Re: Helium loss
Steve G8KHW / AJ4XE
I don't think Kaymont sell any chroroprene balloons (Totex KA and
TX series are both latex I think). For long duration Chloroprene
would be better for UV degradation (and I think helium diffusion
If you want chloroprene a good source would be the Pioneer (Qualatex / ToyTex) Cloudbusters - (as used for cluster ballooning) - but only available in sizes up to about 600g.
You should consider using HiFloat to reduce helium diffusion (on both latex and chloroprene according to manufacturer).
Helium diffusion seems to be highly dependent on a number factors
- loss on the ground is considerably different than at altitude
(cold and humidity).
You should probably seek guidence form previous ballast/gas flight folk (like the
Stanford guys). My
longest Chloroprene floater flight was only about 18 hours I'm
On 22/09/2022 20:22, rich.m.legrand@... wrote: