On 4/3/2014 1:06 PM, Richard (Rick) Karlquist wrote:
All of the "worm gear" winches I've seen were not true worm gear, worm
gear wheel, which have very little friction, but a tremendous gear ratio.
All the winches had a worm gear, but in place of the worm gear wheel,
they had a pair of stamped spur gears stuck together with the teeth
offset enough that the angle allowed the worm gear to kinda fit/mesh in
the angled slot.
These have a lot of friction because the gear mesh is not a good one in
addition to the gear ratio. OTOH the appropriate worm gear wheel would
likely cost more than the whole winch and most importantly, they work
and are inexpensive!
73
Roger (K8RI)
Worm gear winches have a lot of friction, which
roughly doubles the turning effort. If they
didn't have all this friction, they would free
wheel down. The considerably heating of the
worm gear is also evidence of friction.
Rick N6RK
On 4/3/2014 8:51 AM, Jon Pearl - W4ABC wrote:
Hi Gerald,
Have you given any consideration to a worm gear drive?
Dutton-Lainson lists several conventional 'brake' style hand winches on
their site but they also offer several worm gear styles.
WG2000: http://www.dutton-lainson.com/proddetail.php?prod=11001
Description: "2000 lb Worm Gear Winch with 5/8 inch hex drive. Comes
with mating handle that can be removed easily without tools. Also allows
the winch to be operated with a power drill hooked directly to the drive
shaft."
Specs and Model Comparison (WG2000 in middle of list):
http://www.dutton-lainson.com/wgspecs.php
Hex Drive Worm Gear Video: http://www.dutton-lainson.com/LUYqVE1R2KA.php
Two Speed Winch Video: http://www.dutton-lainson.com/Jo3Zgfxuxk8.php
I'm impressed that their products carry a warranty; are made in America;
they offer specs and they actually list repair parts.
73,
Jon Pearl - W4ABC
www.w4abc.com
On 4/3/2014 9:52 AM, Wayne Kline wrote:
Hi Gerald
the Fulton 2500 is a single speed winch...a dual speed winch
takes LESS effort but more revaluations.
I have two 3200 lb dual speed winches ( old model with the removable
handles ) this is a dual speed on Ebay
http://www.ebay.com/itm/Fulton-T2605-Two-Speed-Trailer-Winch-2600lb-Capacity-/200708173399?pt=LH_DefaultDomain_0&hash=item2ebb23ae57&vxp=mtr
I never used the newer shift gear style ??
Wayne W3EA
From: KC4RN@comcast.net
Date: Thu, 3 Apr 2014 08:23:00 -0400
To: towertalk@contesting.com
Subject: [TowerTalk] Fulton 2500 winch single or dual speed?
Good Morning All,
I need to replace the winch on my Hy-Gain 72 foot crank up tower.
Do I want a single or dual speed winch? I do not know what is on the
tower now other than it is a Fulton 2500.
Being disabled, I don’t have the upper body strength anymore to crank
the tower to 72 feet. I barely get the tower up to 50 feet.
Will a dual speed help if I don’t already have one?
I looked at price of a US Tower Power Winch, but that sure is out of
my price range.
Thanks in advance and 73,
Gerald - KC4RN
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