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BackSwept Propeller

Blade Angle Adjustment

Blades are set to the specified blade angle at the

factory. If adjustment in the field is required, use the

following method:

1. Lay the hub on a horizontal surface with the

concave (air leaving) surfaces of the blades facing

upwards.

2. Loosen the blade retaining bolts until they are

finger tight. At this point, the blades should rotate

in their sockets when grasped firmly and twisted,

but should not turn on their own.

3. Place an angle meter or protractor across the two

blade angle position marks on a blade. See Figure 1.

4. Twist the blade to the desired blade angle.

5. Repeat steps 3 and 4 for the remaining blades.

6. Re-tighten the blade retaining bolts to the torque

shown in Table 1, making certain that the blades

stay positioned at the desired angle. Work in a

star pattern, working your way up to the desired

torque in steps. Tightening one bolt to the full

torque before moving on to the next can crack

the hub.

Mounting the Propeller Assembly on the

Shaft

The BackSwept Propellers are furnished with hubs

that have a tapered bore. A split-tapered bushing

is used for mounting the propeller assembly to the

shaft. When properly assembled, the bushing grips

the hub and the shaft with a positive clamping action.

See Figure 2.

 The bushing barrel and the bore of the propeller

hub are tapered. This assures concentric mounting

and a true running propeller.

 The cap screws, when tightened, lock the bushing

in the propeller.

 The bushing is split so that when the locking cap

screws force the bushing into the tapered bore,

the bushing grips the shaft with a positive clamp-

ing fit. This will withstand vibration and punishing

loads without loosening.

 The propeller and bushing assembly is keyed to

the shaft and held in place by compression. This

gives added driving strength.

General Installation, Operation and Maintenance Instructions For Aerovent Products

IM-111

January 2012

Table 1

HUB SIZE

BLADE BOLTS

N/m (ft. lbs)

HUB BOLTS

N/m (ft. lbs)

150mm (6") 5.5 ~ 8 (4 ~5.9) 10.7 (7.9)

225mm (9") 5.5 ~ 8 (4 ~5.9) 21.7 (16)

255mm (10") 30 (22) 21.7 (16)

350mm (14") 30 (22) 39.3 (29)

Figure 1

Figure 2

WARNING

Disconnect power before installation and

maintenance. Failure to do so can result in

severe injury or death.

1 2

Résumé du contenu

Page 1 - BackSwept Propeller

Page 2 - WWW.AEROVENT.COM

Put the bushing loosely into the bore of the hub. Do not press or drive. Start the cap screws by hand, turning them just enough to engag

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Aerovent IM-111 Manuel d'utilisateur

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