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Topic: Weissach Axle

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	Weissach axle - Wikipedia, the free encyclopedia
		The goal of the Weissach axle was to eliminate lift-throttle oversteer by allowing the rear suspension to adjust itself during cornering maneuvers.
		The Weissach axle is a variant of the semi-trailing arm suspension.
		A similar, but simpler concept to the Weissach axle is seen in the rear suspension of the second generation Mazda RX-7.
	en.wikipedia.org /wiki/Weissach_Axle (280 words)

	Weissach axle - Wikipedia, the free encyclopedia
		The Weissach axle (pronounced 'Vise-ock') is a special rear suspension arrangement devised for the Porsche 928.
		In this arrangement, when the vehicle decelerates and the wheel is "pulled" back, the result is toe in.
		UK Car - Weissach axle description and diagram.
	en.wikipedia.org /wiki/Weissach_axle (280 words)

	AutoZine Technical School - Suspension
		Basically, it is a rigid axle fixed between left and right wheels.
		Therefore live axle is never good at ride quality.
		Live / Dead Axle have another disadvantage - body roll is not sufficiently suppressed.
	www.autozine.org /technical_school/suspension/tech_suspension1.htm (1249 words)

	Free Essays on Porsche
		Weissach celebrates its 25th anniversary 1997: Presentation of the new Porsche 911 with a water-cooled six-cylinder boxer engine.
		A number of fundamental modifications have been introduced between the gearbox and the front axle in the process of changing over to the new model: The first point is that the drive shaft no longer runs through a rigid tube as with the transaxle principle.
		Consistent adjustment of axle geometry to four-wheel drive and re-tuned elasticity on the front axle ensure neutral behavior all the way to extreme limits, allowing the driver to safely approach the highest possible speeds in a bend without losing control of his car.
	www.123student.com /970.htm (4490 words)

	928 AUSTRALIA - ABOUT THE 928
		The goal of the Weissach axle was to eliminate lift-throttle oversteer by allowing the rear suspension to actually adjust itself during cornering manoeuvres.
		The Weissach axle is one of the most noted features of the marque and has been adapted across the model line-up.
		A special 928 Weissach edition was available and, similar to the 911 Weissach edition, featured champagne gold metallic paint, matching brushed gold alloy wheels, two-tone interior and the extremely collectible three-piece Porsche luggage set.
	www.landsharkoz.com /articles/about928.htm (656 words)

	Dictionary of Automotive Terms Abbreviations (Site not responding. Last check: 2007-10-12)
		There are two usual methods for arranging a Watt linkage: frame to pivot on axle housing to frame or axle to pivot on frame to axle.
		A circular device, thin in relation to its face area, usually able to rotate about a central axle or pivot, with a durable but elastic rim or with regular teeth cut on the rim and for lightness often supported by spokes joined to the hub instead of being left solid.
		The distance between the front and the rear axles on a vehicle, motorcycle, or bicycle.
	100megsfree4.com /dictionary/car-dicw.htm (7529 words)

	1998 Porsche Boxster Press Release VIS www.autopricing.com
		On and rear the front axle, the subframe, transverse control arms, longitudinal arms and suspensions wheel supports enclosing the shock absorbers are all made of cast aluminum.
		Suspension performance inspired by the Porsche 911 Carrera was specified "Weissach" for the Boxster to ensure directional stability, lateral acceleration and controllability under all conditions, with smooth and forgiving behavior at the limit.
		The "Weissach" axle, a design offering increased safety under extreme driving conditions, was developed by Porsche for the 928, a modification of axle geometry under lateral forces in bends called elastokinematics.
	www.autoworld.com /Boxster.htm (4758 words)

	1979 Porsche 928
		This device was dubbed the 'Weissach Axle' to mark the achievement of the Weissach Research and Development Center (and pronounced VEE-sock).
		Like many Porsche innovations, the Weissach Axle was an elegant solution to a thorny problem.
		The clutch at the rear of the engine attaches to the propeller shaft and the gearbox input pinion at the axle.
	www.eastcoastmusclecars.net /928tech.htm (2365 words)

