Viper 640 Class Association Forums

Viper 640 Public Forums => Viper Discussions => Topic started by: bastaque on July 03, 2020, 03:51:47 PM

Title: Tack line length
Post by: bastaque on July 03, 2020, 03:51:47 PM
#29 has the new carbon pole (long story).

I am not sure if the tack line length is right. Actually, it's driving me a bit crazy.

The pole extend all the way so that's fine. But...I still have about two feet of line from the ball to the end of the line when extended.

my options:
a) 2 feet of line for a giant bowline knot and tail: take a knife to the surplus
b) lifting the tack so high to make the spin frustrating to fly in most condition
c) some other option I am missing completely

Thanks

Francois
Title: Re: Tack line length
Post by: Steven Haywood on July 04, 2020, 03:20:42 AM
You could shorten the tackline by tying the knot at the mast foot a bit further up the line as a trial... Have you measured the pole length when it's extended to make sure it's right?
Title: Re: Tack line length
Post by: bastaque on July 04, 2020, 12:48:15 PM
Hi Steven and thanks.

Yes, the pole comes out to a full 190cm as per class rules.

I also tried to reduce the length of the tack line with a knot at the mast end, but then the ball (on the tack line) prevents the pole to extend fully. The tack line was thickened at the ball to prevent it to go up to the tack.

So maybe the ball should be able to move freely along the line so that I can control the length of the line with a knot as you suggest. Or get rid of the ball as the knot to the tack would fulfil the same function.

Is that correct thinking?

Francois



Title: Re: Tack line length
Post by: Peter Beardsley on July 06, 2020, 08:51:02 AM
Sounds like the line may just be too long.  If you can go to the full 190 cm and you can tie a good bowline, then just cut off the excess from there.  Tack of the kite should always be flush to the end of the pole - there is never a reason in Vipers to ease the sprit line.  If you really wanted to float the kite out for short periods of time, you do it by easing the halyard a foot, not the tack line. 
Title: Re: Tack line length
Post by: bastaque on July 06, 2020, 03:48:59 PM
Done!

I love cutting rope....

Thanks Peter.