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Welcome to Tuoppi's Toyota-webpages |
These pages are dedicated for those Toyota owners and enthusiaists who are interested in performance and modifications over the world. |
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Site map Toyota-talk forum(BBS) Here you can discuss anything what comes to Toyotas performance modifications.. Stuff wanted/for sale There is my own buy/sell advertisements Back to Toyota-information This section contains universal, technical information of Toyotas. NEW! My previous cars My old cars, Toyotas.. Finland, the place where car owner is a criminal.. Me, Tuoppi Links, Very good Toyota performance links World rallies There is links to every single race of rally world championship. You can "watch" those rallies on-line. Suomeksi (in Finnish) Samat sivut Suomeksi. Löytyy myös Suomenkielinen keskustelufoorumi. |
The racing four-link NEW! The "real" four-link suspension which has four longitunal equal-lenghted rods. In case you are going to make this racing-four link, you have to cut the floorpan, and construct two boxes for upper links. See the picture below. The bracket-boxes should be wide enough (there should be little metal bushings in between the uniballs and the boxes) to provide sufficient sideways movement for the axle and especially for the links caused by suspension travel and the control of the panhard bar..
Key to a good handling is the uniball-joint (aka. heim-joint, rod end etc.). Uniball-joints should be lubricated and kept clean otherwise they broke. The Panhard bar must be adjustable because you want it to be as in the horizontal position as possible. You just cut off the panhard bars from the other (or both) head(s) and weld the nut(s) in. Then you turn the uniball in the nut and you have an adjustable panhard rod. Upper bracket of the panhard should have also many adjusting holes. The coil over-shock will be mounted vertically. This kind of four-link pulls the tyres to the road in acceleration, as well as it allows you to have many different suspension variations.
This kind of four-link was used especially in the rally cars with the live axle such as Toyota Celica RA63 or Ford Escort BDA. It would be ultimate solution for track-driven race-car with the live axle when added with the watts linkage (instead of a panhard-bar). Watts linkage (see pictures above) is usually used in the track, but not so popular in the rally cars. The function of the watt's link is to reduce lateral movement of the rear axle to the minimum. Also it helps to get the roll center at the middle of car. There is VERY good animation, and some other information relating the watt's linkage. If you are possibly constructing your own watts-link, you should maybe investigate the rear axles of Mazda RX-7, some Alfa-Romeos and Aston Martins, Lincon Town Car or a Ford Crown Victoria. All of these are equipped with watt's linkage in the factory. The real watt's linkage for racing purposes, has the uniballs as you can see. Pure business..
Pictures: AE86's aftermarket watts linkages. |
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Copyright by Tuomas Könönen, 2000. For any suggestions, questions, mistakes in spelling or whatsoever, feel free to contact me by e-mail: tuomas.kononen@kolumbus.fi |