	Weissach Axle: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-12)
		Weissach Axle: Facts and details from Encyclopedia Topic
		The Weissach Axle is a special drive-train devised for the Porsche 928 Porsche 928 quick summary:
		The porsche 928 is an automobile made by porsche ag of germany from 1977 to 1995, during which time it was their flagship model....
	www.absoluteastronomy.com /encyclopedia/W/We/Weissach_Axle.htm (57 words)

	MPH Magazine - Porsche 928 (Site not responding. Last check: 2007-10-12)
		The condition of the 928's rubber bushings is critical due to what's called the "Weissach" rear axle.
		With the Weissach system, however, when the driver lifts off or brakes during a hard turn, the rubber-bushed link causes the loaded rear tire to toe in, which prevents oversteer.
		The Weissach axle turns bad drivers into lucky ones, but the rubber bushings have to be in good condition to do that.
	mph-online.com /mag/rearview/0013 (1196 words)

	1978-1995 Porsche 928- Top Speed (Site not responding. Last check: 2007-10-12)
		At its unveiling the car stunned the world and was received to critical acclaim and controversy - the 928 was promptly awarded Car of the Year for it’s many innovations such as the aluminum engine block and heads; and the ’Weissach axle" (named in honor of the Porsche RandD center where it was created).
		The goal of the Weissach axle was to eliminate lift-throttle oversteer by allowing the rear suspension to actually adjust itself during cornering manuevers.
		A special 928 Weissach edition was available and, similiar to the 911 Weissach edition, featured champagne gold metallic paint, matching brushed gold alloy wheels, two-tone interior and the extremely collectible three-piece Porsche luggage set.
	www.topspeed.com /wallpapers/porsche/928-ar1013.html (694 words)

	TheAutobahn.com - A WEISSACH suspension for a Porsche 993
		TheAutobahn.com - A WEISSACH suspension for a Porsche 993
		- - A WEISSACH suspension for a Porsche 993 (http://www.theautobahn.com/forum/showthread.php?t=4075)
		Yes the Weissach suspension, or Weissach axle was first introduced in the 928 (the first car ever to have passive rear-wheel steering).
	www.flat-6.net /forum/printthread.php?t=4075 (599 words)

	Panorama
		To accommodate the four-wheel-drive system and ABS brakes, new front and rear axles were designed.
		The rear axle deletes torsion bars in favor of coilover spring and shock units with inner semi-trailing arms whichhaveatrack correcting effect when strong lateral forces are present.
		The basic function is similar to the Weissach axle of the 928.
	www.porsche964.co.uk /rev_rep/Panorama_dir/Panorama_11.htm (247 words)

	AutoZine Technical School - Suspension
		On the other hand, the transverse component is actually equals to a swing axle suspension.
		Now, you may remember that the swing axle suspension always introduce oversteer due to body roll.
		Weissach axle was designed to eliminate this oversteer (second row in the picture).
	autozine.org /technical_school/suspension/tech_suspension21.htm#Torsion (897 words)

	VINTAGE CARS
		The Shark’s innovative suspension combines coil-over springs and gas shocks with an upper-A-arm/lower-wishbone up front and the ingenious semi-trailing arm Weissach axle at the rear.
		Developed to eliminate oversteer, the Weissach axle acts as passive rear steering, dynamically changing rear-wheel toe-in under load during cornering.
		The result is a smooth ride and impressively neutral handling with none of the 911’s twitchiness.
	www.928registry.org /1979-928-John-k-Autoweek-10-01-2004.htm (631 words)

	Porsche 928
		It was built to fly down the autobahn in excess of 140 mph for hours on end without tiring the driver, but is equally at home on twisty back roads.
		Porsche pioneered many technical features on their flagship luxury coupe including the famed Weissach Axle which was later adapted for use on other models.
		It is an automatic toe-correcting system which can be thought of as a sort of passive rear-wheel steering -- the first of its kind available to the public.
	www.wolfeden.org /928S4/history.php (561 words)

