Hi all,
when i bought my nacra 5.2 the traveller sheet was tied off to the block on the rear beam giving me a 2:1 purchase

especially when sailing without the jib in big winds and broad reaching i've found 2:1 on the traveller sheet not to be enough

looking at the boat today i realised that instead of tying off to that rear beam block i can easily increase the purchase to 3:1 by running a longer sheet through it and then back to the traveller car

am guessing that 18-20 foot cats use 3:1...block and saddle
12-16 foot cats use 2:1...only saddle on rear beam center
and 17foot boats use either 2:1 or 3:1

would that be about right?

Have any pictures of the 2:1 set up?

As I recall my 5.3 had a bullet block on the back beam and the traveler sheet turned back to the traveler car. This gave us 3:1

Mine had that too (and I could never get it work well without tangling or limiting the amount I could center the traveler)...everything now (F18, N20, etc) uses a simple 2:1.

have a pic but can't post. easy to describe

1:1 would have sheet running through swivel and tying off on traveller car

2:1 would have sheet running through swivel to traveller car and then back to center of rear beam

3:1 would have sheet running through swivel to traveller car, back to block mounted at center of rear beam, then back to traveller car

am also hoping that 3:1 will allow me to pull main in about another inch for going to weather better

as someone pointed out in this video from 1:35 to 1:53 the main isn't centering well even when fully pulled in with just 2:1

http://www.vimeo.com/5075989

ahhhh, so pretty much everything uses 2:1...hhhmmm..........

If you feel a lot of resistance pulling it in you might try some smoother line like swiftcord.
You could put a split-tail on the end of your traveler as well to center it properly.

Tornado also have a 2:1 on the traveller. No problem centering it.
Friction is your enemy. Not only the line but also rollers the line pass through and the roller balls inside the car must have as little friction as possible.

If running the car is very heavy work, why not release some mainsheet or alter course before operating the car? Both will release pressure on the main and the traveller car.

have heard of split tailing but can't quite imagine it, will search, anyone feel free to chime in with pics or links please

You were going to windward in that sequence? I thought you were reaching.
Car is out rather a lot, yes. You do have a split tail on the traveller sheet so you are able to center it?

Mainsheet looks like it needs much more tension and that is an easy fix (I dont know your boat and you did not film the sails and their trim, but the sheet looks really loose).

http://www.layline.com/product/11211/764

hi Tony, saw that in the google search, how does it attached to the rear beam, 2 saddles on each side of halfway?

Rolf, have forgotten exactly what i was doing there, will use my newly purchased spray dry lube on the traveller car rollers, thanks for tip

do need to replace the rough old line

If the traveller is not running freely, check the balls inside as well. They do wear out and require replacement.
Be careful if you take the car off. You need a piece of track to run the car on to.

The split tail is tied off to a small eyelet on each side of the centerpoint of the beam. Implementing this will gain you a few centimeters but it will not center 100% anyway. Best solution there is so far though.

They say not to lube up delron bearings as it will cause them to not roll and get flat spots

the new OneDrop from McLube works well and is under $10. I also HAVE to lube (silicone) up my track every weekend to help my car slide (or it wont slide under tension)

on my TheMightyHobie18 you HAD to release main pressure if you wanted to travel.

I probably need new car/track but the x track is part of my rear beam so there is no easy/reasonably cheap upgrade. my x track is getting so sharp from use i cut my hands pulling my cat up the beach 2 weeks ago. time to fix that...

You rivet one of these to either side of the traveler center about 5" or 10" apart and cleat the tail in there: