MED INLINE STRAIGHT CUT GEAR KIT

Straight-cut vs helical-cut gears
The design of helical-cut gears, as found in standard gearboxes, leads to increased side (or axial) loadings on the transmission. As power outputs increase, this places greater strain on the transmission casing and bearings, in-turn leading to reduced reliability.

Using straight-cut gears allows us to design a stronger transmission within the standard casing. It also reduces power losses to make the most of the engine's power. We estimate between 5-7bhp can be gained at the wheels by using a straight-cut gearset.

Road suitability
There is a myth that driving with a straight-cut gearbox on the road is hard work. In fact a straight-cut synchromesh gearbox is no different in operation to a regular gearbox, but it will be louder.

Most cars use a straight-cut first/reverse gear; it is the swap to a dog-engagement racing gearset that will affect the drivability of a road car. 

Close ratios
Closer ratios give a reduced engine RPM drop when changing up a gear. This keeps the engine within its optimum power band more effectively, resulting in better acceleration through the gears. Fourth gear is still the same 1:1 ratio, but first gear tends to be taller than with a standard gearset, to bring the ratios closer together.

The final drive ratio and wheel size need to be carefully considered to give the best results - contact us if you're unsure.