Topband: Drones for antenna installation?

[David G4FTC]

Thanks for the data on the sch 80 pipe - I assume that the 300+ psi figures are working pressures which should give a good margin.

It was the thought of having shards of PVC embedded in your body after a catastrophic failure that scared me

David G4FTC
________________________________
From: Topband <topband-bounces at contesting.com> on behalf of Grant Saviers <grants2 at pacbell.net>
Sent: 01 September 2019 00:13
To: Topband at contesting.com <Topband at contesting.com>
Subject: Re: Topband: Drones for antenna installation?

I stick to max 80psi which has a good safety factor vs the pipe rating
(4" @220psi in my launcher).  Very cold weather and knocking it around
when brittle or anytime is certainly to be avoided.  An alternative is
to buy schedule 80, McMaster sells sch 80 PVC in 5 foot lengths. The
pressure rating for 3" is 370psi and 4" 320psi.  Then the end fittings
should also be sch 80.

A friend once (young = stupid) made a firecracker out PVC pipe.  Note
that PVC doesn't show on xrays, so small bits were still erupting from
his skin 20 years later.  Fortunately no eye damage.

Grant KZ1W

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