I am transfering to longer poles and the bigger spinaker, I am a little confussed as to where I should fix my uphal to the mast. In the libary there is an article by Jennie King that says 2790mm above the black band is a good starting place, yet I have seen the article with Dan's widget fitting just below the jib halyard sheave.
Any advice greatly recieved.
In case it makes any difference my kite is an Alverbanks.

Just below the jib halyard exit point.

Jennie's article is probably for the old length poles.

I wondered if it refered to the old poles but it is in part 3 of the articl.
I guess the poles should still lie horrizontaly along the boom and this would then give me the rough length of the uphaul?

Even part 3 is quite old now. It was before the long poles.

With uphaul fixed just under jib halyard sheaves, the poles should like roughly along the boom.

they will end up hanging above the boom.

My Chipstow mast has the spinnaker uphaul block 3920mm above the black band.  Poles hang about right.

For those of you lucky enough to not be forced to work by the pressence of the PM in your locality and hence be able to sail in the morning, might one of you be able to measure the length of their uphauls and report back?
Many Thanks.

Go with Dan's adaptation which fixes into the jib sheave - it works as I used it when I converted over to the bigger spinnaker.  No use measuring the uphaul length as it is best to have this adjustable - usual practice is to have a single line running up the mast from a cleat near bottom up to Dan's widget and then to a ring to which both uphauls are tied off.  Allows for adjustment of the pole height which is normally some 4-6 inches above the boom unlike with the shorter poles which used to lie along the boom.

Actually you can get away with just tieing them on becasue the amount of adjustment we (or at least I!) use is very small. You may want to drop the poles about an inch for light conditions, but that amount of adjustment doesn't really justify cutting holes in the mast for sheave blocks.

If you already have a sheave block, while there will be more friction and it looks untidy, there is nothing to stop you from still using it. Just rivet or screw a pulley and a deck eye in the desired place.

However for simplicity just having a deck eye and the lines adjustable via where you put the knot on the top of the pole should be perfectly satisfactory.

Dan's widget is unlikely to work on 3190 because it won't have a 2:1 on the jib halyard.

The length od the uphaul should be pretty easy to guess. Just measure from the uphaul point on the mast to a point about 2 inches above the gooseneck. That will give you a start point.

Nope there is no 2:1 on the jib, we are talking muscle box and quadrant levers on 3190.
Anything else would likely fold the boat in half (high bow tank)
We have however waved goodbye to cross deck sheeting, we learnt that lesson at Bartley when there was a good breeze.

This thread has really given me food for thought. 3112 has a pre 1980 high bow tank, hog stepped alloy M7 mast and fixed length uphauls hanging from approx 2/3 the distance from deck to hounds for the 2.3 metre length twin pole system. I assume they were fixed at that height for the 6ft pole rig. Regardless of how slack the downhaul, my crews have great difficulty setting the pole on the mast compared with my previous boat which had a single pole system with the uphaul and downhaul attached to the centre of the pole rather than the end. I believe that the present problem is probably caused by a combination of the longer poles, the uphauls fixed to the outboard ends, and their tops attached so low on the mast, that a much greater force is pushing inwards. Logic dictates, therefore, that the uphauls should be fixed to the mast as high as possible to reduce this force. Hanging them from higher up the mast is a definite job to do before racing this season. 

There is no doubt that twin poles are better than single and take very little more time to rig. In any case I have to have them because of the mast strut.

Best for 2008, Peter

I use a part rope, part bungee uphaul on a single pole set up. Its adjustable, but we dont tend to adjust it on the water, just leave it with some tension (not enough to make it difficult to clip the inboard pole-end to the mast) and use the downhaul to adjust the pole height.

Uphaul is set on the mast below the jib halyard and when gybing the pole is drawn back twin pole style and then re-launched on the new tack so the uphaul doesnt foul the jib halyard.