Spinnaker pole down haul elastic ( f15)

[piperdog7]

Hello, I’ve an old flying fifteen and It doesn’t have the elastic set up on the spinnaker pole down haul, could anyone explain in leyman terms how it is rigged, or even better a diagram, thanks for your help

 

[William_H]

Just to bump the thread.... But I can not imagine how elastic would work in a down haul. Indeed on my similar sized boat the spinnaker down haul needs a lot of power to keep pole down when flying spin. Perhaps the elastic is a back up to avert loss of pole over board when stowing it. ol'will

 

[jamie N]

OK, I'll have a go.
The uphaul/downhaul that I've got does use elastic. I've a rope that's fixed at one end, and runs through a small block. The end of the rope is attached to the elastic. The elastic keeps the tension on the rope when the rope's not being used. When the spinnaker pole is used, the rope is 'hooked' to the small cleat at the centre of the spinnaker pole, the spinnaker pole is then pushed out so it's deployed. The rope that runs through the small previously mentioned block has been measured so that it's the right length to hold the spinnaker pole correctly, restraining its up/down movement. Once the pole's removed, the elastic simply retensions the uphaul/downhaul taking up the slack, and keeping it all neat and tidy.

 

[Refueler]

I am trying to figure out what's wrong with the question ...

My bearing out pole is telescopic ... and that means the 'release line' that runs long the pole needs elastic to allow me to extend / retract length of pole. Basically a line is fixed to the release pin at each end ... line is short - so a length of bungee connects the two allowing ends to extend.
I don't see reason to have elastic on a downhaul ... the downhaul would be normal line ....

If the pole is fixed length ... then why any elastic ??

 

[piperdog7]

Just to bump the thread.... But I can not imagine how elastic would work in a down haul. Indeed on my similar sized boat the spinnaker down haul needs a lot of power to keep pole down when flying spin. Perhaps the elastic is a back up to avert loss of pole over board when stowing it. ol'will

There is a stop knot on the downhaul under the deck to stop the pole raising at a certain level

 

[piperdog7]

OK, I'll have a go.
The uphaul/downhaul that I've got does use elastic. I've a rope that's fixed at one end, and runs through a small block. The end of the rope is attached to the elastic. The elastic keeps the tension on the rope when the rope's not being used. When the spinnaker pole is used, the rope is 'hooked' to the small cleat at the centre of the spinnaker pole, the spinnaker pole is then pushed out so it's deployed. The rope that runs through the small previously mentioned block has been measured so that it's the right length to hold the spinnaker pole correctly, restraining its up/down movement. Once the pole's removed, the elastic simply retensions the uphaul/downhaul taking up the slack, and keeping it all neat and tidy.

Thanks, I’ve been told that there is about 3 folds of elastic under the deck for 15, I’m just after seeing or working out the layout

 

[Chiara’s slave]

I’ve never sailed a 15, owning up in advance. I sail in the XOD class, and frequenty share rigging up space with them though. They seem to do things the same way we do. The elastic is not the downhaul, you’d never get control of the pole like that. It is the uphaul, and is there to support the weight of the pole in light airs and at the hoist. The downhaul is a 2:1 rope, led back to whichever crew member you want to trim the kite. The strain on the downhaul with the pair of skimpy knickers the X flies as a kite is massve, you couldn’t think of it being elastic. Our carbon pole flexes up at the tip maybe 20cm in heavy gusts, it’s hard work even on a 2:1 to pull it down, you might choose more purchase.

 

[piperdog7]

I’ve never sailed a 15, owning up in advance. I sail in the XOD class, and frequenty share rigging up space with them though. They seem to do things the same way we do. The elastic is not the downhaul, you’d never get control of the pole like that. It is the uphaul, and is there to support the weight of the pole in light airs and at the hoist. The downhaul is a 2:1 rope, led back to whichever crew member you want to trim the kite. The strain on the downhaul with the pair of skimpy knickers the X flies as a kite is massve, you couldn’t think of it being elastic. Our carbon pole flexes up at the tip maybe 20cm in heavy gusts, it’s hard work even on a 2:1 to pull it down, you might choose more purchase.

Maybe, but on the f15 blog and website it does state elastic on the downhaul attached to rope that has a stopper knot under the deck to stop the pole over rising, im just trying to find out how the elastic is rigged under the deck

 

[Chiara’s slave]

Maybe, but on the f15 blog and website it does state elastic on the downhaul attached to rope that has a stopper knot under the deck to stop the pole over rising, im just trying to find out how the elastic is rigged under the deck

And I‘m pretty convinced that is wrong. Your pole will be at whatever height it chooses itself, and will move when you are hit by a gust.

 

[B27]

I've sailed a fair few different dinghies and some small dayboats over the years, the spinnaker arrangements vary enormously. Even within series-built boats things vary from one to the next, more so as a series of owners fiddle with things.

As much as it's safe to generalise, I'd suggest the downhaul should be a non-stretchy line, with some arrangement of bungee to tidy the slack under the deck when the pole is stowed. A couple of pulley blocks or plastic rings etc running on the down haul and pulled to the sides by elastic perhaps. The elastic might run across under the deck a couple of times so you have a long length of it under tension, this means the tension is enough with the pole stowed, but not excessive when you're trying to set the pole.

 

[Chiara’s slave]

I've sailed a fair few different dinghies and some small dayboats over the years, the spinnaker arrangements vary enormously. Even within series-built boats things vary from one to the next, more so as a series of owners fiddle with things.

As much as it's safe to generalise, I'd suggest the downhaul should be a non-stretchy line, with some arrangement of bungee to tidy the slack under the deck when the pole is stowed. A couple of pulley blocks or plastic rings etc running on the down haul and pulled to the sides by elastic perhaps. The elastic might run across under the deck a couple of times so you have a long length of it under tension, this means the tension is enough with the pole stowed, but not excessive when you're trying to set the pole.

Likewise, a fair bit of dinghy experience here. All rigged like that.