100 Pitch Chain

https://www.surpluscenter.com/item.asp?item=1-1163-100&catname=

Working strength of 3000 lb for 100 pitch roller chain - [2].

• Surpluscenter shows 24k lb tensile strength. Wikipedia says working load should be 1/6-1/9 of tensile strength.
• This implies 2700-4000 lb working load.
• This premier chain says 6500 lb working load. [3]

Specs

1.25" pitch

Sourcing

• $69 for 10 feet - [4]
• $120 at Surpluscenter. $400 for premier chain.

Sprockets

• Info on available minimum sizes - [5]
  • 7 tooth sprocket is minimum [6]

80 Chain

• 

  80 Chain. - FreeCAD -File:80chain.FCStd. Source - [1]

60 Chain

• Working load of 2000 lb [7]

Links

• Sprocket Generator