peppedurso wrote: ↑
Tue Mar 24, 2020 12:37 pm
PanTau wrote: ↑
Tue Mar 24, 2020 7:03 am
I'm currently updating my three kite models (Agilus, Ventus and GO) with the latest software release and some design changes. And could also add an extra light DCF (ex. cuben) version...
Funny fact about the DCF: There is a larger DCF order on the way and will be available in the extremtextil store and I was also planning to build a DCF Version of the Ventus. Lightest DCF is 18g/sqm for the sail
I've ordered form extremetextil some sample of DCF 102g, 50g and 18g, it's insanely light, waterproof and windproof. (btw amazing shop, service and customer care)
Is the 18g strong enough to be used for the canopy? how you compare to Ripstop? at a given strength what weight difference between DCF and Ripstop?
what amount of weight saving can you predict in using DCF 102g/DCF 18g vs Dacron/Ripstop? is the kite going to be stiffer too?
thank you in advance for all the info!
all the best
Done some testing with CT1K18/25gsm - exactly same amount of Dyneema yarn and tensile strength as CT1E08/18gsm, but slightly heavier due to different/heavier laminate film. Tensile strength is in the upper range of a 53-60gsm Teijin ripstop, tear strength is double. Ended up using for the canopy CT2K18/34gsm - same laminate as CT1K18m, but double the amount of Dyneema yarn, so are the specs vs polyester ripstop.
Maiden flight - just awesome, but after just few hours of use and packing/unpacking the CF shrunk heavily (as it normally shrinks) and the shape was gone. Heavy TE flutter, even the dacron struts lost shape. The kite (9m 3 strut hybrid) still flies in no wind, but the CF canopy project was ditched. Happy to see if somenone else will solve the shrinkage problem somehow. Before that, don't waste the nice material, make a tarp, tent or a backpack what it's made for.
Will post some photos of the canopy when I find them, it's been 4 years since then. The kite came out at a bit over 2kg, with DP dacron LE/struts and 0,80 bladder, split pump.