Towertalk
[Top] [All Lists]

Re: [TowerTalk] electric hoist/ winch

To: towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] electric hoist/ winch
From: Patrick Greenlee <patrick_g@windstream.net>
Date: Fri, 28 Feb 2014 09:19:35 -0600
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

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
                                        
_______________________________________________


TowerTalk mailing list

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>