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steel cable breaking strain !

February 27 2012 at 12:53 PM
Ged  (Login gedfinn)
Crosman Forum Member
from IP address 86.151.19.179


Response to Don't underestimate the (hidden) technical challenges Ged's looking at, Rob.

 

Hi,
On checking,I see that the breaking strain of the 2mm
( 3/32 )wire rope I am using, Is 950 Lbs !!!!!!
http://www.shopwiki.com/l/wire-rope-strength

When the sear holding the rear piston is released,
the pressure on the rope almost dissapears ,( They are both travelling in the same direction )
Thats in relation to the wire ?

Also when both pistons bounce back off the air cushion the load on the wire diminishes completely ?
I have some 1.6 mm wire ( Thats where I got the 500 Lbs breaking strain from )
And I might well use it ? ( Its well up to the task ) In my opinion.

In my opinion, the 2mm wire is at least 5 times over strength

Having said all of that, Lets not look for what might not work ! A larger wire or even the chain I have could replace it !

Until its up & Shooting, we will never know !!!
I also don,t think the pistons have to be balanced ( They will be ) Or even the same length ( They will be )
The pressure on compression will allways be equal on the face of both pistons, Even if one should arrive early ?

Only a shooting unit will give the answers,
All the best, Ged.


    
This message has been edited by gedfinn from IP address 86.151.19.179 on Feb 27, 2012 12:58 PM
This message has been edited by gedfinn from IP address 86.151.19.179 on Feb 27, 2012 12:55 PM


 
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