Imprint Contact 868 Videos
900.000 Callings


Wheel change
Save Energy

Video Axle Drive
Video Rear Axle Drive
Video FWD (classic)
Video Front Axle Drive
Video Ring and Pinion
Video Hypoid Gearbox 1
Video Hypoid Gearbox 2
Video Differential
Video Locking Differential 1
Video Locking Differential 2
Video Locking Differential 3
Video Self locking 1
Video Self locking 2
Video FWD (cross) 1
Video FWD (cross) 2
Video FWD (cross) 3
Video FWD (longitudinal) 1
Video FWD (longitudinal) 2
Video RWD (front engine) 1
Video RWD (front engine) 2
Video RWD (front engine) 3
Video RWD (rear engine)
Video Mid-mounted Engine
Video Transaxle Drive
Video Planetary Power Axle
Video Smart Drive (f. view)
Video Smart Drive (s. view)
Video Powertrain Position
Video Bus with Low Floor
Video Tractive Power
Video All-wheel Drive
Video All-wheel History 1
Video All-wheel History 2
Video All-wheel History 3
Video All-wheel History 4
Video All-wheel History 5
Video All-wheel History 6
Video All-wheel Automatic
Video All-wheel Longitudinal 1
Video All-wheel Longitudinal 2
Video All-wheel Longitudinal 3
Video All-wheel Transverse 1
Video All-wheel Transverse 2
Video All-wheel Rear Engine
Video Ferrari FF
Video Bosch Hydro Drive
Video Locking Differential
Video Viscous Clutch
Video Torsen-differential 1
Video Torsen-differential 2
Video Electr. Differential Lock
Video Distrib. gearing 1
Video Distrib. gearing 2
Video Distrib. gearing 3
Video Distrib. gearing 4
Video Propeller Shafts 1
Video Propeller Shafts 2
Video Cardan Shaft
Video Cardan Joint
Video Constant Velocity Joint
Video Universal Joint
Video Universal joint (working)
Video Ball Joint
Video Dry Joint 1
Video Dry Joint 2
Video Driving Chain

Video Force
Video Torque
Video Piston force

Video Axle drive 1
Video Axle drive 2
Video Axle drive 3

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Position of the Engine Unit


The engine position should take into consideration among other things, the following points:
- The center of gravity should be way up front (insensitive to crosswinds)
- a low front bonnet giving little air resistance
- evenly distributed weight (chassis quality)
- as much well-usable space as possible
- the engine should be easily accessible
- a high amount of comfort through a low noise level


The in-line (straight) mounted engine up front, which drives the rear wheels through a cardan shaft is known as a standard drive train, although nowadays, most vehicles have a front wheel drive and the first vehicle by Carl Benz had the engine at the rear. He initiated the mass-motorisation. A special construction type, the transaxle drive train, also exists. The engine is straight-mounted in the front with the gearbox behind it. Whereby, the clutch can be either mounted on the engine or on the gearbox. Vehicles with a standard drive train can also achieve a well balanced weight distribution (e.g., by installing the battery in the boot).

Special construction form - the mid-motor principle:
A straight- or transverse mounted engine installed mostly in front of the rear axle should permit an aerodynamically effecient front bonnet, and should weigh down the driven axle causing a neutral handling during bad weather conditions. This is also achieved. However, a break-away when cornering at high speeds, is also more difficult to control, e.g., because the whole mass is concentrated near to the vertical axis.

The main argument against both special construction forms:
Nowadays, a neutral cornering behaviour can be achieved by applying specific measures to the chassis and the weight distribution without having to turn to these complicated and space consuming technologies. 11/10

Other construction forms

- Normal drive train with the engine above/behind the front axle,
- Front-wheel drive straight flat mounted engine in front of/behind the front axle,
- Rear-wheel drive with a transverse flat mounted engine behind the rear axle,
- Flat, straight mounted mid-engine, gearbox in front of/behind the rear axle.               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

Our E-Book advertising