Ignoramus9168 wrote:
As I mentioned earlier, I installed a Harbor Freight "truck crane" on
my truck. When trying to lift a 300 lbs rotary table into my truck,
using the crane, the winch jammed. It jammed because somehow the drum
went off its axis by about 1-2 mm.
Its other problem is that the hub ot the Harbor Freight winch was very
thin (less than 1 inch, for a 1/4 inch cable). As a result, the cable
would not wind nicely around the drum and it was a mess causing some
kinks.
After this jamming, I briefly considered fixing the winch, but decided
against it.
Instead, I bought a McMaster winch 3644T53. I also bought a cover for
it (shown on same page 1388). The price was $28 + $7.
I did not fit existing holes on HF crane exactly, so I had to mill
one hole bigger, about 2mm in one direction.
The result is much nicer -- it looks way better with a cover, and the
hub is 2 inches thick, so the wire rope wraps very nicely around the
hub without kinking.
That said, I am now considering replacing HF rope also, and would like
to know if "all wire rope is the same", or perhaps some wire rope is
more flexible than other kinds of wire rope. I have been reading
McMaster's description of various wire rope construction methods (6x37
etc) and it seems that this Harbor Freight wire rope is not
greatest. (which I sort of expected).
For those who would offer a snide remark such as "why did you buy this
crane if so many components are crap", I would answer that the crane
body does seem to be very sturdy, and a comparable brand name crane
would cost way above $1,000. I have never seen them sold, used.
Anyone has any experience? Would I gain anything from spending to buy
more expensive wire rope?
i
The finer the individual wire strands the more flexible the cable.
However the downside is that the finer wires break easier as well.
There is a 6/26 construction that tries to mitigate this by using fine
wire inside and covering it with a heavier outer wire wrap. Gives the
stuff some armor BUT it also makes it stiffer.
I use a 7/19 stainless 5/16" as the winch cable on the Blazer and we
use the same stuff on the winch on the rescue we have in the station.
Works great and is tough stuff.
Got it from.
http://www.farmtek.com/farm/supplies/home
--
Steve W.
Near Cooperstown, New York
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