Estes Phoenix Bird Build Part 4 Centering Rings

The notch for the engine hook wasn't high enough to allow for up and down movement. The rotary punch was used to make the notch higher.



 



I'd forgotten to make a notch for the Kevlar cord.

A rat tail diamond file was spun to drill a hole in the upper ring.

Here's the 135 lb. Kevlar tied in place below the upper centering ring.

Notice the engine hook retainer ring is split. The substituted ST-7 motor mount tube is wider than the thinner blue tube supplied in the kit.  I could have used a wrap of black electrical tape but that would have required more refitting of the
TTW notch on the fin tabs.