Re: Thanks!


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Posted by Willy-N [72.171.192.59] on Sunday, September 20, 2015 at 23:27:32 :

In Reply to: Re: Thanks! posted by John Eickhof [208.98.157.9] on Sunday, September 20, 2015 at 23:15:46 :

I was reading the one of the sites you mentioned about snatch blocks. This is what they say on sheave sizing.
Note that a snatch block’s wire rope-to-sheave diameter ratio is not the same as that recommended for crane and construction blocks. Since the height and frequency of the lift is not as much of a factor, larger sheaves are not as crucial to snatch block operations. However, provisions should be made to increase sheave size where the situation demands. Naturally a large sheave is an advantage insofar as bearing life and wire rope life are concerned.
So I feel it is OK to go smaller since it is not used like a Crain all the time. I am using Grade 100 Locking Hook with pressed on cable end. My Winch Shear Pin is 1/4" Brass on the drive shaft. I will pick up some more just in case. I did think the grade 80 or higher 3/8" chain would work?




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