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Posted by David Sherman on Monday, May 19, 2008 at 16:09:13 :
In Reply to: winching posted by copey on Monday, May 19, 2008 at 15:44:04 :
Pulling cedar (large) out across a swamp will put pw (not large) out into swamp, unless you chain pw to stump in which case only part of pw will go into swamp. Or so it seems to me if your cedars are anything like coastal cedars. Maybe you could get away with it by using double blocks on both ends if you had about a mile of cable. Unless you need the whole cedar in one piece, why not cut it up in the swamp and haul out the shake bolts or whatever in small pieces?
I knew of a guy who dragged a very big old-growth fir log through a substantial river (strictly against the law in Washington state) by using an ancient one-lunger winch with a ratchet mechanism. He figured that if he pulled it slowly enough, it wouldn't stir up any mud and nobody downstream would get suspicious. The way this old winch worked was it had a one-lunger engine that would spin up a heavy flywheel. One the flywheel got up to speed, a pawl would automatically drop into a ratchet wheel and all the energy in the flywheel would go into pushing the ratchet wheel one notch forward. When the flywheel slowed down, the pawl would disengage and the flywheel would spin back up again. There was gear reduction between the flywheel and the pawl, and plenty more between the ratchet wheel and the winch drum. Suffice to say the cable and the frame were very stout. I saw the machine, though not in action.
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