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Before you fit the rear wings, it is important to get rid of the so-called separation seam. The separation seam is the edge on the wing that will be in contact with the body. We advise you to sand and polish this seam before the wing is fitted on the body. .
Protect the fibreglass next to the seam by using masking tape. Sand down the seam with waterproof sanding paper. Start with granularity P500 and working down to P2000 or even P2500. When you are done, you should have obtained a smooth but dull surface.
The original lustre is obtained by applying an appropriate polishing compound.
Sand down any unevenness on the wing surface that will be touching the body. This should be done using fairly course-sanding paper, for example grain P80.
Start by defining the location where the rear wings will be attached. At exactly 110 centimetres from the corner of the bonnet towards the rear, measured at the top ridge in the body, is the starting point where the wings are going to be attached. Mark this point with a felt pen. The mark can later easily be removed with either acetone or thinner.
The flange of the rear wings that will be in contact with the body has two indentations. These indentations will rest on the ridge of the body, defining the location and height of the wings. The mark you made earlier defines the spot where the indentation starts. The picture shows this clearly. Get an assistant to keep the wing in place. Draw the contours of the wings on the body, with the use of a felt pen. This will later enable you to properly reposition the wings.
Drill a series of eight holes in the middle of the flange, each with a diameter of 6.5 millimetres (1/4 of an inch). Make sure the holes are evenly spread along the length of the flange and make sure not to drill any holes near the height of the car floor! Place the wing against the body and mark the position of all eight holes on the body with a felt pen. Now drill the holes in the body.
Fit the wing by using stainless steel M6x20 bolts, penny washers and lock nuts.
It is advisable to use vinyl body trim between the wings and the body. The black trim is the cheapest, but you can also order trim in the same colour as your body. The trim gives a better seal between wing and body and it also looks more professional. It is applied by first gluing it to the wing flange with super glue before the wing is fitted to the body.
Now install the reflectors on the wings. Replace the self-tapping screw by a M5 bolt with washer and lock nut. Self-tapping screws should not be used in fibreglass there they are guaranteed to come loose due to vibration. The reflector can easily be taken apart by unclipping the chrome ring from the rubber seal.
First, fit the rubber part to the wing and then clip the chrome ring together with the reflector back on. Be sure to position the reflector so that the “TOP” mark does indeed point to the top. With the use of a little silicon spray, you will be assured of a smooth refit. .
Should the wings be ajar after they have been attached, make sure that the fibreglass has to settle.
Start by fitting all the bolts hand tight, wait several days and then tighten them properly. Be careful not to over tighten them or any other bolts that fix fibreglass to fibreglass. Over tightning will force the overstretched fibreglass to “flow” which can cause serious deformation. |
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