This diagram shows an idea for combining the stopper ball and power adjuster for a Crossbow. I am just showing the idea for comments. The gripper/adjuster is similar in principle to those used to adjust the rims of hoods on jackets etc. There is no detail of the gripper design, I am just talking in principle, but I think the engineering could be made to work.

This idea merits investigation.

The Masterpiece bar used a method of adjusting the rear lines rather than the front lines, as with a classic chicken loop adjustment mechanism. I never did receive feedback on how well this worked on the Masterpiece bar. The kiter had to pull or push on 2 adjusters at once to adjust the rear lines, and I envisioned a situation where one mechanism worked and the other jamed, where by the kite could get into a uncontrolable looping mode. I never heard of this happening, though.

With your proposal, both rear lines would theoretically adjust at the same time. This seems like a better method, as long as some of the line going through the series of pullies doesn't twist and jam somewhere. A looping kite situation could then result.

Maybe, covering the 2 lines above the stopper-adjuster with an accordian type cover would help to prevent tangles.

Anyways, thanks for your excellent post and clear presentation of this idea.

How about this? Might eliminate lots of barpressure.

Nice to see a few new ideas coming out (and well presented) but my comments on these two....

Ronnie - as you pull the ball towards you to depower the kite you also reduce the sheeting range by the same amount, hence stopping the kite depowering. All it will do is bring the bar closer to you and "disable" sheeting in.

Sols - You've created a 3:1 bar ratio. With the same kite you'd have more bar pressure. No idea what the net result would be if you did remove the pulleys at the kite end.

Hope this doesn't sound too critical; I certainly haven't come up with anything better.

get the turbo diesel bar,no prob reaching depower strap on that bar,its on the chicken loop.

Ronnie –

The diagram you show does not really change much in regards to ‘bar pressure’. It does in fact add some additional issues….. good effort though’

• The lines that pass through the pulleys on the front sheet lines will tend to twist when running through the sheaves. (a swivel is needed)
• Your bow kite system now has a total of six pulleys. (more maintenance awareness)

In a way it is refreshing to me, to see the acceptance of pulleys being used for LEI kite control. I have much prior art and patents issued using pulleys for the sheeting system. It just has taken a while for the public to appreciate the advantage.

If any manufacturers out there wish to know how to utilize the diagrams shown and ‘alleviate the bar pressure issues’, I would be happy to discuss mutually beneficial terms…. Send me a PM

Regards,
John Bellacera
Kite Control Systems

I was not the one suggesting a change in bar pressure. There is no change of pressure with my diagram.
As commented above the range of sheeting is reduced when you move the gripper closer to the bar to depower the kite, but the adjustment is quite small (It would be the same as the current adjustment of the powerline on the Crossbow) and the position of the stopper is usually at about arms reach.
The pulleys on the powerline are not entirely necessary, as they are only used a fraction of the time when kiting, so I do not see them as a big issue.
There are some good points to the Slingshot bar, but I think the Cabrinha stopper system is better because you just let go of the bar to depower. The power adjust of the Cabrinha is currently not as good as the Slingshot (IMO), which is why I suggested this idea.

Ronnie idea is excellent if an eficient and light device could be engineered
to do the job .Fred as you pull the grip down you power the kite so it doesn't matter that the sheeting range decreases ,as you need power .
As a gust hits thrusts the bar up and the sheeting range increase at the same time as the kite depowers.
Beautifull system but probably expensive,wereas slingy's system is easily copied with a few cheap components from a sailboat shop and will also do the job.

I think you're right. Sorry, my mistake.

Hi John,
After I tried so many bars and mods.
I know with your type of CC-Bar the pressure can be alleviated for sure,
pluss with the combination of the pulleys on the sides
the shorter depower length should be achieved IMO.
CC-Bar with Pulleys on sides=Lesser bar presure and good depower range
I think I got it.

DrLightWind