KHITCHDEE (an industrial-design company)
We specialise in ergonomic design.
We design land-vehicles and PCs.
KHITCHDEE (an industrial-design company)
We specialise in ergonomic design.
We design land-vehicles and PCs.
Lightweight bicycle-trailer
We have produced a lightweight bicycle-trailer design.
Attachment mechanism
The trailer attaches to the bicycle's rear-wheel spindle.
Dimensions and weight
It weighs about 14 kg, including a wheel weight of about 8 kg.
It could pull loads of up to 100 kg (220 lb) at a speed of about 10 km/hr (6 mi/hr).
It adds about 70 cm (28 in) to the length of the bicycle and 1m to the width.
Axle design
It has 2 axles, rigidly attached to the rear wheel spindle
via a single lightweight steel beam-set.
The attachment holes provide some space for axle rotation.
The wider axle is about 1m wide and rests on 16" wheels.
It's primary purpose is lateral balance.
The narrower axle is about 60 cm wide and rests on paired 14" wheels.
It is a weight-bearing axle and provide longitudinal stability
and shock-absorption.
Axle steering design
A specially designed steering cylinder is attached to the seat-tube.
It has a chain driven connection to the head tube via freewheels attached to both the head-tube and the steering cylinder.
This chain-drive transmits handle rotation at a certain gear-ratio to the rear steering cylinder.
Another freewheel attached to the steering cylinder
rotates to steer the axles.
Cargo carrying add-ons
A cargo-carrier can be attached to trailer-frame
using vertical support beams attached to the rear-wheel spindle, the wider axle and the narrower axle,
and an additional attachment point at the seat-post frame-corner.
We are producing a specification of this design.