Skip to content
propbench
Outboard · propeller size

Yamaha F50LB (tiller) propeller size

The Yamaha F50LB (tiller) is a 50 hp outboard with a 1.85:1 gearcase. In one published sea trial it ran 5,800 rpm at full throttle on 11.625 in props of 11 in pitch. The right prop lands full throttle in the engine's range with your normal load.

Power50 hprated
Gearcase1.85:1ratio
Sea trials1published tests
Pitch run11 inin those tests
Free checkPrefilled
MotorYamaha F50LB (tiller)
Engine1 × 50 hp
FuelPetrol
Boatyours, in the check
Prop todayyours, in the check
Free · no account · under two minutes
Specifications

F50LB at a glance.

Maker
Yamaha
Model
F50LB (tiller)
Power
50 hp
Gearcase ratio
1.85:1
Full-throttle rpm in published tests
5,800 rpm
Props in those tests
11.625 in diameter, 11 in pitch
Prop lines in those tests
Yamaha Yamaha Aluminum
Source: Yamaha and boat builders' published performance tests, linked in the sea-trial table. Other variants may differ.
Sea trials

Boats with a Yamaha F50LB (tiller) and what they ran.

BoatPropWOT rpmSpeedConditionsSource
G3 Outfitter V167 T · 16.58 ft11.625 × 11 in
Yamaha Aluminum, aluminium, 3-blade
5,80026.1 kn1 × 50 hp · 665 kg (1,467 lb) as testedyamahaoutboards.com
Published tests, cited. Speeds as recorded in the source; weights as tested.
Related

Other 50 hp outboards.

Cross-brand options appear as other makers' engines reach the data.

Questions

About the Yamaha F50LB (tiller).

What rpm did the Yamaha F50LB (tiller) reach at full throttle in published tests?

5,800 rpm across one published test, with top speeds of 26.1 kn. Each test is listed above with its source.

What prop size did boats with a Yamaha F50LB (tiller) run?

11.625 × 11 in on the G3 Outfitter V167 T. The right size for your boat depends on its weight, hull and load; the free check works it out.

What is the Yamaha F50LB (tiller)'s gearcase ratio?

1.85:1, per Yamaha's published data.

Find your Yamaha F50LB prop.

Free · cross-brand