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[EUROSTARS] Spanish company is seeking an electric bicycle manufacturer and a polymer manufacturer to design a plastic material which enables the production of a lighter shaft drive transmission for the bicycle.

Country of Origin: Spain
Reference Number: RDES20190528001
Publication Date: 31 May 2019

Summary

A Spanish small engineering company with a wide experience in mechanical product design is preparing a Eurostars proposal. The objective is developing an innovative bike transmission based on gears made of Polyphthalamide.

An electric bicycle manufacturer and a polymer manufacturer are sought to collaboratively design a plastic material which enables the production of a lighter shaft drive transmission for the bicycle.

Description

•     The project: 

One of the systems that more affects the bike reliability is the transmission and currently, most of them are with the chain that presents important troubles due to its frequent derailments. How many bikers going at work have dirtied their hands fixing the derailed chain? The shaft drive transmissions now present in the market consist entirely of metal gears and aren’t used more due to their cost and weight.

The company is a product design and mechanical engineering firm, with experience in transmission and bike design, has detected the opportunity to improve the existing shaft drive transmissions substituting the metal of the gears with Polyphthalamide (PPA), an advanced plastic material. Gears made of PPA weigh less than metallic ones and permit a 50% cost reduction.

The objective of the project is to produce a chainless bike transmission made of advanced materials which use a driven shaft instead of a chain to transmit power from the pedals to the wheel. It is based on a shaft and gears made of advanced polymer material, a reliable, light and cheap solution that integrates a torque sensor for electric-assisted bikes.

The SME has already made and tested a prototype, but it is necessary to test different combinations of polymers and plastic materials to improve the injection processes. Besides, it is necessary to define the specifications and design to integrate the transmission to the bicycle.

• The programme:

EUROSTARS2 https://www.eurostars-eureka.eu/

• The partnership:

1. Electrical bike manufacturers: This partner will be responsible for designing all the specifications required to create an electric bicycle with a chainless transmission.
a. Tasks: Define the functionality requirements of the bike transmission and design the bike shaft together with the selection of other components.

2. Polymer manufacturer will be in charge of producing the best polymers composition for the injection process.
a. Tasks: Based on the functionality requirements, the partner will define the plastic materials of the transmission elements.


• Timescales:

The official deadline for the call: 12th September 2019
Deadline for the EoI: 1st July 2019
Anticipated duration of the project: 140 weeks

Stage Of Development

Proposal under development

Requested partner

2 types of partners sought: 

1. Electrical bike manufacturers: This partner will be responsible for designing all the specifications required to create an electric bicycle with a chainless transmission.

Tasks: Define the functionality requirements of the bike transmission and design the bike shaft together with the selection of other components.

2. A Polymer manufacturer will be in charge of producing the best polymers composition for the injection process.

Tasks: Based on the functionality requirements, the partner will define the plastic materials of the transmission elements.

Dissemination Countries

Germany, France, Italy, United Kingdom

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