DU-BRO 101: How to Install and Use a Pull-Pull System for RC Airplanes
A properly installed pull-pull control system delivers smooth, precise movement to your RC airplane’s rudder or tail-wheel steering. In this DU-BRO instructional video, you’ll learn exactly how to set up, tension, and adjust a pull-pull system for optimal flight performance. These lightweight systems are popular in aerobatic, scale, and sport aircraft because they reduce slop, minimize weight, and maintain consistent control feel.
Before you begin, make sure you have the right tools and parts. You can find everything you need in our Pull-Pull Accessories Collection, along with related components in Control Hook-Ups and Pushrods & Accessories.
⭐ Choosing the Right DU-BRO Pull-Pull System
DU-BRO offers several sizes to match different aircraft types:
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Micro Pull-Pull System (#846) – for small park flyers & lightweight models
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Standard Pull-Pull (2-56) (#517) – ideal for sport and trainer aircraft
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Standard Pull-Pull (4-40) (#518) – perfect for medium & larger models
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Heavy Duty Pull-Pull (#881 & #883) – recommended for large scale and high-stress aerobatic airplanes
For additional hardware, browse our Hardware Kits or Fasteners categories.
🛠️ Step-by-Step Installation Guide
1. Gather Your Tools and Supplies
Before starting, prepare your crimping tool, heat gun, clevises, threaded rods, shrink tubing, and pull-pull line. If you need tools, check out our Tools Collection.
2. Assemble the Control Horn (Heavy Duty Systems Only)
The heavy-duty versions require simple horn assembly. Follow the kit instructions to ensure a strong, slop-free connection to the control surface.
3. Assemble Your Clevises
Install the clevises onto your threaded rods. Make sure they thread smoothly and allow for later fine adjustments.
Need replacement clevises? See our Kwik Links / Clevis Collection.
4. Cut and Loop the Pull-Pull Lines
Cut the lines slightly longer than needed—you’ll trim excess later. Create your loops, test the tension, and be sure the lines cross properly inside the fuselage for equal pull.
5. Crimp the Connections
Slide the crimp sleeve over the cable, form your loop, then crimp firmly. A properly crimped sleeve ensures your system will hold tension during high-stress maneuvers.
6. Trim Excess Line and Fine-Tune Adjustments
Remove extra cable, then use the threaded rods for final alignment and tension adjustments. Your control surface should center cleanly with consistent tension.
7. Apply Heat Shrink for a Clean, Secure Finish
Heat-shrink tubing keeps the crimps neat, secure, and vibration-resistant. Once complete, tighten the clevises and confirm zero slop in the system.
For additional finishing materials, explore our Heat Shrink Tubing options.
🎯 Why Use a Pull-Pull System?
A DU-BRO pull-pull setup provides:
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Smoother control response
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Reduced weight compared to pushrods
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Equal tension on both sides
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Better precision for aerobatics
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Cleaner internal routing
Whether you're flying 3D, scale, or sport models, this system offers professional-grade performance and reliability.
✈️ Final Thoughts
Installing a DU-BRO pull-pull system may look complex at first, but DU-BRO’s step-by-step video makes it simple for pilots of all skill levels. With the right parts, careful routing, and precise tensioning, you’ll enjoy exceptionally smooth and accurate control in every flight.
Browse our full lineup of RC Airplane Accessories and Made-in-USA DU-BRO Hardware to complete your build with confidence.
