2.2.3 Transmission Capability of Drive Chains

We have derived fatigue limits by testing. But just as you can't judge a person by examination alone, so we must also check whether the results of our tests can be put to practical use. Some questions remain:

The chain's fatigue limit (see Basics Section 2.2.2) is tested in a linear configuration (Figure 2.1). But in wrapping transmission, the chain is engaging with the sprocket. Is there any difference between these two?
A new roller chain is used. Is there any decrease in the strength of a used chain?
Do connecting links or offset links have the same strength?

To answer these questions, a number of experiments and investigations were done. The following are the findings.

2.2.3.1 Difference Between Linear Tension and Wrapping
2.2.3.2 Effect of Normal Chain Wear on Fatigue Strength
2.2.3.3 Strength Differences Between Chain and the Connecting Links and Offset Links