Spinner Prop Hub set for Fiala

Spinner Prop Hub Set for Fiala FM250

Complete spinner prop hub set designed for the Fiala FM250.

For the larger Fiala version (not shown), the design is identical and features the appropriate Fiala/Valach guide-hole pattern.

This is a complete, ready-to-install kit.

Dimensions:

• Overall hub length: 3 in.

• Hub diameter: 2 in.

• Backplate diameter: 2.35 in.

The 5-piece set includes:

• Spinner prop hub

• Backplate, pre-drilled for the Fiala FM250

• Long mounting bolt for the FM250 installation
  
  

Installation is straightforward: remove the original propeller washer/prop plate supplied with your engine, install the new hub and backplate, and you are ready to go.

Important Installation Note for Wooden Propellers

Extra care should be taken when installing this hub with wooden propellers. Because the hub extends approximately 3 inches, even a very small amount of uneven bolt tension can cause the backplate to sit at a slight angle. This can result in visible wobble at the end of the hub.

Tighten all propeller bolts gradually and evenly. After installation, run the engine and check the hub for true rotation. If any wobble is visible, stop the engine and correct the bolt tension before operating the engine further.