Product Description
Mitchell 84329 Drive Gear – High-Precision Engine for 310UL
The Mitchell 84329 Drive Gear is the primary mechanical power source for the Mitchell 310UL (Ultralight) spinning reel. As the "main gear" within this compact, modernized chassis, it is responsible for converting the torque from the handle into the high-speed rotation of the rotor and the vertical oscillation of the spool.
Designed for finesse applications where smooth operation is paramount, the 84329 is precision-machined from high-strength alloys. Because ultralight fishing often involves high-frequency casting and light-line retrieves, this gear is engineered to provide a "silk-smooth" feel while maintaining the durability needed to handle unexpected larger fish.
Product Specifications
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Part Number: 84329
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Component Type: Main Drive Gear
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Application: Modern Ultralight (UL) Series
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Material: High-strength Zinc-Alloy or Machined Aluminum (Generation dependent)
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Design: Integrated drive shaft for zero-play handle connection
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Origin: Genuine Mitchell Engineering
Compatible Models
The 84329 drive gear is the heart of the modernized small-body Mitchell series. It is a verified fit for:
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Mitchell 310UL (Modern Ultralight Series)
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Mitchell 310Xe
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Mitchell 310 Pro
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Mitchell 310 (Modern variants produced after 2000)
Technical Insight: The 310UL series uses a high-performance gear geometry that is significantly more compact than the classic 308 series. The 84329 gear must be perfectly aligned with the 84331 Pinion Assembly. If your reel has developed a "gritty" feel, it is often due to micro-pitting on the teeth of this main gear. Replacing it along with the pinion is the most reliable way to restore factory-fresh performance. You can download the full schematics at www.reelschematic.com.
Professional Maintenance & Lubrication
Because ultralight gears feature finer tooth profiles, they require high-quality lubrication to prevent friction-related wear and mechanical noise.
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Gear Teeth: Apply an even, light coat of Deuthlon Reel Grease to the teeth of the 84329 gear. Its specialized "Dust-Shield" properties provide a protective barrier that stays on the teeth during fast retrieves, ensuring a silent and effortless feel.
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Drive Shaft: Use a drop of Deuthlon Reel Oil on the gear’s integrated shaft where it passes through the body bushings or ball bearings. This reduces startup inertia, allowing for a more responsive retrieve when working small lures.
Why Choose Genuine Mitchell 84329?
The Mitchell 84329 is factory-balanced to eliminate the handle vibration that can occur with aftermarket or "generic" gears. In a finesse reel like the 310UL, the sensitivity of the setup is directly tied to the precision of the drive train. Using a genuine replacement ensures that the gear pitch and timing remain exactly as designed, preserving the casting performance and mechanical integrity of your ultralight gear.
