I have tested a backline trim solution that I’ve been hesitating to build for a while, and found that it works well. Unlike the other approaches out there, this is bombproof, very simple, cheap, and easy to build: two splice cleats.
Initially I was pessimistic that this would work. Who in his right mind would want to have 2 separate trim adjustments? Well, after trying it, count me in.
Some notes;
- Two separate adjustments are not ideal, but are easy to make with the kite in the air, and also wearing gloves, in both directions.
- The extra complexity (harder to build, custom parts) and potential issues of the other backline trim solutions (such as hidden wear) are eliminated.
- The ends of the 3 mm Dyneema that I used can be tucked inside the bar for a cleaner look.
- The bar throw can be maximized as there is no clam or splice cleat to reach and adjust on the main rope. Thus the trim adjustments will be less frequent, and will be done for ergonomics rather than safety.
- Use a permanent marker if you want some marks on the rope to make it easier to trim to the same lengths. Or, don’t bother because:
- Any backline length differences can be corrected on the spot. With the kite flying at 12, hold the bar straight and pull. If instead of stalling / powering up, the kite starts to turn, then the back lines are not the same length. Well, no problem - this takes a few seconds to fix. No need to land, tie your lines to an anchor, etc.