In MasterClass #—Pull-Pull Systems, hosts Joshua Orchard and Brian Schiller take a deep dive into one of the most precise control methods in RC aviation: the pull-pull setup. Using the Old School Model Works Minuette as their example, they demonstrate essential mechanics, share practical insights, and answer dozens of viewer questions. Along the way, they highlight why DU-BRO hardware remains the gold standard for builders who want strength, accuracy, and reliability.
Welcomes, Giveaways & Season 2 Teasers
The session starts with viewers checking in from across the world, each automatically entered to win a Minuette kit. Joshua and Brian tease MasterClass Season 2, promising content that both beginners and experienced builders will benefit from—especially topics rarely covered in mainstream RC channels.
Build Updates & Pilot Installation
Joshua shows updates on his current builds, including epoxied pilots and optional flying wires for securing the wing panels. The conversation leads into a poll: glow or electric Minuette? Both have pros, but viewers are split nearly down the middle.
For mounting pilots, hatches, and internal accessories, DU-BRO Button Head Screws are ideal for vibration-resistant, clean installation:
Pull-Pull Mechanics: Geometry, Precision & Control Authority
How Pull-Pull Works
Joshua demonstrates the core setup: two cables pulling in opposite directions to control a surface. Unlike pushrods, pull-pull systems eliminate flex and maintain consistent geometry over long distances.
He uses pushrod tubing as a guide to prevent cable abrasion against wood. Small touches like this dramatically extend hardware life.
Servo & Control Horn Geometry
One of the biggest lessons of the class is matching horn spacing:
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The distance between holes on the servo horn
must match -
The distance between holes on the control horn
Anything else introduces slack, asymmetrical throw, or flutter.
When installing control horns, builders consistently choose DU-BRO Control Horns for durability and adjustable hardware:
Preventing Flutter: Why Tension Matters
Joshua explains that flutter—rapid oscillation of the control surface—can destroy servos or even crash airplanes. The easiest prevention:
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Keep tension tight
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Maintain identical cable lengths
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Use proper crimping technique
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Ensure zero slop in clevises and linkages
For slop-free linkage, DU-BRO Swivel Ball Links provide smooth movement under tension:
Hardware, Crimping & DU-BRO’s Legendary Cable Quality
Joshua highlights the DU-BRO 256 Pull-Pull System, a nylon-coated cable that’s perfect for the Minuette’s size. Crimping technique matters—running each cable through the crimp three times ensures maximum mechanical lock.
DU-BRO’s pull-pull kit is one of the most widely used in RC scale flying:
Pull-Pull Systems
For reinforcing elevator or rudder joints, DU-BRO Clevises offer secure connections that won’t slip under tension:
https://www.dubro.com/products/nylon-clevis
Scale Details: Wing Pulleys, Inspection Windows & Cable Routing
Joshua shows off his custom machined aluminum pulley system—a true throwback to vintage aircraft that used cables instead of torque rods. The scale inspection window adds depth and authenticity, proving that performance and scale beauty can coexist.
Covering Prep, Oratex Plans & Next Steps
As Joshua prepares to cover the wings in white Oratex, he emphasizes running all wires and hardware before covering to avoid “fishing” later. Vinyl masks will complete the paint scheme once the structure is sealed.
For smoothing edges prior to covering, DU-BRO Kwik Sand Hand Sanders help maintain perfectly straight surfaces:
Final Notes, Events & Community Appreciation
From a Du-Bro hat giveaway to upcoming fun-fly events, the hosts close the episode with gratitude for the community that helped make DU-BRO’s 65th anniversary sale a massive success.
This session stands out as one of the most informative yet—an essential watch for any builder wanting precise control, cleaner mechanics, and long-lasting hardware.
