[TowerTalk] electric hoist/ winch

[Patrick Greenlee]

I have seen several items at "Northern China Tools" that are the same as 
items from "Harbor Freight from China" except for packaging, paint, and 
stickers.  Neither store has a monopoly on Chinese imports.

The hoist in question has an auto shutoff feature when the cable is 
fully retracted.  The rubber/plastic hockey puck looking thingy hits a 
bent wire thing attached to a switch.  It should be a fairly easy task 
to rig that feature to stop the hoist motor when the cable arrives at 
the limit you set.

Oh, YES, if you halve the line speed (insert a pulley) the max line 
tension will stay the same but the lifting force will double (minus 
pulley friction and lost energy flexing the cable... pretty negligible) 
and of course the hoisting speed will be cut in half. No free lunch. MGH 
capability per unit time is the same either single or double cable 
hoist.  (MGH is Mass, Gravity, Height) With a double line you can lift 
twice as much but in twice the time to the same height.

Patrick NJ5G


+++++++++++++++++++++++++++++++++++++++
On 2/27/2014 1:14 PM, Wayne Kline wrote:

The  chatter on hear about using a HF electric hoist, I think this is the same model and speck ?
  
just a FYI for anyone interested in that unit
  
   http://www.northerntool.com/shop/tools/product_120327_120327?tab=video-link&cm_mmc=Housefile-_-NIT_022714-_-consumer_022714-_-P3SeeVideo&cm_lm=w3ea%40hotmail.com&STATE=PA&HOT_MEM_CODE=HE&MARKETCODE=&om_rid=AAECjB&om_mid=_BTD0ToB84fJKtK
  
Wayne W3EA
  		 	   		
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