Kiteforum.com

Not a foreign concept to kites; here's a blast from the past (that shows how old I am...)

http://www.spidertraction.co.uk/Modulus.htm

Interesting and would be quite useful to many, but the weight of the zipper may detract from some of the concept of single skins

Honour to Aeros to revive the zipper concept.

I had two zipper kites around 2000 for about 2 years in use:

Both Windtools Mosquito Prototypes
- 9+ zipping down to about 7,8 m²
- 5 m² zipping down to about 4,2 m²

Difference was not as big as for the Aeros S1 Duo, but as in 2000 the zipper was the only "depower" it was quite valuable and I was zipping on and off about 2 times every land board session for those 2 years and always missed the option till now.