Cycle Rickshaw Product

Overview

The cycle rickshaw is a pedal-driven tricycle taxi: a driver on a bicycle-style front half pulls a two-passenger bench mounted over a rear axle. It is one of the most numerous passenger vehicles ever built — Dhaka alone operates an estimated half million or more, and the type is everywhere from Delhi and Kolkata to Hanoi (as the front-loading cyclo) and, as the "pedicab," in tourist districts worldwide. It emerged in the 1930s–40s as the pedaled successor to the hand-pulled rickshaw, and in its home markets it remains a serious mode of transport: zero-emission, employing millions of drivers, and built and repaired entirely with workshop hand tools.

Construction

The Chassis is two structures joined: a heavy roadster Front Frame — head tube, top tube, driver's seat tube, essentially a strengthened bicycle — welded and brazed to a Rear Sub-Frame of angle iron and tube that spans the rear axle. Passenger comfort comes not from tires but from small Leaf Springs between the sub-frame and the bench, and Gusset Set gussets carry the bench loads into the frame. Everything is mild steel, chosen deliberately: it bends rather than snaps, and any street welder can repair it.

The Front End steers the machine. A long-raked Fork holds a 28-inch Front Wheel, and the wide swept-back Handlebar gives the driver the leverage to steer roughly 300 kg gross at walking pace. The driver sits on a sprung Driver Saddle for shifts that commonly run ten hours.

Drivetrain and the missing differential

The Drivetrain is a single speed, geared far lower than any bicycle: a 32–44T chainwheel on a cottered Crankset drives an 18–22T Axle Sprocket on the rear axle through a 1/8-inch Drive Chain, giving development of roughly 3.5–4 m per crank revolution. A Freewheel lets the driver coast. The cottered cranks and cup-and-cone Bottom Bracket look antique beside modern bicycle hardware, but they are the point: both are adjustable and rebuildable with two spanners and loose balls bought by the gram.

The Rear Axle and Wheels solves cornering the cheap way. A solid ~25 mm Axle Shaft runs in pillow bearings on the Axle Mounts, but only one Rear Wheel is keyed to it with a Wheel Key; the other rotates freely on the shaft. In a corner the two rear wheels must turn at different speeds, and with no differential the free-running off-side wheel simply does. The costs are one-wheel traction and a pull to one side under hard pedaling — accepted trade-offs at 10 km/h. Some builds instead use two freewheels, driving whichever wheel is slower.

Passenger accommodation

The Passenger Bench seats two adults on a Bench Frame about 90 cm wide, with a Bench Cushion, a Backrest that in Bangladesh is often a hand-painted artwork, and Armrests that keep passengers aboard over potholes. Overhead, the Folding Canopy works like a pram hood: three bent-steel Canopy Bows pivot on Canopy Hinges at the bench sides, fanning open to stretch the Canopy Cover against sun, with Canopy Stays struts locking it against wind and a Rain Flap closing the front in monsoon rain.

Braking is the design's weakest point. The Brake System pair a roadster Front Brake with a Band Brake — a friction band contracting on a drum keyed to the rear axle — and drivers routinely add back pressure on the pedals through the drivetrain. Stopping distances are long, and the low gearing that limits top speed to 12–15 km/h is, in practice, part of the braking system.

Variants and significance

Layouts vary by region: passengers behind the driver (India, Bangladesh), in front (the Vietnamese cyclo and Indonesian becak, where the driver pushes the cabin), or beside (some Philippine trisikads). Cargo versions replace the Passenger Bench with a flat tray. Since the 2010s electric conversion kits — a hub or mid-mounted motor with a lead-acid or lithium pack — have transformed fleets across South Asia, easing the brutal physical labor while keeping the chassis. The painted Decoration of Dhaka's fleet was inscribed by UNESCO in 2023 as intangible cultural heritage, a reminder that this is a folk vehicle as much as a machine.