[TowerTalk] Desired play (gap) between steel tube leg and sleeve on Rohn 25

[Roger (K8RI)]

ROHN is very specific about NOT drilling out bolt holes due to too much 
galvanizing, or any other method that will remove galvanizing. We use 
taper pin punches to open up bolt holes. For a tower leg I'd get some 
one to turn a mandrill of the proper size, grease it up and drive it in. 
Make sure it has some sort of handle to allow pulling it back out.  The 
same is true for the leg that slides in. You'd need a mandrill of the 
proper size that slides over it.  Again, grease it up and drive it on. 
Make sure there are no sharp edges that will remove galvanizing.

ROHN 45 is very difficult to put together on the ground.  I use a rubber 
hammer to tap against the tower legs and the pieces just dropped in place.

73

Roger (K8RI)

Leonard Els wrote:
> I now believe it is a Rohn 45 not a 25.  It could well be they were
> bolted too tight before.  They just don't fit easily (even with a bit of
> force).  That's why I was thinking of opening up the sleeve (coupler) a
> little - I do have a honing tool which I could use.  But was curious to
> know what the design specs were - i.e. how much gap there should really
> be between sleeve and leg.  Maybe someone with a Rohn 45 will be able to
> say.
>
> --
> CrazyHorse
>
>
>
> -----Original Message-----
> From: N3XX [mailto:n3xx at charter.net] 
> Sent: Tuesday, February 24, 2009 4:28 PM
> To: Leonard Els; towertalk at contesting.com
> Subject: Re: [TowerTalk] Desired play (gap) between steel tube leg and
> sleeve onRohn 25
>
>
> I have found it difficult to put them together on the ground (laying 
> parallel to the ground), but pretty easy when building them vertical.  I
>
> just rock the upper section a little, and they slide right in. You might
> have a problem if they were bolted down too tight previously, and 
> are no longer perfectly round.
>
> GL - 73,
> Tim - N3XX
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