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Re: [TowerTalk] Rotor Control Cable (correction)

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Rotor Control Cable (correction)
From: KD0RII <KD0RII@web-pub.com>
Date: Tue, 10 May 2016 23:56:36 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Whoops! My Bad. I used the formula for circumference instead of area. My mistake, corrected areas below show that your numbers are accurate. Sorry about that.

AWG Di. in. Di. mm ohms/1kFt. ohms/km (1) (2) (3) (4)

8 0.1285 3.2639 0.6282 2.060496 73 24 1650 Hz 480 lbs 9 0.1144 2.90576 0.7921 2.598088 64 19 2050 Hz 380 lbs 10 0.1019 2.58826 0.9989 3.276392 55 15 2600 Hz 314 lbs 11 0.0907 2.30378 1.26 4.1328 47 12 3200 Hz 249 lbs 12 0.0808 2.05232 1.588 5.20864 41 9.3 4150 Hz 197 lbs 13 0.072 1.8288 2.003 6.56984 35 7.4 5300 Hz 150 lbs 14 0.0641 1.62814 2.525 8.282 32 5.9 6700 Hz 119 lbs 15 0.0571 1.45034 3.184 10.44352 28 4.7 8250 Hz 94 lbs 16 0.0508 1.29032 4.016 13.17248 22 3.7 11 kHz 75 lbs 17 0.0453 1.15062 5.064 16.60992 19 2.9 13 kHz 59 lbs 18 0.0403 1.02362 6.385 20.9428 16 2.3 17 kHz 47 lbs 19 0.0359 0.91186 8.051 26.40728 14 1.8 21 kHz 37 lbs 20 0.032 0.8128 10.15 33.292 11 1.5 27 kHz 29 lbs

(1) Maximum amps for chassis wiring
(2) Maximum amps for power transmission
(3) Maximum frequency for 100% skin depth for solid conductor copper
(4) Breaking force Soft Annealed Cu 37000 PSI

AWG    Di. mm    Area    sq.mm.
8    3.2639    8.3668805717276572460770934832243
9 2.90576 6.6314631936414281721763848154316 *2= 13.262926387282856344352769630863 10 2.58826 5.2614528470315686267430888378835 *2= 10.522905694063137253486177675767 11 2.30378 4.1684240097207742771748700975827 *2= 8.3368480194415485543497401951654 12 2.05232 3.3081107163350877199066605458564 *2= 6.6162214326701754398133210917128 15 1.45034 1.6520741319242726437452325615007 *2= 3.3041482638485452874904651230013 18 1.02362 0.8229385497274551231226118036712 *2= 1.6458770994549102462452236073424

----------
73 de George, KD0RII

On 5/10/2016 11:49, W5GN wrote:
FWIW, it's certainly new, but I just read that if you
pair two #18 gage wires,
you have #15 gage capacity, and if then pair the two #15's,
you have #12 gage capacity.
Each paring reduces the gage by 3.

Barry, W5GN

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Wilson
Sent: Tuesday, May 10, 2016 11:24 AM
To: towertalk <towertalk@contesting.com>
Subject: [TowerTalk] Rotor Control Cable

Did u check the wire gauges?
If your run is “long”, you need two motor power wires of larger gauge.
I don’t know what “long” is.
WL
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On 5/10/2016 11:49, W5GN wrote:
FWIW, it's certainly new, but I just read that if you
pair two #18 gage wires,
you have #15 gage capacity, and if then pair the two #15's,
you have #12 gage capacity.
Each paring reduces the gage by 3.

Barry, W5GN

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Wilson
Sent: Tuesday, May 10, 2016 11:24 AM
To: towertalk <towertalk@contesting.com>
Subject: [TowerTalk] Rotor Control Cable

Did u check the wire gauges?
If your run is “long”, you need two motor power wires of larger gauge.
I don’t know what “long” is.
WL
_______________________________________________



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TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

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