Today's Message Index:
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1. 07:14 AM - Z-31 questions (Art Zemon)
2. 08:31 AM - Re: Z-31 questions (Bill)
3. 05:14 PM - Re: Z-31 questions (Robert L. Nuckolls, III)
4. 07:13 PM - Re: Z-31 questions (Art Zemon)
Message 1
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Folks,
I am looking at Z-31B, to add a ground power jack to my plane. What is the
symbol at the very bottom, labeled "GND PWR 2A"? It looks like a circuit
breaker with an extra line.
For a 14V airplane that will be visiting FBOs at smaller airports, is
either the military style or the Piper style plug more common? When I had
my Arrow, I carried my own jumper cable. Would it be reasonable to not
carry that cable if I install the right jack in the plane?
Thanks,
-- Art Z.
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 2
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Subject: | Re: Z-31 questions |
Hi Art,
See chapter 1, figure 1-13 in the AeroElectric Connection.
You'll find "Pullable" and "Switch/Breaker". The latter is the one you
describe.
Best,
Bill
On Sun, Aug 20, 2017 at 7:13 AM, Art Zemon <art@zemon.name> wrote:
> Folks,
>
> I am looking at Z-31B, to add a ground power jack to my plane. What is the
> symbol at the very bottom, labeled "GND PWR 2A"? It looks like a circuit
> breaker with an extra line.
>
> For a 14V airplane that will be visiting FBOs at smaller airports, is
> either the military style or the Piper style plug more common? When I had
> my Arrow, I carried my own jumper cable. Would it be reasonable to not
> carry that cable if I install the right jack in the plane?
>
> Thanks,
> -- Art Z.
>
> --
> https://CheerfulCurmudgeon.com/
>
> *"If I am not for myself, who is for me? And if I am only for myself, what
> am I? And if not now, when?" Hillel*
>
Message 3
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Subject: | Re: Z-31 questions |
At 09:13 AM 8/20/2017, you wrote:
>Folks,
>
>I am looking at Z-31B, to add a ground power jack to my plane. What
>is the symbol at the very bottom, labeled "GND PWR 2A"? It looks
>like a circuit breaker with an extra line.
I showed a crew-openable breaker . . . either pullable or switch-breaker
here . . . as a means by which the pilot can have control over ground
power while at the controls. the one time I had to use ground power
on my rental was in Kansas City. Overnight was -10F. The guy on the
cart had his back to me when he applied ground power to the C172XP I
was renting. EVERYTHING was lit up TOO bright . . .he had put 28v to
my 14v airplane. With his back to me I couldn't get his attention
and the stock GP jack for airplanes that year were hard-wired to the
bus.
In desperation I hit the starter and the engine thankfully lit
right off . . . was spinning like gang-busters! As soon as he
heard the engine catch, he shut the power off. I really wanted
to climb out and fuss at him . . . but I wasn't going to shut
the engine down after all that excitement. He smiled, waved and pulled
the plug to wind up the cord. I waved . . . but I didn't smile.
Everything was working okay so I came on back to Wichita. Anyhow,
that's when I decided that pilot control of the ground power
jack was a good idea . . . perhaps even ov protection.
http://tinyurl.com/m85ohwx
>For a 14V airplane that will be visiting FBOs at smaller airports,
>is either the military style or the Piper style plug more common?
>When I had my Arrow, I carried my own jumper cable. Would it be
>reasonable to not carry that cable if I install the right jack in the plane?
Can't say . . . both jacks are in service so I'll bet
an FBO has both cables. The cable I carried on
my excursions in rentals had jumper-cable clips on
the supply end. Wanted to be able to crank from a car
battery . . . usually as plentiful as ground power carts
and it let you use a vehicle's battery too.
Bob . . .
Message 4
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Subject: | Re: Z-31 questions |
Whoa, Bob, that's one heckuva story! Thanks for explaining. I had thought
that the ground power jacks in my old Cherokees had been hardwired to the
bus but, not having the wiring diagrams handy, I did not know for sure.
Cheers,
-- Art Z.
On Sun, Aug 20, 2017 at 7:13 PM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> I showed a crew-openable breaker . . . either pullable or switch-breaker
> here . . . as a means by which the pilot can have control over ground
> power while at the controls. the one time I had to use ground power
> on my rental was in Kansas City. Overnight was -10F. The guy on the
> cart had his back to me when he applied ground power to the C172XP I
> was renting. EVERYTHING was lit up TOO bright . . .he had put 28v to
> my 14v airplane. With his back to me I couldn't get his attention
> and the stock GP jack for airplanes that year were hard-wired to the
> bus.
>
> In desperation I hit the starter and the engine thankfully lit
> right off . . . was spinning like gang-busters! As soon as he
> heard the engine catch, he shut the power off. I really wanted
> to climb out and fuss at him . . . but I wasn't going to shut
> the engine down after all that excitement. He smiled, waved and pulled
> the plug to wind up the cord. I waved . . . but I didn't smile.
>
> Everything was working okay so I came on back to Wichita. Anyhow,
> that's when I decided that pilot control of the ground power
> jack was a good idea . . . perhaps even ov protection.
>
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
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