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CX2SA > SATDIG 01.06.11 21:06l 312 Lines 9399 Bytes #999 (0) @ WW
BID : AMSATBB6299
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Subj: AMSAT-BB-digest V6 299
Path: IZ3LSV<IV3YXW<HB9TVW<ON4HU<DB0RES<ON0AR<HS1LMV<CX2SA
Sent: 110601/1903Z @:CX2SA.LAV.URY.SA #:8610 [Minas] FBB7.00e $:AMSATBB6299
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Thrust bearing maintenance (David Barber)
2. History of OSCAR (Clint Bradford)
3. Re: G5500 change voltage supply (Bill Dzurilla)
4. Re: Thrust bearing maintenance (Edward R. Cole)
5. Re: G5500 change voltage supply (Dee)
6. Re: G5500 change voltage supply (Bill Dzurilla)
----------------------------------------------------------------------
Message: 1
Date: Wed, 1 Jun 2011 16:33:59 +0100
From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] Re: Thrust bearing maintenance
To: <amsat-bb@xxxxx.xxx>
Message-ID: <DC2B6A7C4493401B89F7B707F4B9CBAC@xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Right or wrong, I use a Molybdenum Disulphide based grease. Over here (UK)
Castrol Moly Grease.
I use it for bearings, rotators and mast use. Always worked for me.
Degrease the housing and balls with spirit, clean and allow to dry. If the
balls are unduly worn I'd replace them. Then repack with grease and
assemble.
********
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Stephen E. Belter
Sent: 01 June 2011 13:20
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Thrust bearing maintenance
I have an Yaesu GS-050 thrust bearing that has been installed for about 15
years. The thrust bearing turns, but requires a lot of force.
I disassembled the thrust bearing to find that the grease is very sticky
(think candy apple sticky), and not lubricative (if that is a word).
Should I take it to an auto repair shop and ask them to degrease and then
lubricate similar to repacking a wheel bearing?
What kind of grease should be used?
Thanks and 73, Steve N9IP
--
Steve Belter
------------------------------
Message: 2
Date: Wed, 01 Jun 2011 09:14:46 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] History of OSCAR
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <4CE60540-E91B-461E-AD96-D539E739544C@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
There is a WONDERFUL 103-slide presentation posted on the front page of the
AMSAT-NA site.
"AMSAT Slide Show Space Day 2011" is a 5.6MB .pdf, prepared by Perry Klein,
W3PK and Dick Daniels, W4PUJ. It contains some great photographs from the
archives on Project OSCAR and AMSAT. Truly a "must-view!"
Clint Bradford, K6LCS
http://www.work-sat.com
------------------------------
Message: 3
Date: Wed, 1 Jun 2011 09:53:00 -0700 (PDT)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] Re: G5500 change voltage supply
To: amsat-bb@xxxxx.xxx
Cc: ea4cyq@xxxxx.xxx
Message-ID: <342065.46977.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Here is the mod to change Yaesu rotors to 220v:
http://www.hamcity.com/store/pc/catalog/pdf/220vconversion.pdf
But perhaps yours has a different transformer if it uses pin 3 for 117v. In
the mod, pins 0 and 3 are for 220v.
73, Bill NZ5N
> Subject: [amsat-bb] G5500 change voltage supply
>
> I have purchased a G5500.? The control box have a
> 117Vac label? in the real
> panel.? I opened it and a wire is connected through
> the fuse to the terminal
> number 3 of the KT-30 transformer and the other wire
> through the main switch
> to the terminal number 1 of the KT-30 transformer.
>
> I am wondering how I should connect it to work with 220Vac
> in Europe.
>
> Thanks in advance. ea4cyq@xxxxx.xxx
------------------------------
Message: 4
Date: Wed, 01 Jun 2011 08:56:14 -0800
From: "Edward R. Cole" <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Thrust bearing maintenance
To: "Stephen E. Belter" <seb@xxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Message-ID: <201106011656.p51GuECW012060@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 04:19 AM 6/1/2011, Stephen E. Belter wrote:
>I have an Yaesu GS-050 thrust bearing that has been installed for
>about 15 years. The thrust bearing turns, but requires a lot of force.
>
>I disassembled the thrust bearing to find that the grease is very
>sticky (think candy apple sticky), and not lubricative (if that is a word).
>
>Should I take it to an auto repair shop and ask them to degrease and
>then lubricate similar to repacking a wheel bearing?
>
>What kind of grease should be used?
