SBB-CFF-FFS Ae 8/14
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The SBB-CFF-FFS Ae 8/14 is a class of
The steep 2.7% grades of the
The idea was to introduce
First two prototypes with the numbers 11801 and 11851 were built to evaluate the best suited drive system. A few years later a third prototype 11852 was built, which was quite similar to 11851 but with increased traction power.
Design
All Ae 8/14s were double-locomotives with eight driving axles and six idlers. The running gear was built for 100 km/h so that the locomotives could be used for passenger trains. At the beginning all locomotives had special devices fitted which could mechanically transfer weight from the idlers to the driving axles by slightly lifting the idlers with pneumatic cylinders. This equipment was removed in the 1950s. All engines originally had no driver's seats, that meant that the engineer had to operate the engine stand in an upright position.
11801
This 1931 built locomotive had one Buchli drive per driving axle very similar to the SBB Ae 4/7. The drive was installed on the right side of each car body when looking in the direction of the driver's cab. The locomotive had a traction power of 5,514 kW and was used in revenue service till 1975. It is now a preserved, fully functional historic engine in the SBB-fleet. The traction power was reduced to 5,408 kW to avoid damages to the equipment.
11851
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/07/SBB_Ae_8_14_11851.jpg/220px-SBB_Ae_8_14_11851.jpg)
The 11851 was built in 1932. The car body was similar to 11801 but the driving wheels were smaller and the axles were driven by double-motors with a Winterthur universal drive. The power was increased to 6,070 kW. The locomotive was equipped with driver's seats during a refurbishment in 1961. The resulting cabs were now quite similar to those of SBB Ae 6/6. The locomotive was withdrawn from revenue service in 1976 and later scrapped in Biasca.
11852
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/SBB_Ae_8_14_11852.jpg/220px-SBB_Ae_8_14_11852.jpg)
The 11852 was an improved version of 11851. The running gear and the drives were the same as in 11851 but the car body was built in new light weight technology and with a new futuristic
In 1971, the locomotive was damaged in an electric fire while driving through the Gotthard tunnel. The damages were so severe that a repair would not have been economic. The outside of the locomotive was cosmetically refurbished and the locomotive was shown for years in front of the
External links
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- SBB Ae 8/14 Nr. 11'801, 11'851 und 11'852 from Bruno Lämmli