Product details
DESCRIPTION
5 speed front wheel drive transmission. Different versions of the SD90 gearbox fit very different cars. Many competitive FWD cars now rely on the superior reliability of the SD90 gearbox.
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Info
Number of speeds 5 Gear positions R-0-1-2-3-4-5 Recommended max engine torque 13,5mm gears = 350 Nm 17 mm gears = 400 Nm Weight 45.5 Nm Gear wheel width 13,5 or 17 mm
Smooth gear change helps to drive faster
The SD gearboxes for front wheel drive cars have a very consistent, smooth and reliable shift mechanism, and consequently dog ring life is exceptionally good. The efficient gear shift will help you drive faster.
Technical information
Lubrication |
Wet sump. GL5 spec. transmission oil. |
Tractive recommends SAE 90 gear oil, available from Tractive in 1 L bottles. |
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Housing design: |
A symmetric design ensures thermal stability and a uniform deflection of the housing during high loads. A natural and favourable load path is designed into the gearbox layout. |
Clutch shaft: | A separate clutch shaft drives the input shaft via a splined coupling. Different lengths and spline configurations are possible. The standard Ford 1”-23 spline is preferred for a shorter lead time, while we certainly can make any type of spline to any type of clutch. |
Clutch release mechanism: |
Hydrulic, integrated in the gearbox. |
Clutch rings (dogrings): |
Tractive standard with 90 mm O.D. with radiused corners for long life and good durability. |
Cockpit Gear Lever: |
Tractive sequential shift gear lever with return springs. Two lengths available. |
Gear Lever and gearbox connection: |
Through 8 mm stainless steel rods, either direct or over a bell crank on the prop-shaft tunnel. |
Reverse gear engagement: |
A With clutch ring shared with 1:st gear. Note! No sliding gears, no chips or swarf in the gearbox. |
Reverse gear release machanism: |
A separate lever on the gear lever must be operated to release engagement of neutral and reverse gear. |
Gear wheel width: |
17 or 13.5 mm for all forward gears. |
Ratios: |
Wide range of speed available. See ratio charts. |
Gear selection mechanism: | Sequential shift mechanism extensivley developed by Tractive. |
Bearings: |
Standard type SKF cylindrical roller bearings for input and output shafts. Ball bearings for selector drums. |
Bearings in clutch gears: |
INA cage type needle roller bearings. |
Seals: | Nitril as standard or Vition alternatively PTFE-lipped low friction seals on request. |
Shot peening: | All gears and dogrings are dual shot peened. |
Surface treatment on casing: | All parts making up the casing are anodized in black colour using Comptcote process. |