Tony Posted July 25, 2018 Report Share Posted July 25, 2018 I've seen weights on some exhausts which i believe is there to minimize vibration but i've not seen this before.... Each weight looks about 5kg and are rubber mounted.....Any ideas? Quote Link to comment Share on other sites More sharing options...
Rich Posted July 25, 2018 Report Share Posted July 25, 2018 Are they part of the exhaust? They don't look like they are. Quote Link to comment Share on other sites More sharing options...
Tony Posted July 25, 2018 Author Report Share Posted July 25, 2018 No they are separate of the exhaust. Their attached via a rubber mount to the underbody. All i can say is they are not a ridged and i think the marking on them means 5kg. Quote Link to comment Share on other sites More sharing options...
P4UL T Posted July 26, 2018 Report Share Posted July 26, 2018 Oh wow, interesting. I would have thought that lump of crap was heavy enough already. As it a CC (convertible) maybe its something to do with roof mechanism adding some weight to balance the roof when opening or closing? Or just giving gravity a hand when going up/down? Quote Link to comment Share on other sites More sharing options...
Rich Posted July 26, 2018 Report Share Posted July 26, 2018 I was actually thinking the same when I saw the CC badge, it must be something to do with that. lol at lump of crap! Not a fan of French cars like me! Quote Link to comment Share on other sites More sharing options...
CP09 Posted July 26, 2018 Report Share Posted July 26, 2018 By adding a mass to an object, you can change its resonance frequency - there was an Open university video on vibrations in one of the ferries (caused by the propeller blades passing the hull). By adding a mass to the vibrating plate, you change the frequency of vibration, and can reduce the resonance... it looks like cutting the roof line may have made the rear of the vehicle flex a bit more, leading to a resonance/boom effect. (anyone remember the old Hillman Minx convertibles? needed to be "straighted" at the garage after a year or two).. Colin Quote Link to comment Share on other sites More sharing options...
Tony Posted July 26, 2018 Author Report Share Posted July 26, 2018 Knowing the chassis frequcy is part the dynamic index i can see the need for the weights and i think it's to avoid scuttle shake nevertheless 5kg each side is one hell of a compensation. Quote Link to comment Share on other sites More sharing options...
P4UL T Posted July 26, 2018 Report Share Posted July 26, 2018 4 hours ago, Rich said: lol at lump of crap! Not a fan of French cars like me! Never liked them I'm afraid. Quote Link to comment Share on other sites More sharing options...
Tony Posted July 26, 2018 Author Report Share Posted July 26, 2018 Ditto...I would rather walk. Quote Link to comment Share on other sites More sharing options...
liner33 Posted July 30, 2018 Report Share Posted July 30, 2018 Maybe its a balance thing trying to move weight to the rear ? The Skoda Fabia had weights behind the rear bumper , some people used to remove them but no-one on the forums really knew for sure what they were for Quote Link to comment Share on other sites More sharing options...
Tony Posted July 30, 2018 Author Report Share Posted July 30, 2018 Maybe but they are a little to light to make a difference. I get the exhaust has a frequency so the correct weight would change were the vibration hits the saturation point but i can't see what a floating 10kg on the chassis would change. Quote Link to comment Share on other sites More sharing options...
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