Version: 16.12.2014 - Porsche 2015 911 GT3 Cup Technical Manual

Powertrain
1 Fixed gear, 1st gear
2 Fixed gear, 2nd gear
3 Fixed gear, 3rd gear
4 Fixed gear, 4th gear
5 Fixed gear, 5th gear
6 Fixed gear, 6th gear
1 Idler, 1st gear
2 Idler, 2nd gear
3 Idler, 3rd gear
4 Idler, 4th gear
5 Idler, 5th gear
6 Idler, 6th gear
911 GT3 Cup (991)
48
Drive shaft design
The drive shaft is located above the pinion shaft and is mounted with two bearings in
the gearbox housing. As typically found in motor sports, the fixed gears of the gear
pairs are all located on this shaft.
2.3.3.3
Pinion shaft design
The pinion shaft is located below the drive shaft and is mounted with three bearings
in the gearbox housing. A special feature is the combination of cylindrical rollers and
angular contact ball bearings directly in front of the bevel gear. This bearing
arrangement directs the occuring forces into the housing in the best possible way.
The pinion shaft accommodates all idlers of the gear pairs as well as the sliding
sleeves, which are responsible for positive engagement.
1
2.3.3.4
MY 2015
3
1 2
2
3
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6
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Version: 16.12.2014