The TST® Carrier 20" Cargo eBike combines heavy-duty utility with electric efficiency, featuring a 1300W motor, 450 lbs max load capacity, and a 48V battery system. Its reinforced frame, hydraulic brakes, and 20" x 4" fat tires ensure stability under heavy loads, while the Shimano 7-speed transmission and 5-level PAS offer versatile control. Designed for cargo-first performance, it balances power, durability, and safety.
How Does the 1300W Motor Enhance Cargo Hauling?
The 1300W brushless motor delivers unmatched torque (85 Nm) for climbing hills and accelerating with heavy loads. Its 48V compatibility ensures sustained power, critical for cargo transport.
A 1300W motor isn’t just about speed — it’s about raw torque. With 85 Nm of rotational force, this motor can haul 450 lbs up a 15% incline without overheating, thanks to its optimized copper windings and heat-dissipation design. The motor’s RPM (up to 600) is managed by a 25A controller, balancing acceleration and battery efficiency. Pro tip: Use PAS Level 3-5 for steep climbs to avoid draining the battery too quickly. Imagine towing a trailer with a pickup truck: the motor’s torque is like a turbocharged engine, ensuring you never stall mid-hill.
| Motor Power | Torque | Best For |
|---|---|---|
| 750W | 50 Nm | Light cargo |
| 1000W | 65 Nm | Moderate loads |
| 1300W | 85 Nm | Heavy-duty hauling |
What Supports the 450 lbs Max Load Capacity?
The reinforced steel frame and extended wheelbase distribute weight evenly, preventing flex or sway even at full capacity.
Engineered for industrial-grade durability, the frame uses 3mm thick steel tubing at stress points like the rear rack and bottom bracket. The 55" wheelbase adds stability, lowering the bike’s center of gravity — think of it as a cargo ship vs. a speedboat. Dual torque arms on the rear hub motor prevent axle slippage under load. Pro tip: Secure cargo centrally over the rear rack to minimize sway. But how does the bike handle sudden stops? Hydraulic brakes and fat tires work in tandem, but weight distribution is key. Overloading beyond 450 lbs risks frame stress or brake failure, so always weigh cargo beforehand.
How Does the 48V Battery System Optimize Performance?
The 48V 15Ah lithium-ion battery balances energy density and discharge rates, sustaining high torque demands without voltage sag.
Voltage directly impacts power delivery: 48V systems maintain higher efficiency under heavy loads compared to 36V. With a 720Wh capacity, this battery supports 60-mile ranges on PAS 1-2, though hauling max load may reduce this by 30%. The 2A charger prioritizes battery longevity over speed, using a slow charge to preserve cell health. For context, a 48V system is like a diesel engine — built for endurance, not just sprinting. Pro tip: Charge to 80% for daily use to extend battery lifespan.
| Battery Voltage | Charge Time | Optimal Use |
|---|---|---|
| 36V | 5-6 hours | Light commuting |
| 48V | 7-8 hours | Heavy cargo |
| 52V | 8-9 hours | High-speed models |
Why Are 20" x 4" Fat Tires Ideal for Cargo E-Bikes?
Fat tires provide a larger contact patch, enhancing traction and shock absorption, vital for uneven terrain with heavy loads.
The 20" diameter and 4" width offer a balance between maneuverability and stability. The knobby tread pattern grips loose surfaces, while the low PSI (15-20) cushions bumps — picture a bulldozer’s treads conquering rubble. Tubeless-ready rims reduce puncture risks, crucial when transporting fragile items. Pro tip: Check tire pressure weekly; underinflation increases rolling resistance, draining the battery faster. But what about speed? Smaller wheels accelerate quicker, complementing the motor’s torque for rapid starts, even with 450 lbs onboard.
How Do Hydraulic Disc Brakes Ensure Safety with Heavy Loads?
180mm hydraulic discs offer progressive stopping power, essential for controlling momentum when fully loaded.
Hydraulic systems self-adjust brake pad wear, maintaining consistent performance without manual tweaking. Compared to mechanical brakes, they require 40% less hand force — a lifesaver during emergency stops. The 180mm rotors dissipate heat efficiently, preventing fade on long descents. Imagine stopping a minivan: hydraulic brakes act like ABS, modulating pressure to avoid skids. Pro tip: Bleed brakes annually to remove air bubbles and maintain responsiveness.
What Role Does the Shimano 7-Speed Transmission Play?
The Shimano 7-speed drivetrain lets riders optimize pedaling efficiency across terrains, reducing motor strain and extending range.
With a 14-28T cassette, gear ratios adapt to both uphill climbs and flat sprints. Lower gears (1-3) ease pedal effort on inclines, letting the motor focus on cargo weight. Higher gears (5-7) maximize speed on descents. Think of it as a manual transmission in a truck — you shift based on the load and terrain. Pro tip: Shift gears before stopping to ensure smooth starts. Combine PAS Level 5 with Gear 7 for effortless cruising on paved roads.
TST EBike Expert Views
The TST Carrier’s 1300W motor and 48V battery are engineered specifically for cargo demands. Unlike recreational e-bikes, every component — from the extended steel frame to the hydraulic brakes — is stress-tested for heavy loads. We prioritize torque over top speed, ensuring reliability whether you’re delivering goods or hauling gear. The 2A charger may be slower, but it doubles battery cycle life, saving long-term costs.
FAQs
Laws vary, but in the U.S., its 28MPH top speed classifies it as a Class 3 e-bike, legal where allowed. Always check local wattage and speed limits.
Why does the TST Carrier use a 2A charger?Slower charging preserves battery health, extending its lifespan to 800+ cycles despite the 7-8 hour wait.
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