:55
You could post the picture here. That may help others too.
Thanks,

Pete 789
gregorywebb Posted - 03 May 2007 : 21:05:25
Philip, do you think you could also send me the photo of your setup. - I think the mast step is incorrect on mine, and I did tighten the lower shrouds, but this just left the leaward side upper shroud very loose under a stiff breeze. The top of the mast also had exessive bend. - thanks for all the help

GW
pcmoyes Posted - 03 May 2007 : 12:24:18
The Rake or angle of the mast is very pronounced when compared to other boats, i will try to send you a picture of my boat under sail which will give you an indication. My boat is set up as the instruction manual except that the lower shrouds are in the fourth hole down on the deck plates.
Regards
Philip

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