NPW as quad-liner: bridle question

NPW as quad-liner: bridle question

Post by Dan Mitche » Sat, 08 May 1999 04:00:00


 Not to do with the length of the lines particularly, more general one:

 In Peter de Jong's NPW plan for quad-lining it, he has a 12" or so line
linking the main and brake sections of the bridle. Does anyone know how
long/short this line should be for larger kites? I've tried removing this
line and it completely stopped flying because the brake lines moved
as far as they could go from the main lines, the wing shape changed, and
bad things happened; that said, though, looking around on the net at
various NPW plans I'm sure I saw one which was quad-lined and didn't have
this joining link.

 My guess is that the length of this joining link is related to the length
of the _handles_ you're using -- it doesn't need to be any longer than the
maximum throw you can get from the handles, as far as I can tell.

 That said, there may also be something to be gained by not having the
linking line in and tweaking the bridle appropriately..

 Does anyone know more about this?

 thanks,

 -- dan

 
 
 

NPW as quad-liner: bridle question

Post by Tel » Sat, 08 May 1999 04:00:00

Quote:

> In Peter de Jong's NPW plan for quad-lining it, he has a 12" or so line
> linking the main and brake sections of the bridle. Does anyone know how
> long/short this line should be for larger kites?

I think you just need to scale it respective to the keel length.

Quote:
>  My guess is that the length of this joining link is related to the length
> of the _handles_ you're using -- it doesn't need to be any longer than the
> maximum throw you can get from the handles, as far as I can tell.

The point is that the brake lines need to be longer than the main flying lines. At a low
angle of attack the trailing edge is further away and the brake lines are not under a lot
of tension compared to the flying lines. The link also makes adjustment easy for different
winds. Certainly easier than "tweaking" the bridle. You also need a comfortable angle for
holding the handles.

Hi,
Tel

 
 
 

NPW as quad-liner: bridle question

Post by Peter de Jo » Sun, 09 May 1999 04:00:00



Quote:
> Not to do with the length of the lines particularly, more general one:

> In Peter de Jong's NPW plan for quad-lining it, he has a 12" or so line
>linking the main and brake sections of the bridle. Does anyone know how
>long/short this line should be for larger kites? I've tried removing this
>line and it completely stopped flying because the brake lines moved
>as far as they could go from the main lines, the wing shape changed, and
>bad things happened; that said, though, looking around on the net at
>various NPW plans I'm sure I saw one which was quad-lined and didn't have
>this joining link.

> My guess is that the length of this joining link is related to the length
>of the _handles_ you're using -- it doesn't need to be any longer than the
>maximum throw you can get from the handles, as far as I can tell.

> That said, there may also be something to be gained by not having the
>linking line in and tweaking the bridle appropriately..

> Does anyone know more about this?

> thanks,

> -- dan

Just leave the line where it is: no need to remove it. Main line on
the top ring, brake lines on the bottom ring and it should work.

Regards, Peter


A&F Custom Kites Werkhoven NL
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