Product Description
Mitchell 81309 Cam Ring Assembly – The Heart of the Planamatic System
The Mitchell 81309 Cam Ring Assembly is the defining mechanical component of the legendary Mitchell 308 and 309 ultralight spinning reels. This part is responsible for the "Planamatic" oscillation system—a unique engineering feat that combines cross-wind and spool-wind patterns.
Unlike standard reels that move the spool at a constant speed, the 81309 Cam Ring uses an elliptical, non-concentric path to vary the speed of the spool's travel. This results in a specialized line lay that prevents line digging and tangles, making it arguably the best system ever designed for light monofilament and trout fishing.
Product Specifications
-
Part Number: 81309
-
Component Type: Cam Ring / Planamatic Oscillation Track
-
System: Planamatic (Non-linear oscillation)
-
Material: Precision-machined high-carbon steel or hardened alloy
-
Origin: Genuine Mitchell Engineering (France)
Compatible Models
The 81309 Cam Ring is specifically designed for the small-chassis (ultralight) planetary series:
-
Mitchell 308 (Right-hand retrieve / standard)
-
Mitchell 308A
-
Mitchell 309 (Left-hand retrieve variant)
-
Mitchell 408 (High-speed version; verify series generation)
Technical Insight: The Planamatic system relies on the precise interaction between the 81309 Cam Ring and the 81308 Oscillation Slide. If the ring becomes notched, pitted, or dry, the reel will develop a "bump" or a "knock" at the top or bottom of the stroke. To ensure your cam is properly timed with your drive gear, refer to the high-resolution PDF schematics at www.reelschematic.com.
Professional Maintenance & Lubrication
The cam ring is a high-pressure contact point where the oscillation slide pin travels under load. Proper lubrication is the only way to maintain the silent, "Swiss-watch" feel of a 308.
-
Cam Track: Apply a generous layer of Deuthlon Reel Grease to the internal track of the 81309 ring. Its "Dust-Shield" properties are essential here, as they create a persistent cushion that prevents the slide pin from wearing a groove into the cam over time.
-
Rotation Interface: Use a drop of Deuthlon Reel Oil on the outer edge of the ring where it seats into the housing. This reduces the parasitic drag on the main drive gear, making the reel feel lighter and more responsive during the retrieve.
Why Choose Genuine Mitchell 81309?
The geometry of the Mitchell 81309 is what creates the perfect Planamatic line lay. Aftermarket or worn rings can cause "coning" (where line builds up at one end of the spool). A genuine factory replacement ensures the cam's elliptical path is perfectly synchronized with the pinion's rotation, preserving the legendary casting distance and mechanical smoothless of your vintage Mitchell 308.
