In a message dated 97-03-09 23:28:20 EST, firstname.lastname@example.org
> Hi Dave,
> I have a heavy duty AB-105 tower, not the regular duty one you have, but
> am familiar with it.
> First of all, I agree with your approach to issue #1. Although, an
> alternative would be to build new guy sets (to replace your 20 year-old
> ones) and attach them at:
> 37, 77, 117. The 77 would be done last, replacing them one at a time.
> (Abandon, in place, the existing guy attachment plates at 47 and 107.)
> If you consider the alternative described above, or not, you might think
> of replacement with fiberglass guys. I can elaborate further if you
> like, but, K3MM, W3LPL, W3EA, N3RR (I) and others have used these
> successfully. In fact, K3MM recently posted some fiberglass guy rod for
> As far as issue #2, if you can remove one-half of the dual guy
> attachment plate at a splice, I do not believe that the leg will move.
> To be certain, tighten the other guy attachment/splice plate combination
> fully before loosening the opposite side bolt/nuts. Loosen them and
> remove the bolts one at a time and try to swivel the guy attachment
> plate away from the leg before you have removed the last of the three
> bolts holding the guy/splice plates together (while the opposite side
> guy/splice plate still has its bolts/nuts tight). That way, once it's
> swiveled away, re-insert one bolt/nut to keep the leg in place while you
> remove the last of the three bolts, remove the old guy attachment plate,
> install the new guy attachment plate, re-insert one bolt, swivel, etc,
> etc.... Similarly, install the new guy attachment plates at 117 and 37.
> Before you do any of the above, verify that the shackle (you called this
> "clevis") that will pass through the guy attachment plate will actually
> pass through the combination of the two attachment plates while in the
> same angle in which they will be installed on the tower!!! I had to
> ream the holes out of mine WHILE ON THE TOWER when the shackle bolt
> would not fit!!! (Even though I tested this on the ground before trying
> it on the tower.)
> Speaking of that, if you have enough "meat" left on the existing guy
> attachment plates, why not consider reaming them out on the tower once
> the existing guy is removed?? Then strip and paint and install the new
> guy...this would eliminate issue#2.
> I would also recommend having the new plates galvanized if they are not
> Also, referring to my suggestion of repositioning the guys to 117 ft.
> The closer you have the guys to the top of the tower, the less moment
> you will have above the guys. Frank, W3LPL, recently described his
> situation with the tops of the towers above his top guy set.
> That's all I can think of for now. Good luck with it.
> Bill, N3RR
Date: 97-03-09 23:28:20 EST