need info on this prop

[langevn]

hi looking to see what this prop is to it a ( PRB 4019 ss 1.6 x 2.50 ) like to know what prop that is compare to so i know if can be use on my boat

thank

[dasboata]

40 mm X 1.9 pitch ratio so 1.58" diameter X 3" pitch,,, kinda big !!

[zooma]

Not that big. Proboat uses a part number that does not follow the norm. It is a 1.6 inch dia x 2.5 inch avg total pitch. So the pitch ratio is 1.6, which they don't even say. Therefore 40.64 mm dia x 1.6 ratio for 63.5 mm avg total pitch in metric.

[langevn]

ok what prop can it be compare too so i know what it is iam a newbie on this stuff >???

ie : is it like a m447 >.........????

[TRUCKPULL]

A - 40.64 mm dia x 1.6 ratio
would be between a - 640 and a - 642 (example 640 = 1.6 ratio X 40mm Dia.)

Larry