Be careful not to compare apples to oranges here.
My 15 yr old tilt raising fixture for the UST 89' tower uses three
pulleys
for mechanical advantage. My 3 yr old LM-470 tilt raising fixture uses
only one pulley for mechanical advantage.
Furthermore, the winch for the UST was the k2550 (~40:1 gearing)
versus the LM-470's k1550 (15:1 gearing).
Winching the UST tower is easy but winching the LM-470 was very
difficult until I replaced the k1550 with a k2550.
Later I modified the LM-470 tilt raising fixture and cabling to use
three pulleys also and it cranks easily. I probably expend as much
energy moving my arm and hand as I do raising the tower?
I have not used the pivot-at-the-top-of-the-tower method of tilting
the tower (which has no pulley mechanical advantage, relying only
on the winch and tower balance) because of workmanship issues.
I would be interested in how well that works and why would anyone
want to motorize it?
k7puc
----- Original Message -----
From: "Julio Peralta" <jperalta@tampabay.rr.com>
I have an 89' UST tilt over crank-up. I use a 1/2 DeWalt drill motor
that I
bought from Home Depot for less than $100. The drill has an approx.
1HP
motor and when coupled to the shaft that the hand crank goes on will
stand
up the 89' UST very nicely.
Julio, W4HY
----- Original Message -----
From: "Joe Giacobello" <k2xx@swva.net>
Has anyone ever motorized the tilt-over winch on an LM-470 or
similar
tower? If so, I'd be interested in knowing how you did it. I know
a
friend of mine once fabricated his own tilt tower that was perfectly
balanced around the pivot points so that he could tilt it by just
manually pulling up on the base and pushing it into a horizontal
position. Maybe counter weighting the LM-470 so it was more
balanced
might allow a motorized winch to do the same thing easily. Just
curious
what you mechanical gurus have done on this front.
73, Joe
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