>
>Thanks and 73, Steve N9IP
>--
>Steve Belter
Steve,
When I was building my tower#2 in 2008, I considered buying a Rohn
TH-3 thrust bearing (about $200+) and was advised to look in ebay. I
found a nice 3-inch ball-bearing radial-thrust bearing for about $35
(brand new). It has a zerk fitting for a grease gun to maintain the
lubrication (which at the slow rotation of antennas is almost
never). Ebay might be cheaper than a re-build.
73, Ed - KL7UW
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-testing*, 3400-?
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 5
Date: Wed, 01 Jun 2011 13:24:03 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: G5500 change voltage supply
To: "'Bill Dzurilla'" <billdz.geo@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Cc: ea4cyq@xxxxx.xxx
Message-ID: <E193C0713C6F48809ADC8E43CD972EB8@xxxxxxxx>
Content-Type: text/plain; charset=iso-8859-1
Look closer--Wrong rotor and I imagine you jump the other connections
together to have the voltage correct.
Again, Check the G5500 manual.
Dee
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bill Dzurilla
Sent: Wednesday, June 01, 2011 12:53 PM
To: amsat-bb@xxxxx.xxx
Cc: ea4cyq@xxxxx.xxx
Subject: [amsat-bb] Re: G5500 change voltage supply
Here is the mod to change Yaesu rotors to 220v:
http://www.hamcity.com/store/pc/catalog/pdf/220vconversion.pdf
But perhaps yours has a different transformer if it uses pin 3 for 117v. In
the mod, pins 0 and 3 are for 220v.
73, Bill NZ5N
> Subject: [amsat-bb] G5500 change voltage supply
>
> I have purchased a G5500.? The control box have a 117Vac label? in the
> real panel.? I opened it and a wire is connected through the fuse to
> the terminal number 3 of the KT-30 transformer and the other wire
> through the main switch to the terminal number 1 of the KT-30
> transformer.
>
> I am wondering how I should connect it to work with 220Vac in Europe.
>
> Thanks in advance. ea4cyq@xxxxx.xxx
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Wed, 1 Jun 2011 10:43:37 -0700 (PDT)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] Re: G5500 change voltage supply
To: amsat-bb@xxxxx.xxxx Dee <morsesat@xxxxxxxxx.xxx>
Cc: ea4cyq@xxxxx.xxx
Message-ID: <624206.26589.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
The pdf say "G5500" in handwriting and I know a guy who says he did this mod
on a G5500. But obviously the KT-30 must be a different transformer.
73, Bill
--- On Wed, 6/1/11, Dee <morsesat@xxxxxxxxx.xxx> wrote:
> From: Dee <morsesat@xxxxxxxxx.xxx>
> Subject: RE: [amsat-bb] Re: G5500 change voltage supply
> To: "'Bill Dzurilla'" <billdz.geo@xxxxx.xxx>, amsat-bb@xxxxx.xxx
> Cc: ea4cyq@xxxxx.xxx
> Date: Wednesday, June 1, 2011, 1:24 PM
> Look closer--Wrong rotor and I
> imagine you jump the other connections
> together to have the voltage correct.
> Again, Check the G5500 manual.
> Dee
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx
> [mailto:amsat-bb-bounces@xxxxx.xxxx
> On
> Behalf Of Bill Dzurilla
> Sent: Wednesday, June 01, 2011 12:53 PM
> To: amsat-bb@xxxxx.xxx
> Cc: ea4cyq@xxxxx.xxx
> Subject: [amsat-bb] Re: G5500 change voltage supply
>
> Here is the mod to change Yaesu rotors to 220v:
> http://www.hamcity.com/store/pc/catalog/pdf/220vconversion.pdf
>
> But perhaps yours has a different transformer if it uses
> pin 3 for 117v.? In
> the mod, pins 0 and 3 are for 220v.
>
> 73, Bill NZ5N
>
> > Subject: [amsat-bb] G5500 change voltage supply
> >
> > I have purchased a G5500.? The control box have a
> 117Vac label? in the
> > real panel.? I opened it and a wire is connected
> through the fuse to
> > the terminal number 3 of the KT-30 transformer and the
> other wire
> > through the main switch to the terminal number 1 of
> the KT-30
> > transformer.
> >
> > I am wondering how I should connect it to work with
> 220Vac in Europe.
> >
> > Thanks in advance. ea4cyq@xxxxx.xxx
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur
> satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 299
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