Team Bomber Australia 1:12 Ball differential for asphalt
Melbourne based Team Bomber Australia has announced details of its upcoming 1:12 ball diff for racing on asphalt. Compatible with cars from Team Bomber, Bezerk Katana, Roche, CRC, Destiny, Schumacher, Yokomo and Xray, prototype versions of the parts were recently used to great effect at last weekends TFTR Masters event, taking the title in 1:12 Modified and 2nd & 3rd places in 1:12 Stock. Team Bomber Australia have designed and manufactured two parts. Titanium Ball differential rings are cut from gr5 certified titanium and machine lapped for precision parallel flatness and mirror polished. They are also processed in two coating options. TiN – gold finish, coating with superior wear resistance / hardness and ultra smooth surface. The second option is TiCN – gun metal finish, coating with ultimate wear resistance and hardness, also yields a very low coefficient of friction for smooth operation of the differential They are available in 3 outer diameter sizes to suit spur gear range 74t – 92t.
The larger outer diameter of the rings compared to OEM items means the entire surface area of the spur gear inner face is covered to greatly reduce the ingress of dust/debris, increasing time between rebuilds and ensuring consistent performance over an 8minute run, especially on dusty tracks. Despite the increased diameter, manufactured from titanium means rotating mass is considerably less than OEM rings, a great performance upgrade for stock racing.
The other diff component they have produced is a Titanium Ball differential thrust-bearing carrier. CNC machined from gr5 certified Titanium, ultrasonic cleaned it is anodised in an array of colours and effects. Available in two length options, this item allows the use of a thrust bearing at the end of the ball differential assembly for smooth operation. The ‘short’ version locates our 4x9x4mm thrust bearing at the end of the shaft and can be used with OEM Belleville washers. The ‘long’ version completely encases the thrust-bearing, effectively sealing it away from dust/debris.
Source: TeamBomber Australia [Facebook]
