Windowed pistons, when and why?

[Dennis Cahoon]

Anybody window any slugs today?

Nope!......don't need too.:msp_sneaky:

 

[Dennis Cahoon]

This is a look at the Woosner piston I'm using in my 250 bike saws. Ports not windows

 

[half_full]

This is a look at the Woosner piston I'm using in my 250 bike saws. Ports not windows

interesting. I recall tree monkey posting a pic of a piston that had a single round hole near the same location on a piston.