I'm sure this question has been answered in the past, but I cannot find it so forgive me for asking something so basic. Is there a general rule of thumb (such as for changing pitch) for what the WOT rpm change will be when going from a 3 to 4 blade prop of the same pitch?
I recently purchased a 1994 30 ft Scarab Sport w/ twin 1994 Yamaha 225 hp saltwater series 76 degV outboards. The motors are mounted on a Stainless Marine transom bracket. The problem I am experiencing is that at intermediate speeds (30-40 mph) the motors tend to "hunt" about +/- 300 rpm. I...
I recently purchased a 1994 30 ft Scarab Sport w/ twin 1994 Yamaha 225 hp saltwater series 76 degV outboards. Motors have approx 530 hrs each. Both motors generally run fine with the excption that the starboard motor has a tendency to overheat when I flush out the motor on the trailer using...
I recently purchased a 1994 30 ft Scarab Sport w/ twin 1994 Yamaha 225 hp saltwater series 76 degV outboards. Motors have approx 530 hrs each. Both motors generally run fine with the excption that the starboard motor has a tendency to run rough, bog and stall when accelerating from idle after...
