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The internet is a very good place to find out information. Many manufacturers and suppliers have their catalogues on line and this enables you to see what is available. Websites are a reasonable source but often the pictures do not show enough detail but if you e-mail the owners they will probably be willing to answer your questions. I have answered many questions and established contact with people around the world and they have provided me with valuable information.

Mocking up rear coil over mounting
Spreader plate for the coil over mountings

This photo is looking rearwards and shows how the rear coil overs are mounted at an angle towards the centre of the chassis. I am designing the coilover mounts on the chassis.
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Where the mounts go I have put a spreader plate. This is plug welded to the chassis rails and will be welded along the edges as well
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Rear coilover mount
Mocking up the front rocker and coilover mount

The piece of wood is a jig that ensures the pushrod, pivot mount and coilover mount are all in line. This ensures that there are no side ways loads on the rocker.
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The mounting for the front rocker and coil over are much simpler. Note how the steering and coilover fit in nicely. The rocker is mocked up in MDF.
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Front rocker and damper mocked up.
Aluminium for the rockers

The front rocker is a simple design and the pushrod is nearly vertical. The inner side of the rocker is longer than the outboard side to get a 1:1 motion ratio.
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The rockers are made from 7075 Aluminium alloy 1/2" sheet. I purchased four squares and cut them out with a hacksaw. I used an angle grinder to dress the edges.
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Boring the front rockers.
The rockers before assembly.

The rockers had a hole bored in the centre to take a steel insert to house the roller bearings. The fronts were bored on the face plate, but I had to mount the rears on the vertical slide, on the cross slide and use a boring bar.

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A front and rear rocker before assembly. The steel tubes take the bearings and oil seals. The rectangular pieces are the middle part of the " I " section that will result when they are assembled. I used a high strength epoxy adhesive to bond them all together.
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Finished front rocker in position.


The front of the car with both rockers in position.

The front rocker in position. The three holes in the rocker near the pushrod are for the anti roll bar drop link. These holes are away from the main edge line of the rocker so as no to act as stress raisers.
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This photo shows how the front rockers and coil overs will be arranged. I am in the process of making an upper cross member. This will also act as mounting for air ducts from the radiator.
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