Why don't more people run PS3 chain instead of 325 on 50CC saws?

[chipper1]

The smaller pitch chains are designed for lower powered saws, so they use thinner, lighter components (tie straps, rivets, etc.). For example, Oregon only recommends their Type 91 (3/8 low profile) chain up to 40cc and 18" bars in some of their literature. I have certainly seen it on larger saws, but you can see where a 660 could snap it.

Philbert

Especially when the smaller chain is being leveraged at such a tight angle on the sprocket .