	Porsche 928
		The design of the 928 included a number of innovations.
		Including the weissach axle that provides passive rear wheel steering in certain off throttle cornering situations.
		An un-sleeved, silicon alloy engine block was another.
	www.ebroadcast.com.au /lookup/encyclopedia/po/Porsche_928.html (260 words)

	Official Porsche History
		The Weissach Centre continues the tradition initiated by Professor Ferdinand Porsche, the father of Ferry Porsche, at his original Design Office in Stuttgart, developing not only the sports cars of the marque, but also technical projects and new technologies for customers the world over.
		One of the departments that also moved to Weissach was the Emission Testing Unit with dynamometers and rolling roads in a position even then to handle speeds of up to 160 km/h or almost 100 mph.
		The next significant expansion of the facilities in Weissach was due in 1981, with Porsche's own engineers as well as development customers in the world automotive industry demanding larger capacities for measuring and optimising exhaust emissions.
	www.fischetti.com /porsche_history.html (8893 words)

	Porsche 928 Driver - Technical Aspects
		This "toe-in" arrangement helps correct geometry changes when the vehicle is braking during cornering, creating an "oversteer" (or at least a marked reduction in under steer) condition.
		One or all of these assemblies must be speeded up or slowed down by the synchromesh in the transmission when gears are changed.
		The gearbox is situated ahead of the rear axle, powering the differential behind.
	mywebpage.netscape.com /tanjwarrior/Technical/Technical.html (2693 words)

	Album: Porsche
		The large gear inserts directly into the differential, which drives axles through the two openings in the aluminum casing that are visible.
		Thu Jan 22 2004, 08:13am PT This is 5th gear on a manual 5-speed transaxle, along with associated bearings and synchros.
		The Weissach rear axle provides rear wheel steering, while the rear location of the transaxle profides perfect 50/50 weight balance.
	www.imagestation.com /album/review.html?id=4289802879 (2056 words)

	PORSCHE 928 PAGE (Site not responding. Last check: 2007-10-12)
		In fact the pistons and rings only come into contact with pure silicon particles and do not touch the aluminium alloy.
		The rear suspension of the 928 is a somewhat flexible arrangement known as a WEISSACH AXLE.
		This allows small changes of the rear wheel alignment depending on driving conditions (acceleration/deceleration/cornering).
	members.tripod.com /~Croppy/photos.html (253 words)

	PH: A shot in the arm for the 928 owners
		I'm a pretty dyed-in-the-wool 928 guy, and I've lived long enough to experience the virtues of the Weissach rear axle, which is something the 911 boys probably don't know about.
		In short, it adjusts the toe-in within a half second, and it does so mechanically, and automatically, which is a brilliant design coming out of Weissach.
		One of the supposed advantages is that lateral force on the wheel carrier causes toe in, giving some passive rear-wheel steering, much as you're describing for the weissach design used in the 928.
	www.pistonheads.com /gassing/topic.asp?f=48&h=&t=203970 (809 words)

	eNorthlander April 2006
		Several of the notable design innovations for this model included the Weissach axle and the rear mounted transaxle.
		The Weissach axle was designed to reduce throttle-lift induced oversteer during cornering.
		A special Weissach edition was also available with champagne gold metallic paint, brushed gold alloy wheels and two tone interior.
	www.ncr-pca.org /northlander/2006/enl-04-2006.htm (3826 words)

	Panorama
		ABS brakes, new front and rear axles were designed.
		The rear axle deletes torsion bars in favor of coilover
		axle has altered geometry which provides the negative
	www.porsche964.co.uk /rev_rep/Panorama_dir/Panorama_s11.htm (157 words)

