[Space] budget

Mikolaj Habryn dichro at rcpt.to
Fri Jan 15 21:31:39 UTC 2010

Sounds like a reasonable idea - I presume the regulators will be
helium-specific? Can we split the cost with the Other Secret
High-Altitude Project, or find a loaner, or do we need a dedicated one
for ourselves?


On Fri, Jan 15, 2010 at 10:32 AM, Adam Fritzler <mid at zigamorph.net> wrote:
> On Thu, Jan 14, 2010 at 6:19 PM, Christie Dudley <longobord at gmail.com> wrote:
>> Another question that came
>> up... do we want to buy our own tank? We'd have to keep renting them
> In practice, renting tanks is no big deal, and has the advantage that
> you can, say, pick it up already filled on launch day and return it
> that evening and never have to deal with it again, as well as reserve
> (but not necessarily use) extra tanks as failure contingency. Renting
> usually is quite nearly free.  Also you don't have to worry about the
> tank being safe as it ages.
> If you own your own, you'll have to wait for them to fill it, which
> will likely have to be done on a weekday and take a few hours of
> someone's time (who must have a vehicle capable of moving it and
> storing it). These problems probably aren't huge if you have access to
> a number of people with flexible schedules, but if you want to do a
> launch with a couple people with 9-5 jobs, renting a tank the day of
> launch is likely to be easier logistically.
> However, owning your own regulator and other fittings is definitely
> the way to go.  The 291 tanks from non-party-stores will not come with
> anything appropriate for filling a balloon. You can rent those too but
> you have the risk of every rented regulator you see being slightly
> different and having to scramble for fittings on launch day.  This
> expenditure shouldn't be more than 150$, and probably less than 100$.
> asf.

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