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Lotus in the Peak
28th - 30th June 2024

Dents In Undertray


StormS2

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Noticed a couple of dents today whilst I had the car jacked up,one is in the middle of the car or just further back where the 2nd tray from the back slides in to the middle section,could these damage the chassis at all?are they worth getting checked out by a specialist?its probably about 3-4 inches in diameter I'll try and attach a pic but don't think it's easy to tell in a picture

690B841E-87CB-4647-82AC-D438B9CBB1C6_zps

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You will see when the 2nd rear tray is removed. The end of the tray slides into it. Get a bit of metal slightly thicker than the tray end. Push it in the gap. Bit of wood and a hammer and gently tap the bends out, would be my method HTH

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Once removed you should see something like this:-

rearjackstand.jpg

The panel with the holes in is the shear panel that is bolted underneath the fuel tank (the black bit with the sticker on that's visible through the holes).

The undertray pushes into a recess near the line of bolt heads you can see running across the car.

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Thanks for the help,has anyone ever tried using sound deadening on the inside of the undertrays?i know it's all about weight saving but thought it would be good to reduce vibrations,this isn't my first lotus I know they all rattle and vibrate but I just fancy trying to reduce it a bit!?

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I tried Dynamat on the undertray and diffuser with no effect.  The only thing that happened is that the first garage that had the car afterwards dropped them as they were unexpectedly heavy...

 

You can get some decent results from doing the floorpan under the seats, and the cockpit sides of the fuel tank enclosure (ie behind the seats and the horizontal bit above).  You don't need much, certainly not the whole panels.  The effect is from mass-loading, and it doesn't take much Dynamat to double the weight of the panel you're trying to damp.  About 1/3 coverage, mainly in the middle, is enough.

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