Talk:IBLS Coupler and Safety Chain Standards

• 2.5" Standards
  • http://www.7-plus-ngm.org/2011/arch1104.htm

--Dnevil (talk) 13:10, 20 March 2013 (CDT)

Rick Henderson made the following observation:

I just noticed the specs on safety chains use a chain length that is often too short to work with the way the receiver hook is drawn, twisted away from the coupler.

When the chain is not in use, it should be hooked to its own receiver hook, over or under the coupler shank. At 5" spacing on the hooks, a 6" chain will not easily slip over the receiver hook twisted out. It should be closer to 8". If cars are close due to short coupler shanks, the 2nd or 3rd link from the end can by used on the receiving hook of the other car.

As drawn, the recommended chain length for 7-1/2 gauge should be "7" +/- 1" at a minimum.

• Loop Shank for 2" scale
  • http://www.chaski.org/homemachinist/viewtopic.php?f=8&t=95911&sid=77801beb3efa70a401fad09c184ba69c