The Turning Point Express Mach3 OS Propeller – 15.6×17 is a 3-blade propeller in the Express Mach3 family for larger-horsepower applications using the matching Turning Point hub system. Its 17-inch pitch gives this model a specific place within the range, making it a candidate for setups that need to bring engine rpm into the recommended operating window without moving to a higher-pitch propeller. Final selection should always be based on the boat’s current loaded performance rather than diameter and pitch alone.
Compared with a higher-pitch propeller in the same application, a 17-inch pitch will generally allow the engine to turn more rpm and can improve acceleration, while a higher pitch may reduce rpm and shift the balance toward speed. The 3-blade layout also gives the handling and efficiency characteristics associated with the Mach3 line. Those tradeoffs make this model most useful when the existing propeller’s wide-open-throttle rpm and on-water behavior are known before the change.
A compatible hub kit may be required, so confirm the engine, gearcase, shaft, rotation, and hub-system match before ordering. After installation, test the boat under its normal passenger and gear load and verify that wide-open-throttle rpm remains inside the engine manufacturer’s recommended range. Worth comparing against our other aluminum propellers.
- 17-inch pitch provides a distinct rpm and acceleration option within the Mach3 range.
- Best chosen by comparing current loaded wide-open-throttle rpm with the engine specification.
- Interchangeable hub compatibility must be matched to the specific engine and gearcase.
- Post-installation water testing confirms whether the propeller choice is correct for the boat.
