[TowerTalk] Re[2]:

R. Otto R. Otto" <N8NGA@one.net
Mon, 4 Sep 2000 22:11:57 -0400


Hello Craig,

You are correct -- damned good eyes you have there fella!!  I was in a
hurry and selected the wrong set of specs.  The intent was the same
though, to show how two companies use different methods to describe
their products.  I have since posted a site for BigBoy Rotators that
has a very nifty chart showing a comparison of all the top rotators --
neat way to get the comparison in like terms.  Also, the BigBoy is
sure UGLY, but sure looks competitive.  While they are relatively new
to the US market, seems that those who have them really like them.
Orion was second choice among respondents.

Sorry group for my oversight.

73's from.......

R. Otto
N8NGA@one.net
Cincinnati, Ohio

**********************************************
DXCC 10M         ** DX is !! **        WAS 10M
       There is a very fine line between
         "HOBBY" and "MENTAL ILLNESS"
**********************************************
When trouble arises and things look really bad,
there is always one individual who perceives a
solution and is willing to take command.
      VERY OFTEN THAT PERSON IS CRAZY!
**********************************************
Monday, September 04, 2000, 7:36:54 PM, you wrote:

CW> The Yaesu 2800SDX has:
CW> 34 sq.ft. Wind Load
CW> 6870 ft. lbs. K Factor
CW> 1808 ft.-lbs. Stationary Torque
CW> 57.8 - 181ft. lbs. Rotation Torque
CW> 661 Max Vertical Load

CW> The Specifications that you have stated below for the Yaesu is for the
CW> 1000SDX.

CW> Good luck in your hunt...
CW> Craig, KB5BOB
CW> ----- Original Message -----
CW> From: R. Otto <N8NGA@one.net>
CW> To: <towertalk@contesting.com>
CW> Sent: Monday, September 04, 2000 10:11 AM


>>
>> Hello towertalk,
>>
>> We're back to one of those "how do ya tell" questions.  Based on the
>> input here (which was pretty diverse) I went to the sites for several
>> rotors to compare specs.  Rotors, just like antennas, have no standard
>> of comparison.  Each company has it's own gobbledygook of marketing.
>> For instance, how do you compare the following??
>>
>> Orion 2800  -
>> Wind Area Capacity            35 sq. ft.
>> Starting Torque               3500 in. lbs.
>> Rotating Torque               2800 in. lbs.
>> Braking Torque                17,000
>> Vertical Load Capacity        1800 lbs
>> Mast Size (OD)                1.75-3"
>> Rotation Speeds / 360 degrees 55 TO 300 sec.
>> Rotation Range                0-360 degrees -+ 14 degrees
>> Weight (rotator unit)         42 lbs.
>>
>> Cost                          $1429 with controller
>>
>> Yaesu G2800SDX -
>> Wind Load                     23.5 Sq. Ft.
>> K-Factor                      2,020 Ft.-Lbs.
>> Stationary Torque             433 Ft.-Lbs.
>> Rotation Torque               43-79 Ft.-Lbs.
>> Max. Vert. Load               440 Lbs.
>> Max. Vert. Intermittent Load  1320 Lbs.
>> Mast Size                     1-1/2 - 2-1/2 In.
>> Backlash                       2
>> 360 Rotation Time            35-74 Seconds
>> Weight                        7.7 Lbs.
>> Cable Conductors              5
>>
>> Cost                          $1069
>>
>> Couple of observations.  If I convert Yaesu's ft/lb to
>> in/lb by multiplying by 12, the Yaesu still comes out quite a bit on the
CW> short end
>> of the stick.  Interesting that the Orion has a 360 degree rotation,
>> +/- 14 degrees.  Seems to me that's not very good.  Theoretically it
>> could be 15 degrees short, when I'd really like to see over 360
>> degrees so I can quickly hit that station that always seems to be just
>> the other side of the mark requiring a 350 degree rotation <G>.
>>
>>
>> I've tried to find the "Prop Pitch" rotor and had no success.  Same
>> with Aztec RF.   Any ideas?
>>
>> 73's from....
>>
>> R. Otto
>> N8NGA@one.net
>> Cincinnati, Ohio
>>
>> **********************************************
>> DXCC 10M         ** DX Is !! **        WAS 10M
>>        There is a very fine line between
>>           "HOBBY" and "MENTAL ILLNESS"
>> **********************************************
>> When trouble arises and things look really bad,
>> there is always one individual who perceives a
>> solution and is willing to take command.
>>       Very often this person is crazy!
>> **********************************************
>>
>>
>>
>> --
>> FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
>> Submissions:              towertalk@contesting.com
>> Administrative requests:  towertalk-REQUEST@contesting.com
>> Problems:                 owner-towertalk@contesting.com
>>



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