Quick Answer

Build the Sudden Rush by focusing on the pre-slotted airframe and 54mm motor mount assembly, using the Kevlar tether with sewn loop for reliable recovery. This guide walks you through each critical step.

Why the Sudden Rush Build Demands Careful Preparation

The Sudden Rush is a reworked high-power kit designed for dual-deploy straight out of the box. Its pre-slotted phenolic airframe and .093 G-10 fiberglass fins save time, but the urethane tail cone and 54mm motor mount require precise alignment to avoid fit issues. Take your time on the initial dry fit.

Sudden Rush Assembly Steps

  1. 1. Dry Fit the Airframe Components: Slide the motor mount tube into the pre-slotted phenolic airframe without glue. Check that the urethane tail cone and plastic nosecone seat properly. Mark alignment lines for the fins and rail guides. Common mistake: Forcing the tail cone can crack it. If tight, sand the cone lightly until it slides freely.
  2. 2. Bond the Motor Mount Assembly: Apply epoxy to the 54mm motor mount ring and centering rings. Insert the mount into the airframe, ensuring it is square. Let cure fully before handling. Checkpoint: Use a wrap of tape as a depth stop so the mount doesn't shift forward during curing.
  3. 3. Attach the Fiberglass Fins: Apply epoxy to the fin roots and insert them into the pre-cut slots. Use a fin alignment jig to keep them perpendicular to the airframe. Wipe off excess epoxy before it sets. Common mistake: Skipping the alignment jig leads to crooked fins and unstable flight. Take the extra few minutes.
  4. 4. Install the Kevlar Tether and Rail Guides: Thread the Kevlar tether through the pre-drilled hole in the forward centering ring and tie a secure knot. Epoxy the rail guides along the marked lines, keeping them parallel to the airframe axis. Checkpoint: The sewn loop on the tether should face forward for easy parachute attachment later.
  5. 5. Mount the 54mm PRO Motor Retainer: Screw the retainer onto the exposed motor mount tube. Apply a thin layer of epoxy to the threads for a vibration-proof hold. Let cure. Common mistake: Overtightening can strip the threads. Hand-tight plus epoxy is sufficient.
  6. 6. Final Assembly and Recovery System Check: Attach the nosecone and shock cord. Test the dual-deploy setup by pulling the parachute out and verifying it releases smoothly. Install the ejection charge canisters. Checkpoint: Perform a ground test of the ejection charges to confirm the parachute deploys at the correct altitude.

Product Facts

  • Sudden Rush: The Sudden Rush features a pre-slotted phenolic airframe, plastic nosecone, urethane tail cone, 54mm motor mount, 54mm PRO motor retainer, Kevlar tether with sewn loop, and .093 G-10 fiberglass fins. The pre-slotted airframe and Kevlar tether simplify assembly and improve durability, but the urethane tail cone may need sanding for a snug fit.

    Sudden Rush

    Sudden Rush