Air Propeller Blades Substitution Procedure

Air Propeller Blades Substitution Procedure

• Unscrew the bolts
• Remove the flange

• Turn the propeller on the opposite side
• Using a punch, hit in the hole situated near the blade root in order to slide it out
• If the holes are not present, use a piece of wood and hit near the blades root in order to slide it out.

• Make the same operation for all the blades

• Put the new blade in the correct position without forcing
• The blade root must be on the same plane of the hub

• If the blade root plane is a different respect to the hub plane, remove the blade and check the contact points (some polishing on the root)
• Sand the contact point with sanding paper P24
• Repeat the above operations in order to find the correct blade position

• Number the blade roots and the corresponding hub slots

• Clean the slots with acetone
• Spread some grease on the external parts of the hub slots
• Put a mold release film inside the hub slots
• Spread some grease on the external sides of the blade root

• Mix the catalyst (VANTICO HY 2404) with the base (VANTICO RENGEL SW 404) using a weight ratio of 1:10 (25:250 g for 5 blades)

• The best room temperature for the application is 20° C. If the room temperature is higher (around 30° C) the application time is reduced

• Apply the mixture on the hub slot
• Apply the mixture on the blade root

• Put the blade root in the hub slot (using the correct numbering)
• Hit the blade root in order to achieve the correct position
• Remove the mixture from the upper part of the hub
• Repeat the above operation for all the blades
• Fix the flange by the bolts

• After 30 minutes, remove the filling mixture excess with a chisel
• The propeller will be ready after a curing time of 24 hours