Wednesday, September 26, 2012

Vans Aircraft RV-12 Airplane Build, Section 27 Rudder Pedals & Brake System (part 1)

Reference: page 27-02; 1.0 hours

This blog entry starts the assembly of the rudder pedals and brake system for the RV12 aircraft kitted by Van's Aircraft.

Step 1: Split the F-1235A Inbd Rudder Pedal Block and the two F-1235B Outbd Rudder Pedal Blocks as shown in figure 1 on page 20-02 of the RV-12 aircraft plans. Mark the split parts so that they remain together and so that they can be assembled in their original, pre-split orientation.

Builder's note: As can be seen in the pictures I used my band-saw to separate the parts and it worked very well.

Step 2: Clamp the WD-1206 Rudder Pedals using the Rudder Pedal Blocks as shown in figure 2 of Van's Aircraft's plans on page 27-02. Be sure the rudder pedals are oriented as shown in the figure (long end and short end together), and place the heads of the bolts on the bottom so that the clamped assembly will lay flat on the work surface.

Step 3: Slide the WD-1211-L & -R Brake Pedal Torque Tubes into the WD-1206 Rudder Pedals as shown in figure 3 on page 27-02.

Step 4: Be sure that the F-1235 A & B Rudder Pedal Blocks are all flush against the work surface (clamp down if nessary), then slide one of the remaining Pedal Torque Tubes (doesn't matter which one) into both of the WD-1206 Rudder Pedals as shown in figure 3 of the plans. This will lock both rudder pedals into the neutral position.

Builder's note: I had to fight with the assembly to get it to slide together. I think this was due to warpage from the welding process.

Step 5: Temporarily attach the Right and Left Brake Master Cylinders to the Rudder Pedals and Brake Torque Tubes as shown in figure 4 on page 27-02 of the RV-12 plans. The hardware shown is called out on page 27-03, figure 3.

Builder's note: To get the clevis pin to fit through the bracket holes I needed to ream them with a #12 drill bit.

Step 6: Slide the Brake pedals over the Brake Redal Torque Tubes and against the Brake pedal as shown in figure 4. Use a square to make sure the brake pedals are vertical (or perpendicular to the work surface), then clamp the brake pedals to the rudder pedals as shown.

That completes page 27-02. Until next time!