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Air Propeller Blades Substitution Procedure
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1. Flange Removal |
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- Unscrew the bolts
- Remove the flange
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2. Blades Removal |
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- 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.
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- Make the same operation for all the blades
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3. New Blades Preparation |
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- Put the new blade in the correct position without forcing
- The blade root must be on the same plane of the hub
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- 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
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- Number the blade roots and the corresponding hub slots
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4. Blades and Hub Slots Preparation |
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- 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
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5. Filling Mixture Preparation |
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- 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)
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- The best room temperature for the application is 20° C. If the room temperature is higher (around 30° C) the application time is reduced
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6. Mixture Application and Blades Fixing Procedure |
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- Apply the mixture on the hub slot
- Apply the mixture on the blade root
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- 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
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- After 30 minutes, remove the filling mixture excess with a chisel
- The propeller will be ready after a curing time of 24 hours
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