How much to set up my Rig?

[global_odyssey]

It was bl**dy freezing this weekend - however, Alk is now afloat and we've got her masts up - (I congratulate myself for making all 16 pieces of wire rigging the correct length first time!)
However, I'm not entirely sure how to tension the standing rigging and am thinking of getting a proper rigger to do it before I next go down to the boat. Otherwise I will spend too much time messing about with it and no time sailing.

Anyone got an idea what the going rate would be for a rigger to set up the new standing rigging on a small yawl (31ft)?
I assume I just need to give him the mast rakes from the sailplan and he will get on with it!

<hr width=100% size=1>I've got wind......................
...............................in my sails!

 

[Sailfree]

Picked up a great free publication from the Selden Stand at the LIBS explaining how to do it in simple terms. Try them I am not sure whether they have same info available on a web site.

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[AIDY]

Had XW Rigging of Gosport set up our rig last year. Charged approx 100 pounds and it took them about an hour (2 chaps). Our boat is a fractional rigged and 38 foot.

Came to the conclusion that i did not know enough about it to do it myself and would take a couple of weekends to do. So got the experts to do it.

<hr width=100% size=1>/forums/images/icons/wink.gif <font color=blue> Regards Aidy </font color=blue>

 

[david_e]

Expect pay between £35 - £60 per hour. If he is local then fine, not sure about travelling time, exes etc. He might need an assistant which you would pay for.

As you have done one of the more difficult jobs yourself why not try and complete it, as suggested, by researcing the the web for the info. The main tool you might have to buy would be a tensionmeter but there are cheap ones about.

I have never done it on a large yacht, but think of the number of people who race (including bigger boats) who have the mast down regularly and set it up OK on their own.

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[global_odyssey]

Thanks for the replies - that gives me a good idea about what is fair or otherwise. Now I can phone a few riggers with confidence.

<hr width=100% size=1>I've got wind......................
...............................in my sails!

 

[Sailfree]

One thing that suprised me about the Selden Book is that they advocate strapping a rule to the shroud every mm it gives you a % of the tension that you require. So simple yet correct due to Hook's Law. When I have used Tension guages on Dinghys they measure sideways deflection and seem a hit or miss affairs!

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[pandroid]

I used to use a tension guage on my 28 footer but to be honest, its still only a guide, and I dont use it anymore. Most of the books go through the easy steps, and advocate a basic setup at the pontoon, and then tune the rig under the right conditions under sail. Unless you are trying to tune a very specialised or multi-multi spreader rig, it aint that difficult. (he says....)

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[david_e]

Re: Hooks Law

I covered this in my Helicopter days but memory fails; please remind me.

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[qsiv]

Re: Hooks Law

Hooke's Law

F = kX

F is Force
X is extension
k is a constant for a given material

Applies only in the region below elastic limit for material.

In simple terms "extension is linearly proportional to the force applied"

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[Sailfree]

Re: Hooks Law

From memory Hooks Law states that most materials are elastic and deflect a given amount for a given load up to their Elastic limit. eg apply a small load to a steel cable and its extension is proportional to that load, double the load = double the extension until the load is so great the steel deforms permenently (often by quickly breaking!!).
In the Seldon Rigging set up book (sorry its not in front of me and have only quickly scaned it so far) they recommend the % of the maximum stress we should aim at for say the forestay and backstay and the recommended mast rake. For this % stress they give the necessary extension that would give this stress. Selden suggest securly fixing a rule on the stay with the datum noted against the turnbuckle with no load. As you tighten up every extra mm the stay is shortened represents a % of the load Selden are aiming to achieve.
Once the rig is set up statically Selden describe how to check and fine tune the rig with sailing trials.
The book is general for cruisers but beware of overtightening as GRP boats do bend longitudinally under load as the "experts" on the America's Cup boat found out a few years ago!
Hope my humble efforts of explanation helps - the Selden book does explain it better and for each type of rig!

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[chriscallender]

The Selden guide can be downloaded from
<A target="_blank" HREF=http://www.seldenmast.com/download.cfm?download=7581&webnode_id=2099&filename=595-540-E.pdf>http://www.seldenmast.com/download.cfm?download=7581&webnode_id=2099&filename=595-540-E.pdf</A> Had a quick look and it looks very good. Need to check mine as the rigging was replaced last year and has loosened off a bit since it was fitted.

Chris

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