[450] Slack Loop Addendun

[djmay at comcast.net]

Thanks, Dave, I forgot about the thrust bearing - I have beam fever.  Now I see what you meant about the stacking distance, but remember, I was actually going to try to put the halos on a separate mast.  Also, those male N to S0-239 adapters are $10 at HRO and only $6 at Texas Towers. 



P.S.   WTF - How did you come up with such a professional looking drawing in a matter of a few minutes, or do you have these all in an archive somewhere we don't know about, just in case someone asks?  
----- Original Message ----- 
From: "David McKenzie" <kb1fsy at vhfwiki.com> 
To: "144.450 Mailing List" <450 at lists.vhfwiki.com> 
Sent: Monday, March 23, 2009 8:54:24 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [450] Slack Loop Addendun 

Attached is what I'd do (everything is to scale, estimated on the loops, and adjust the spacing to your liking. You can get the thrust bearing from Stark Electronics in Worchester, Mass for $20 or so. Drive or ship up to you, but I wouldn't do it with out dropping the rotor and using a thrust bearing, similar to Bob's setup and the poll in my back yard that you see so often. 




2009/3/23 < djmay at comcast.net > 




I see...  it's the same thing I have now for the halos.  What was hanging me up, Bob, was I was remembering the beam in my attic in Woodbury and I had to have tons of slack because the antenna was mounted  just above the rotor (the rotor was fixed to the attic floor.)  Thanks for undoing my mental block. 

----- Original Message ----- 
From: "Bob" < N1UJS at toast.net > 
To: "144.450 Mailing List" < 450 at lists.vhfwiki.com > 
Sent: Monday, March 23, 2009 9:30:57 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [450] Slack Loop Addendun 




 
I don't have any close up pictures, so I'll try to explain.... 
dress the cable from the beam in a straight line domn the mast with wire ties ont he OPPOSING side of the mast from the "rotor stop"......put the LAST wire tie (idealy MORE than one at this point) a foot or two above the rotor.   With the antenna turned halfway through rotation (if your "stop is NORTH, then point it SOUTH) bulge the cable out a foot or more so it makes a hump in the same direction the antenna is pointed, then start strpping it to the mast BELOW the rotor at about a foot or two down the mast and continue down with your ties. 
This should allow you enough slack in either direction of rotation. 
Get it? 



----- Original Message ----- 
From: djmay at comcast.net 
To: 450 at lists.vhfwiki.com 
Sent: Monday, March 23, 2009 7:07 PM 
Subject: [450] Slack Loop Addendun 


Pictures OR diagrams would be greatly apprecited.  No rush, the beam is coming from M2 in California, and I was told it might be about a week. 





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