Rear tailspring assembly

The tailspring must take substantial abuse from bad landings.  It is a stout assembly, reinforced with carbon fiber.

Start by sanding each of the 6mm tailboards.  You will laminate them together in the next step.

tailspring boards

Tailspring boards, set of 2. Sand in preparation for lamination.

tailspring boards gluing

Using a high quality wood glue, clamp the tailspring boards together.

After allowing the glue to set, remove the clamps and remove excess glue.  Sand until perfect.

If you are using a composite tailspring, drill and bolt together the assembly as shown in the following two photographs:

tailspring assembly

Drilling and bolting the tailspring assembly together.

tailspring assembly 2

Another view of the same composite tailspring assembly, bolted together.

You will need to ensure that your rudder post is trimmed flush to the bottom fuselage line:

tailspring gluing preparation 2

Bottom of aluminum rudder post trimmed and sanded flush to fuselage lines.

Place the assembly into the correct flush position, and mark the location of the heads by pushing into the foam.

tailspring gluing preparation 4

Correct positioning of the tailspring assembly. Push down to mark the bolt head locations.

tailspring gluing preparation 3

Bolt head location for tailspring assembly indented into foam.

Using a flat bit, (or a sharp knife), open up the bolt head areas.  Then glue together using Gorilla glue.

tailspring gluing preparation 5

Gorilla glue applied to foam.

tailspring gluing preparation 6

Tailspring assembly held in position with weight, tape.

To be continued….

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