Set up of trailing arms
Discussion
Can someone out there please clarify. Didn,t take sufficient notes when taking apart.
When the rubber bush is mounted is there a washer between the rubber and (not good with technical terms) the 'shaped washer' which seems to locate in the frame.The 'bible' drawing seems to illustrate not, howevere the picture on the next page does ?
Question 2. When the 'shaped washer' is located the inner cut out locates on the pin therfore locing it to the mount. how therefore does the arm move?
When the rubber bush is mounted is there a washer between the rubber and (not good with technical terms) the 'shaped washer' which seems to locate in the frame.The 'bible' drawing seems to illustrate not, howevere the picture on the next page does ?
Question 2. When the 'shaped washer' is located the inner cut out locates on the pin therfore locing it to the mount. how therefore does the arm move?
Ah, good old trailing arms...;-)
If I recall correctly, there is a big washer(or stack of washers) between the arm and the mounting bush; this sets the toe-in of the rear wheels.
I initially wondered as well about the movement of the t/arm on the 'pivot', however the idea is not for the arm to rotate the pivot in the bush, but for the pivot to distort (i.e. twist) the rubber bush during suspension movement. There have been a few discussions about this over the years on here and the TVRCC mailing list, since the idea of intentionally distorting a lump of rubber and adding the effects of that into the suspension equation seems to go against engineering common sense. However, that's how it works. Ignoring the fact that the pivot bush is pants for the job it does, you have to remember to tighten the pivot up with the weight of the car on its wheels, otherwise, if the suspension is at 'full droop' as it would be with the wheels in the air, then once you drop it down you apply a huge twisting force to the bush even before you start the engine.
W.
If I recall correctly, there is a big washer(or stack of washers) between the arm and the mounting bush; this sets the toe-in of the rear wheels.
I initially wondered as well about the movement of the t/arm on the 'pivot', however the idea is not for the arm to rotate the pivot in the bush, but for the pivot to distort (i.e. twist) the rubber bush during suspension movement. There have been a few discussions about this over the years on here and the TVRCC mailing list, since the idea of intentionally distorting a lump of rubber and adding the effects of that into the suspension equation seems to go against engineering common sense. However, that's how it works. Ignoring the fact that the pivot bush is pants for the job it does, you have to remember to tighten the pivot up with the weight of the car on its wheels, otherwise, if the suspension is at 'full droop' as it would be with the wheels in the air, then once you drop it down you apply a huge twisting force to the bush even before you start the engine.
W.
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