[AT] Iron and lots of it, now nylon rope

[charliehill]

Len, I do a version of your method of tree cutting and it works great.  Just 
don't put too much presure on your tow strap.  If you tie the line 20 feet 
up the tree above the cut point and put 200 lbs of pull on the tow line, you 
are putting close to 4000 ft lbs of torque on the tree at the cut line 
(depending on the angle of the strap from the tree to the tow vehicle). 
Raise that to 40' up the tree and 1000 lbs on the tow line and you are up to 
40,000 ft lbs.  Either number is enough to cause some problems and create 
some danger while you are cutting.

Charlie


----- Original Message ----- 
From: "Len Rugen" <rugenl at yahoo.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Tuesday, May 11, 2010 7:39 AM
Subject: Re: [AT] Iron and lots of it, now nylon rope


> We somehow acquired a bundle of nylon strapping, 3 loops, total 6
> layers, about 120' long of 2" web.  I think it was used by the Air Force
> to throw things out of cargo planes.  I took it apart, none of my
> tractors can break a single strap unless it gets cut.  I tie loops on
> the ends with "water knots", so no metal hooks.  It's great for towing,
> no jerks.  It's also great for solo tree cutting.  Hook the strap high
> in the tree, drive the tow vehicle out until the stretch stops it.
> There is enough pull in the strap to pull the tree over when it's cut.
> A chain will go slack when the tree moves a few feet, then it can fall
> in nearly a 180 degree arc, with the strap, they go within a much
> narrower arc.
>> And I'd have been one of them Herb. Its hard to believe just how much
>> stretch there is in a big plastic rope. No need to ease into the load, 
>> just
>> drive away with the tractor and the rope will stretch until the stuck
>> implement comes out or the tractor runs out of traction. Or worst case
>> scenario, something else breaks. You never want to use a chain in
>> combination with a stretchy tow rope.
>>
>> Ralph in Sask.
>>
>>
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at 





=======
Email scanned by PC Tools - No viruses or spyware found.
(Email Guard: 7.0.0.18, Virus/Spyware Database: 6.14970)
http://www.pctools.com/
=======