Does anyone have any calculations on flame arrestor size and CFM?
My brother is dropping the HP 500 in his 22 Donzi today. His old one is off a 525 SCI and we're pretty confident it is too tall to fit under the hatch... I think it is a 3" unit.
I see Gaffrig makes a few 2" arrestors, but what is the right size to get? What kind of power loss, if any?