06 May 2014
06 May 2014
BPG Werks have harnessed the durability and wear capabilities of a high-performance polymer from Victrex to construct a robust and efficient over moulded steel drive shaft segment gear.
According to BPG Werks, the high performance thermoplastic delivers a more durable, more reliable transmission solution, with remarkably smooth torque and acceleration response, and offers lower vibration levels that add to the driving experience.
Working in conjunction with China Array Plastics of Pittsfield, BPG Werks specified Victrex WG polymer in the Continuously Variable Transmission (CVT) of their Shredder dual tracked vehicle. It says, this wear grade, developed by Victrex contributes to the durability and performance of the transmission.
BPG explains the Shredder is a powerful all-terrain vehicle for extreme sports, agricultural or forestry work. Its patented CVT provides quick, reliable acceleration and outstanding torque response. Users can often go from a complete stop to top speed even on steep, uneven terrain or through water, dust and rocky environments. To transfer power from the 13-horsepower, four-stroke engine to the heavy duty rubber tank tracks, the polymer over-moulded steel drive segment gear needs to provide solid performance with low vibration and a long lifetime at high RPMs.
Russell Johnson, President of China Array Plastics, says “We looked at a couple of other materials, including Molybdenum Disulfide coated bronze. It did not demonstrate the same durability as the wear resistant material from Victrex. With exceptional friction and heat resistance, the Victrex WG polymer over-mould, although being in constant contact with the belt drive, helps to provide stable acceleration and torque characteristics. This is due to the polymer’s durability, impact and tensile strength, and low friction coefficient.”
Lighter in weight and resistant to corrosion, compared to steel, Victrex says its WG provides a cushioning effect for low vibration operation. The eight slider mechanisms produced from the Victrex WG over-moulded sliders and insert keys, are described as a critical element of the transmission system. Sliding back and forth thousands of times within the transmission, while under load, the thermoplastic offers high wear resistance while maintaining dimensional integrity, resulting in solid synchronisation and an exceptional driving and riding experience.
Photo provided by Victrex