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Old 01-13-2020, 08:17 PM   #24 (permalink)
oldtamiyaphile
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UFI - '12 Fiat 500 Twinair
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Thousands of push trailers in use the world over:

Quote:
Pusher

The pusher bus needs a damping system in the joint to reduce the risk of jack-knifing and fishtailing. This was developed by the FFG Fahrzeugwerkstätten Falkenried in Germany. The production cost of the pusher bus was lower than that of a puller bus. The puller bus was a completely different construction compared to a solo bus which was often fabricated by external body construction firms due to the lower production numbers compared to solo buses. The pusher concept enabled the bus manufacturer to simply join a forward and a rear part of a solo bus and build the articulated bus completely in-house. This reduced the production cost.

In pusher buses, only the rear axle is powered by a rear-mounted internal combustion engine, and the longitudinal stability of the vehicle is maintained by active hydraulics mounted under the turntable. This modern system makes it possible to build buses without steps and having low floors along their entire length, which simplifies access for passengers with limited mobility.

Modern low-floor pusher articulated buses also tend to suffer from suspension problems because their wheels lack sufficient travel to enable them to absorb typical road surface unevenness. This also leads to passenger discomfort and relatively rapid disintegration of the vehicle's superstructure.[citation needed]

Makers of pusher-type articulated buses include Mercedes-Benz, New Flyer Industries, MAN, Volvo and Scania. The Renault PR 180 and PR 180.2 (articulated versions of the PR 100 and PR 100.2) were a special variation of the pusher design in which both the middle and the rear axles were driven, with a driveshaft passing through the turntable between the two driving axles.
https://en.wikipedia.org/wiki/Articulated_bus#Pusher
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