On Apr 21, 8:16=A0am, Auriga <brada...@[EMAIL PROTECTED]
> wrote:
> With no catalyst it is a rather slow burning mix. =A0In a 3/8 di. tube
> you get about a 3 sec. whistle, which is used for inserts.
> I certainly don't advocate doing this, especially with rockets or when
> using catalysts. =A0But when you are making a bunch of inserts with a
> relatively safe comp it is a much faster alternative.
>
> On Apr 21, 5:07=A0am, Bonedaddio <l...@[EMAIL PROTECTED]
> wrote:
>
>
>
> > On Apr 21, 12:49=A0am, Auriga <brada...@[EMAIL PROTECTED]
> wrote:
>
> > > Although most say you should always press whistles as opposed to
> > > ramming them there are instances where a rod and mallett are better
> > > suited. =A0I was usind a 70/30 perc salicylate mix in 3/8 tubes.
=A0Wi=
th
> > > little more than a tsp. of comp and proper safety gear I felt that
> > > pressing would be too time consuming. =A0With some friction and
impact=
> > > tests ramming was commenced. =A0No problems.
>
> > Seems to me that's a mighty brief whistle?? I'm =A0curious about the
> > geometry: length of the tube, length of open tube to comp, etc.
>
> > Perhaps I'm just being paranoid, but I strongly doubt I'll be ramming
> > whistle mix, unless there is a consensus of the people on this
> > newsgroup that I respect saying it's OK. I've had no accidents in two
> > years of this hobby, and all my fingers, eyes, skin, etc. I vote for
> > keeping it that way!
>
> > Les- Hide quoted text -
>
> - Show quoted text -
if its relatively slow burning and you are using small amounts
perhaps. I have been studying the70/30 loose using perchlorate/
benzoate and its some powerful stuff, but your using a different mix,
so if you take proper precaution.. ok, but I would never do that for
large rockets like you stated, especially with fast whistle, bc if it
goes off you wont be able to tell the difference between flash powder
beyond light output.. Its not like your ramming lead styphnate or
mercury fulminate but its still a sensitive mixture.
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