[John Neun]

#25 chain is great, but for final drive, we learned the hard way that it is too light. We actually broke links in half at the "neck" in their cross section. B. Toth is of course right when he says to let the stresses be your guide, BUT keep in mind that the drive train sees high shock loading during maneuvering. Stresses can impulsively be very high compared to our usually static analysis. The "slow" end of the drive train is the highest chain load end, so it may pay to lighten the chain toward the motor, but be very careful with #25 on final drive. I'd love to show you the brooken pieces; I would not have believed it if I had not seen it.

Good luck!