APC Metric Prop Adapters (APCMPA1)
$3.99
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APC Metric Prop Adapters (APCMPA1)
$3.99
In Stock
Multi-Size Set
Includes Five Popular Bore Sizes
Precision Molded
Reduces Wobble and Engine Vibration
Genuine APC Parts
Designed for APC Propeller Hubs
Precision Propeller Shaft FitmentEssential Adapters for RC Airplanes
The APC Adapter Rings: 6 Sets (1/8", 4mm, 5mm, 6mm, 5/16") provide a accurate hub-centering solution for adapting various motor shaft diameters to RC airplane propellers. Designed by APC-Landing Products, these high-quality composite rings reduce dynamic vibration and ensure balanced rotation for your brushless motor or glow engine setups.
Engineered Hub AdaptationMaintain Balance and Protect Shafts
Properly centering your propeller on the drive shaft is critical for eliminating airframe vibration and reducing stress on your electric motor bearings. The APC Adapter Rings: 6 Sets (1/8", 4mm, 5mm, 6mm, 5/16") precisely bridge the gap between common motor shaft sizes and APC propeller center hub bores. Constructed from durable composite material, each ring inserts snugly into the hub recess without adding unwanted weight. Whether you are building an electric trainer or a high-speed scale model, having these propeller shaft adapters ready in your field box ensures seamless gear integration and optimal performance.
Technical DetailsAdapter Ring Specifications and Compatibility
Compatible Vehicles
APC Propellers & RC Aircraft
Part Type
Propeller Shaft Adapter Rings
Material
Molded Precision Composite
Placement/Position
Propeller Hub Center Bore
Included Shaft Sizes
1/8 in, 4mm, 5mm, 6mm, 5/16 in
Quantity
6 Complete Sets
Weight
Approx. 0.3 oz
Key AdvantagesOptimized for Reliable Fitment
Multiple Shaft SizesAccommodates 1/8", 4mm, 5mm, 6mm, and 5/16" shafts
Bulk Value PackContains 6 complete multi-ring adapter sets
Vibration ReductionCenters prop hub precisely to eliminate high-speed wobble
Tough CompositeEngineered material withstands high rotational forces
Factory CompatibilityPerfect press-fit for APC propeller hub recesses
Easy InstallationQuick push-in installation requires no special tools
Frequently Asked QuestionsEverything you need to know
What shaft sizes are included in the APC Adapter Rings: 6 Sets (1/8", 4mm, 5mm, 6mm, 5/16")?
Each set includes precision rings sized for 1/8 inch, 4mm, 5mm, 6mm, and 5/16 inch motor shafts, accommodating a wide range of RC airplane electric motors and gas engines.
Why are adapter rings necessary when installing APC Adapter Rings: 6 Sets (1/8", 4mm, 5mm, 6mm, 5/16")?
Propeller hubs frequently feature a larger rear recess than standard motor shafts. Using these adapter rings centers the propeller perfectly on the shaft, preventing excessive vibration and motor shaft strain.
Will the APC Adapter Rings: 6 Sets (1/8", 4mm, 5mm, 6mm, 5/16") fit other propeller brands?
While these adapter rings are specifically designed to fit the rear hub recess of APC brand propellers, they may fit other propeller brands with identical hub bore dimensions.
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