	Steve's 986
		On the front axle, the sub-frame, transverse control arms, longitudinal arms, and the wheel supports enclosing the shock absorbers are all made of cast aluminum.
		At the rear, the transverse control arms, longitudinal arms, wheel supports and shock absorbers are all connected to an aluminum structure that reinforces the rear body structure.
		A design offering increased safety under such driving conditions was developed by Porsche's engineers in designing the Weissach axle, first featured in the Porsche 928, a modification of axle geometry under lateral forces in bends called elastokinematics.
	www.sanelson.com /Boxster/BoxsterBasics.htm (4327 words)

	928History
		Apart from the new V8, this car also featured a new invention - Weissach axle, which was a multilink rear suspension that allowed a certain degree of passive rear-wheel steering.
		Weissach axle compensates the toe-out thus result in a much neutral steering.
		Since the early 60s, we saw countless of racing cars came out of Weissach and dominated endurance racing and GT racing.
	928s4.home.insightbb.com /928history.htm (2374 words)

	Volvo XC Forums - V8 for 2005 XC90?
		This is the 1983 "low compression US Spec version" and it was still the fastest car sold in North America, turbos included, in 1983.
		Aluminum body panels, 4-wheel passive steering via the Weissach rear axle, transaxle, rear mounted battery, torque tube, all aluminum V8 (this one is a SOHC 2-valve) and manual 5-speed.
		Do the same in a 928 and you can adjust the stereo, the Weissach rear axle 4-wheel steering is awesome, you should try is sometime and then you'd know what you're talking about.
	www.v70xc.com /forums/printthread.php?t=3600&pp=40 (2569 words)

	Lüfteknic
		At the rear, a revision of geometry to the semi-trailing arms, plus addition of rubber bushing to pivot joints, enabled a passive rear-wheel steer (inspired by 928s Weissach axle) to counter the oversteering.
		However, the biggest technology breakthrough must be the intelligent 4-wheel drive, which was simplified from the 959.
		It normally transferred 69% torque to the rear axle, but in case of slide, the electronic control could send more to the wheels which had most traction.
	www.lufteknic.com /info/964info.html (1059 words)

	- The Company - South Africa (Site not responding. Last check: 2007-10-12)
		The Porsche 917(4.5-litre 12-cylinder boxer engine) shown to the public for the first time in Geneva wins virtually all races the world over, including the World Championship of Makes and the Endurance World Championship.
		Under the guidance of Ferry Porsche as Chairman of the Supervisory Board, Porsche goes public.
		Porsche introduces the 924, the first Transaxle sports car with the engine at the front, the transmission and drive wheels at the rear.
	www.porsche.co.za /company/history/milestones/6070.htm (226 words)

	928 AUSTRALIA - Articles - TELL ME MORE PT 2
		Red recommended that with higher horse power 928s using a big front sway bar (such as the Devek), no rear sway should be needed on the track.
		[Additionally, for the best autocross and track lap times, he recommended that the rear axle should be pinned...but you lose the benefit of the Weissach axle which allows you to be a less precise driver without getting in trouble.
		Pinning involves drilling two holes and inserting a bolt into the axle on each side of the car.
	www.landsharkoz.com /articles/jatmm02.htm (641 words)

	Inside Line: Mazda RX-7 and RX-8 - (Site not responding. Last check: 2007-10-12)
		A front-engine car with recirculating ball steering, an unsophisticated MacPherson strut front suspension and a solid axle in the rear didn't sound particularly sporty to late-'70s enthusiasts still in thrall to midengine exotics like the Lamborghini Countach or enamored with the complex "Weissach axle" independent rear suspension under Porsche's 928.
		There wasn't anything really trick about those struts in the front suspension, but that solid rear axle was located by four trailing links on either side while a complex three-piece "Watt's" linkage kept it in place laterally.
		Nothing can make a solid axle seem like advanced rocketry, but this well-located, well-supported and well-sprung one worked spectacularly well within the context of its time.
	www.edmunds.com /insideline/do/Features/articleId=103416 (4536 words)

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