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swinging weights
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catweasel
 


Member Since: 05 May 2006
Location: Bundaleer
Posts: 4805


he"ll be taking the rubber off the rims next to save weight. all .005% of it Thud Rolling Eyes
wonder if the ride will be affected.
  
Post #2826095th Apr 2008 1:58 pm
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DiscoStu
 


Member Since: 09 Apr 2006
Location: London
Posts: 11412

England 

The roof lining has been looking a bit weighty recently. Doesn't seem to do much either - I've been watching it..... Whistle
 Disco 5 HSE Lux
https://www.youtube.com/watch?v=peyiqaJrmMU 
 
Post #2826105th Apr 2008 2:06 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50930

Wales 

Mass dampers are found in many vehicles from Ford, Mazda, Nissan, Toyota, Mercedes to name but a few I found..

The only reference to them from LR is

Quote:
Land Rover's Integrated Body-frame construction marries a hydroformed-steel ladder frame to a highly rigid monocoque body. The benefits are exemplary collision performance, efficient packaging, the stiff platform needed for superior handling and maneuverability, and a composed cabin environment. Miniature dampers between the frame and body at mounting points and a tuned mass damper located at each corner of the vehicle help block the transmission of noise, vibration, and road harshness into the passenger cabin.
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #2826115th Apr 2008 2:11 pm
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catweasel
 


Member Since: 05 May 2006
Location: Bundaleer
Posts: 4805


madman will be pleased with your efforts as am I .
I originally thought of mass damper as a group of wives. ta for clearing that up Thumbs Up
  
Post #2826145th Apr 2008 2:17 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50930

Wales 

Glad to be of service, Sire Very Happy
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #2826165th Apr 2008 2:23 pm
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heine
 


Member Since: 07 Feb 2007
Location: Midrand
Posts: 4054

South Africa 2009 Discovery 3 4.4 V8 HSE Auto Alaska WhiteDiscovery 3

I seem to remember the Renault F1 Team being in trouble a couple of seasons ago because of something to do with illegal mass dampers , so not so low tech then after all Whistle
  
Post #2826175th Apr 2008 2:23 pm
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BarryG
 


Member Since: 30 Apr 2006
Location: Eire
Posts: 1333

Ireland 2006 Discovery 3 TDV6 SE Manual Java BlackDiscovery 3

catweasel wrote:
madman will be pleased with your efforts as am I .
I originally thought of mass damper as a group of wives. ta for clearing that up Thumbs Up

Rolling with laughter Rolling with laughter
  
Post #2826185th Apr 2008 2:23 pm
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j,moore
 


Member Since: 26 Nov 2007
Location: out on the piste,
Posts: 139

United Kingdom 2006 Discovery 3 TDV6 SE Manual Atacama SandDiscovery 3

i didnt think you could take them off with out lifting the body off its mountings but i may be wrong. Laughing the only problem i see is in a few years when the rubber mounts are worn out, they look a bit of a pain to swap Rolling Eyes
regards, jim Thumbs Up
  
Post #2826195th Apr 2008 2:24 pm
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Dom Harvey
Lord of the Four Fingers 


Member Since: 15 Apr 2005
Location: Dorset
Posts: 7454

England 2012 Discovery 4 3.0 SDV6 GS Auto Orkney GreyDiscovery 4

Excuse me for being thick..................but why would you want to take them off in the first place, exactly what will it acheive Question
 2004 Discovery 3 - gone
2006 Discovery 3 - gone
2008 Discovery 3 GS - gone
2011 Freelander LE Special Edition - gone
2007 Discovery 3 XS - gone
2012 Discovery 4 GS - current 
 
Post #2826235th Apr 2008 2:27 pm
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DG
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Member Since: 12 Dec 2005
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Wales 

Come on Dom stop being a dullard Thud ...don't you know you'll save about 30kgs and that will make a considerable difference given that the motor weighs over 2700kgs Rolling Eyes



Wink
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #2826245th Apr 2008 2:33 pm
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mdm
 


Member Since: 25 Mar 2008
Location: Rossendale
Posts: 21

United Kingdom 

ok you rumbled me. Laughing

i was trying to explain to the experts at my landrover garage what they are and what they do.

many thanks for the genuine responses and to the rest who believe that harmonic dampers are a band from the 80's

Rolling with laughter Rolling with laughter Rolling with laughter
  
Post #2826385th Apr 2008 3:17 pm
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Dom Harvey
Lord of the Four Fingers 


Member Since: 15 Apr 2005
Location: Dorset
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England 2012 Discovery 4 3.0 SDV6 GS Auto Orkney GreyDiscovery 4

DG wrote:
Come on Dom stop being a dullard Thud ...don't you know you'll save about 30kgs and that will make a considerable difference given that the motor weighs over 2700kgs Rolling Eyes



Wink


Thumbs Up Rolling with laughter Rolling with laughter Rolling with laughter
 2004 Discovery 3 - gone
2006 Discovery 3 - gone
2008 Discovery 3 GS - gone
2011 Freelander LE Special Edition - gone
2007 Discovery 3 XS - gone
2012 Discovery 4 GS - current 
 
Post #2826795th Apr 2008 5:49 pm
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dick dastardly
 


Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112

Switzerland 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

1955diesel wrote:
simon wrote:


Yes but how to they work ?


The section in Wikipedia gives a reasonable explanation. http://en.wikipedia.org/wiki/Tuned_mass_damper


Thanks, great link. Nice to know that in my D3 I'm protected against earthquakes and .... wind Embarassed

Did notice a little kick from the suspension occasionally when starting at a junction and turning sharply, thought it might be transmission related, but could be these.

Just goes to show that the D3 is the dog's danglies.
 There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song  
Post #2846209th Apr 2008 8:53 pm
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TazDaz
 


Member Since: 07 May 2007
Location: South East Essex
Posts: 2858

United Kingdom 

from Wikipedia ... Almost all cars will have one mass damper, some may have 10 or more.

well well, I never knew that !!!
  
Post #2846409th Apr 2008 9:22 pm
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mobyone
 


Member Since: 23 Dec 2005
Location: Melbourne
Posts: 394

Australia 2005 Discovery 3 4.0 V6 Petrol SE Auto Bonatti GreyDiscovery 3

simon wrote:
Are the weights actually connected to an sensors ?

They appear to be just free swinging - so at odds as to how they actually work.


Bythbusters demonstrated Nikola Telsa's Earthquake machine recently to prove that a 6lb weight (attached to an almighty steel bridge) moving in simple harmonic motion at the right frequency, can actually make the bridge resonante at the same frequency. That is, the entire bridge structure starts to vibrate at the same frequency. Tesla's theory that it would eventually destroy the bridge was proven wrong, but the 6lb weight moving at the right frequency caused a motion in the bridge similar to a larch truck moving along it. The dampers on the D3 do the opposite to the 6lb weight by cancelling out (absorbing) any vibrations that come up through the suspension and chassis... as others have said.. been around since cocky was an egg and cannot be more effectively controlled with anything else.... So keep up the good work LR.

If it's weight you want to save mdm then remove the unused seats (these weight about 30kg each Shocked , or perhaps the chassis that's attached to the monocoque shell. surely one of these is redundant? Rolling with laughter
 What's the point.... it all comes out in the wash anyway!

85 Range Rover
01 Disco Series II
05 D3 V6SE, Bonatti Grey, 19"alloys 
 
Post #2846769th Apr 2008 10:00 pm
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