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[TowerTalk] t2x, c31xr and ef240x

To: <towertalk@contesting.com>
Subject: [TowerTalk] t2x, c31xr and ef240x
From: earlham@radiks.net (Iowaguy)
Date: Wed, 1 Sep 1999 14:57:25 -0500
While the proposed load may not exceed the effective moment ratings, it
seems like I remember a specific disclaimer that the T2X is not supposed to
handle anything larger than a 24' boom.  As I recall, it's hidden somewhere
deep in the bowels of the manual. . . it's not widely published making it
one of those joyful things that you don't discover, despite your best
research efforts ahead of time, until you have the product on your doorstep.
. . and then find out that it's not suited to your needs.

There are many important aspects with regard to long term rotor performance.
. .effective moment is but one.   Look carefully before you leap.  If you're
serious about a rotor, I'd look at one of the Big Boys.

73. . . Dave
W0FLS
-----Original Message-----
From: k6ll@juno.com <k6ll@juno.com>
To: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Wednesday, September 01, 1999 2:17 PM
Subject: Re: [TowerTalk] t2x, c31xr and ef240x


>
>
>
>On Wed, 1 Sep 1999 13:28:00 -0500 brunet@us.ibm.com writes:
>>
>>
>>
>>It looks like the T2X can't handle a C31XR and a EF240X.  The torque
>>spec on the
>>T2X is 3400 ft lbs (weight x turning radius).  The turning radius of
>>the EF240X
>>is 25.1' the weight of the two antennas is 120 lbs and a 20' chrome
>>moly is
>>about 140 lbs for a torque of 25.1 x 260 = 6526 ft-lbs.  Is this
>>correct logic?
>
>Not really.
>
>turn radius x wt = effective moment
>c31xr  23.8 x 82 =  1952
>ef240  25.1 x 38 =   954
>mast  0.083 x 140 =   12
>total effective moment = 2918 ft pounds.
>The t2x is rated for 3400 ft-lbs, so you are good.
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