Precision Plastic Engineering: 38T Belt Pulley for RC Cars Made by Injection Molding
In high-performance RC racing, every component counts—especially drivetrain parts like the 38T belt pulley. At DMS, we specialize in producing precision-engineered plastic pulleys using advanced injection molding techniques. Designed for 1/10 and 1/12 scale RC cars, our 38-tooth pulley delivers durable, lightweight, and accurate performance, run after run.
What Is a 38T Belt Pulley?
A 38T (38-tooth) pulley is a key drivetrain component used in belt-driven RC cars. It transmits torque from the motor to the wheels via a timing belt. Proper tooth alignment and dimensional accuracy are critical to prevent belt skipping and drivetrain wear—especially under racing stress.
Why Use Injection Molding for RC Pulleys?
Injection molding is the most efficient method to produce high-volume plastic precision parts. Here's why we use it for our RC pulleys:
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Consistent Tooth Geometry: Perfect alignment and shape of each tooth for precise belt engagement.
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High-Strength Materials: We use fiber-reinforced nylon or POM (acetal) for extra durability, heat resistance, and low friction.
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Tight Tolerances: Molded with precision to maintain center hole concentricity and consistent outer diameter.
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Cost-Effective for Large Runs: Ideal for racers, retailers, and OEMs looking for quality without high costs.
Design Highlights of Our 38T Plastic Pulley
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Optimized Tooth Profile: Engineered for standard RC timing belts to prevent slippage and reduce drag.
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Lightweight Build: Low rotational mass means better throttle response and improved acceleration.
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Precision Bore: Center hole molded to exact specs for perfect shaft alignment.
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Reinforced Hub: Built to withstand high RPM and sudden torque loads without cracking or warping.
Quality Control & Post-Processing
Every pulley is thoroughly inspected after molding:
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Visual Inspection for molding defects or flash
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Dimensional Measurement using digital calipers and pin gauges
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Fit Testing with standard RC car shafts and belts
Some versions may also undergo tumbling or polishing to smooth sharp edges or improve belt compatibility.
Applications
Our 38T plastic belt pulleys are ideal for:
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RC drift cars and track racers
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OEM and aftermarket replacement parts
Whether you’re a hobbyist, pro racer, or distributor, you can count on us for high-precision, race-ready drivetrain components.
Order from DMS
We offer fast lead times, bulk order support, and full export documentation. Contact us today to get a quote or discuss your custom pulley design.
2022 / 9 / 02