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Author Topic: Self Tacking Jib  (Read 7739 times)

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Offline Jimmy Rudd

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Self Tacking Jib
« on: January 05, 2016, 01:30:54 PM »
Afternoon,
Im wondering which is best, straight or curved jib track?
Through work I have come across a very light weight track system, no ball bearings, lube free, and pretty cheap, but only straight track is available. They will do a curved track, but..... its very expensive. I'm on pretty good terms with the rep, so can probably get a section long enough for a trial on Squid, but if curved is the way to go, I'll stick to sourcing a 49er/Int14 etc style system.

Thoughts and opinions please people.

Thanks
Jimmy
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Jimmy
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roland_trim

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Re: Self Tacking Jib
« Reply #1 on: January 06, 2016, 08:29:50 AM »
Almst no-one sells a bent track - On most boats they have started with a striaght track and bend it!

Confused - what happened to the track you just fitted?
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Offline Stuberry

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Re: Self Tacking Jib
« Reply #2 on: January 06, 2016, 08:52:05 AM »
Straight tracks tend not to work because when you sheet in the car will want to centre itself. Therefore bent track is essential. Most people have a continuous curve and really swanky people (Shiny Beast??) have a W shape track which gives yo more overlap yet still crosses the mast.

Agreed with Roland about bending your own track.. If you can procure un-drilled track it's easier to dial in a consistent curve and then drill the holes.
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Offline Clive Everest

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Re: Self Tacking Jib
« Reply #3 on: January 06, 2016, 11:50:19 AM »
We used an Allen RS800 track on A+E. It was already bent but we added a bit more.
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Offline Jimmy Rudd

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Re: Self Tacking Jib
« Reply #4 on: January 06, 2016, 01:23:39 PM »
Sadly on the 1st outing the ear exploded off and snapped the track in half :(
I think I have another sourced, but this idea was just something I came across. I might ask him for a sample and see if I can bend it to shape. Would be nice not to keep losing balls when it all goes wrong.
Thanks for the info guys, just thought I'd ask the question.

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Jimmy
EJ 3206

Offline Will_Lee

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Re: Self Tacking Jib
« Reply #5 on: January 09, 2016, 03:29:53 PM »
We used a 49er track (which I am told is the same as an RS800 track) on both Atum and Antidote. These ones are strong enough that they really can be secured only at the ends and in the middle. Can also be stood on without issue. We tipped the track to point at the point on the forestay where a perpendicular from the clew would intersect for Atum. For Antidote, the track points at a point higher than that. Both worked.

Your enemy is the track wanting to centralise as the sheet load comes on. On Atum it was touch and go (you could sometimes see it 'trying' to centralise, but it did not do it). We made the geometry worse by tilting the track back so much on Antidote, but we offset that by having on-track sheeting rather than forward/back sheeting (which generates some centering force on the track).

Good luck!

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