[TowerTalk] Mast vs. R45G part deux

[Pete Smith N4ZR]

Don, K4ZA rigged a very elegant device using a basketball hoop to manage 
a tall mast while raising it with a gin pole and dropping it down 
through a thrust bearing. Don't have any pix here but maybe Don can oblige.

73, Pete N4ZR
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On 4/19/2013 11:39 PM, K8RI wrote:
> On 4/19/2013 3:26 PM, K7LXC at aol.com wrote:
>> Howdy, TowerTalkians --
>>
>>      Tnx for your inputs but I think I need to  describe what I want 
>> to do
>> in more detail.
>>
>>      There is a heavy 20' mast sticking out of  the top of a pointy 
>> top 45G.
>> What I want to know is if by lowering the mast down  thru the middle 
>> of the
>> tower, if at some point you can exit the mast thru the  face of a tower
>> section?  I haven't tried it and doubt if it could be done  but I 
>> wanted to see
>> if someone in the group has done it or attempted it.  Tnx.
>>
>
> I use 24' lengths of 2" DOM in both 45G and 25G. I think You'd have to 
> remove 2, if not three consecutive cross braces to feed one out the 
> side.  IIRC one isn't enough as there is very little bending moment in 
> the mast.
>
> We has one slip out of the grab. It made it all the way to the bottom 
> with no problem and didn't appear to even bounce off any braces 
> although it did hit the guy anchor rings on the way by.
>
> 73
>
> Roger  (K8RI)
>
>
>> Cheers,
>> Steve    K7LXC
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