Clint KY
Well-known member
Are the tachs offered on EBay for less than $15 adequate for checking the RPM of an outboard? I pick up a new project boat Friday and know the way to check if it has the proper propeller is to use a tach. I never worried about it before because there were very few props offered to fit my 25HP Evinrude, but the new boat has a 50HP and I noticed the choices are much greater. The OP has installed a Whale Tail and he said it comes up on plane faster with it. The fact he bothered to do that tells me the boat may be mis-propped.