Jeffrey Liekhus
Portfolio Headings
Industrial Design
Continuous Torque Drive v3

Client: Jones Design & Development

Prooduct: Continuous Torque Drive

Photography: Canon G4

Graphics: Photoshop

Layout: PageMaker

Media: Brochures and web

Notes: Continuous Torque Drive is a hybrid drive system for road and mountain bikes. Patent: US 6,840,136 B1.

CTD on road bike

CTD on a Ti Cycles frame and build.
CTD torque comparison

Client: Jones Design & Development

Prooduct: Continuous Torque Drive

Graphics: AutoCAD

Layout: PageMaker

Media: Print, booth art and web

Notes: A simple illustration to show the difference in output between an conventional drive system and the CTD.

CTD v4 Assembly

Client: Jones Design & Development

Prooduct: Continuous Torque Drive

Graphics: CAD

Layout: PageMaker

Media: Print and web

Notes: Version 4 of the CTD was the last produced.

CTD v1 CAD

CTD version 1 in a CAD rendering.

CTD v4 Assembly

Client: Jones Design & Development

Prooduct: Continuous Torque Drive

Graphics: AutoCAD

Layout: PageMaker

Media: Print and web

Notes: This graphic depicts the radial movements of the crank arms and the chainrings. The yellow area shows the increase in relative diameter of pedal sprockets.

CTD v1 CAD

For the gear-heads this graphic shows the location of the pedals relative to the position of the chainrings.

CTD v4 Assembly

Client: Mountain To Sound Motorcycle Adventures

Prooduct: Cycle Butler

Graphics: Photoshop

Layout: InDesign

Media: Print and web

Notes: This product was designed as a cup holder for most motorcycles.

CTD v1 CAD

A photo of the Cycle Butler on a Honda Goldwing.

Cycle Butler Install diag

Cycle Butler installation diagram.