Sujet : Re: FAA To Finally Ditch Floppy Disks & Win-95
De : rich (at) *nospam* example.invalid (Rich)
Groupes : comp.os.linux.miscDate : 18. Jun 2025, 15:15:32
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <102uhm4$35n0c$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11
User-Agent : tin/2.6.1-20211226 ("Convalmore") (Linux/5.15.139 (x86_64))
In comp.os.linux.misc c186282 <
c186282@nnada.net> wrote:
On 6/17/25 2:20 PM, Charlie Gibbs wrote:
On 2025-06-17, c186282 <c186282@nnada.net> wrote:
On 6/16/25 1:52 PM, Charlie Gibbs wrote:
>
Yesterday I felt a something catching while moving the controls
in our small plane. I found that various bits of plumbing
behind the panel had shifted to where they were touching things
they shouldn't. Time to get out those good old nylon zap straps
and tie things back where they belong, just like the mechanics do.
Mind you, we don't get much above 10,000 feet...
>
Always MANY failure modes alas ...
>
However AIRLINE corps are SUPPOSED to keep abreast
and ahead of these issues.
<cough>Boeing<cough>
About the time I quit flying was during a huge OPEC
oil embargo. Fuel prices quadrupled or more and too
often you couldn't even GET the right fuel for the
planes. Valve lock in a 4-cyl engine - NOT good.
Green gas was NOT red gas !
And now it's replaced by blue gas - 100LL (low lead).
Much less lead than good old green gas (100/130), but
still three times as much as in the red gas (80/87)
that a lot of engines were designed for. Beware of
lead fouling the plugs!
In the 70s, engines made for Red did NOT take
well to 100LL. It was both ignition and
especially the VALVES. KEPT having valves
stick ... NOT good. Besides, oil embargoes
drove fuel prices through the roof - could
NOT afford it then.
Was 'red' a leaded fuel? Tetraethyl lead as a gasoline additive
provided more than simply an octane boost. The leftover residue from
combustion provided a lubricating effect, and as a result for many
(most?) engines designed in the days of leaded fuel the designers took
advantage of that lubricating effect from the tetraethyl lead for (at
least) the valve stems (esp. the exhaust valve, which operated at
temperatures that made only oil lubrication difficult) and for
cushioning the valve seats when the valves closed. When running
unleaded fuel in an engine that took advantage if the lead lubrication
effect, eventually one got stuck valves or very worn valve seats.
Re: FAA To Finally Ditch Floppy Disks & Win-95
Re: FAA To Finally Ditch Floppy Disks & Win-95