The tilt-over method described was originally designed
by Gerry, W3GM (SK). He had 7 towers at his M/M
contest station done this way. I believe that this is
known as the "falling derrick" method in the
engineering world. I have used this method with my
tower (60ft R25) and others have also done so, as
K3ANS did. It works great if you have the area to lay
the tower down. Four of W3GM's towers were 100 ft and
we had them up and down MANY times.
73, Stew K3ND
--- jacobsen_5@msn.com wrote:
> Hi to all. FWIW:
>
> A month or so back there was a thread going on "tilt
> over" towers. It rattled some neurons in my brain
> and got the memory going. As luck would have it, I
> was going thru some old magazines and what did I
> come across??? Why the very thing tied into those
> neurons. ie: On the cover of CQ mag for April 1999
> is a picture of the "tip over" tower of K3ANS, Bill.
> Rather remarkable engineering. To bad there wasn't
> more info other than the picture description given
> for "On the Cover", if I may quote:
>
> " No, that's not a tragic disaster scene depicting
> the ultimate ham calamity. It's Bill Goodman, K3ANS,
> of Easton, PA, with his custom designed and built
> tip-over tower. The 105 ft Rohn 45 tower is mated at
> the base with 50 ft more of Rohn 45 to form an "L"
> which is hinged to the concrete base at the foot of
> the 105 ft tower. Those HUGE "angle braces" which
> join the two tower pieces into the "L". A winch at
> the far end of the 50 ft "leg" is used to tip the
> entire assembly, complete with its 5-el 20 meter and
> 3-el 40 meter Yagis. Three sets of guys in four
> directions keep the whole thing safely in the air."
> (The photo was taken by Larry Mulvehill, WB2ZPI)
>
> I guess if you want it bad enough it CAN BE DONE!!!!
> And this one is a thing of beauty. The picture
> probably doesn't do it justice.
>
> Thanks for the BW.
>
> 73 es GDDX
> K9WN Jake
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
>
http://lists.contesting.com/mailman/listinfo/towertalk
>
____________________________________________________________________________________
Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel
and lay it on us. http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|