What is a Dynamic Damper?

[GST98 PR]

I was reading this PDF



http://www.eclipse-club.ru/templates/articles/manuals/2G_manual.pdf


and found this thing called dynamic damper on one of the pics, I just want to know what it is for and see if someone could post some pics of it in a car.


thanks. . . .

 

[jtmcinder]

In general, a dynamic damper will be a device that acts to reduce the transmission of vibration from one thing to another, in this case from the engine to the chassis. Sorry, have no pics.

 

[TurboATM]

i believe its some sort of rubber block, my Nissan Versa has one or two. It helps with vibrations, somehow.

 

[GST98 PR]

2g dsm bring that from factory? its an add-on? or just people eliminate it ?

 

[Kyle_T]

i believe its some sort of rubber block, my Nissan Versa has one or two. It helps with vibrations, somehow.

Theyre solid steel. Ive seen them on cars at the junkyard and have always wondered what they did.

 

[GST98 PR]

Theyre solid steel. Ive seen them on cars at the junkyard and have always wondered what they did.

can you find some pics of it on a dsm pls . . .

 

[19Eclipse90]

I'm surprised these didn't come up when you searched "Dynamic Damper":
http://www.dsmtuners.com/forums/newbie-forum/358583-what-piece.html
http://www.dsmtuners.com/forums/newbie-forum/46893-something-broke-my-motor-mount-need-know-what.html#post415962

 

[ACM]

They're not solid steel - they're a chunk of rubber bonded to a flat plate. In the case of 2GAs at least. They went the way of the Dodo along with the vented rear rotors, the hood seals and numerous other little touches that were on the first run of 2Gs.

Charles

 

[PieEyedPiper]

Do we know how much they weigh? A commonality in these threads is that no one seems to know the effectiveness of this particular device. But we do know they break.

 

[jtmcinder]

They're not solid steel - they're a chunk of rubber bonded to a flat plate. In the case of 2GAs at least. They went the way of the Dodo along with the vented rear rotors, the hood seals and numerous other little touches that were on the first run of 2Gs.

Charles

Leave it to the guy with the same first name as Darwin to make an allusion to dodos.

ps. Hey, Chuckles!

Do we know how much they weigh? A commonality in these threads is that no one seems to know the effectiveness of this particular device. But we do know they break.

The depth of this comment, which is really a given with DSMs, knows no bounds.

 

[99gst_racer]

Is it safe to assume that they eliminated these from the later 2G models because they didn't do much of anything?

 

[GST98 PR]

Is it safe to assume that they eliminated these from the later 2G models because they didn't do much of anything?

thats why i asked in the first place, it made curios to see that cause the motor mount has a place to screw it in there....


if someone could find some pics

 

[jtmcinder]

I wouldn't make that assumption, myself. What I find more likely, as alluded to by PieEyed, is that they were causing warranty work, so they were eliminated.

 

[19Eclipse90]

thats why i asked in the first place, it made curios to see that cause the motor mount has a place to screw it in there....


if someone could find some pics

Must have missed them in your search and in post #7 above, I suppose.

I'm surprised these didn't come up when you searched "Dynamic Damper":
http://www.dsmtuners.com/forums/newbie-forum/358583-what-piece.html
http://www.dsmtuners.com/forums/newbie-forum/46893-something-broke-my-motor-mount-need-know-what.html#post415962

 

[T is for TURBO]

They're not solid steel - they're a chunk of rubber bonded to a flat plate. In the case of 2GAs at least. They went the way of the Dodo along with the vented rear rotors, the hood seals and numerous other little touches that were on the first run of 2Gs.

Charles

Hood seals? This is a new one to me...

 

[GST98 PR]

Must have missed them in your search and in post #7 above, I suppose.

ooops sorry i posted before reading

on this thread

http://www.dsmtuners.com/forums/new...my-motor-mount-need-know-what.html#post415962

post #16 by halvorja

he said something about absorbing vibrations and makes sense but I really wanna know for sure about that thing and who knows every day we learn something new.

tomorrow on my way to school is a mitsubishi dealer im stopping by to get my F/filter and other stuff, ill try to find some info of this thing and post it later. . .

*the worst thing to find out is, they dont know either

 

[bjones18]

These are called "flobber-dobbers." Delete it.

Every single part in a car (or airplane or widget) has natural frequencies. When you assemble these parts together they can vibrate or "ring" together. Engineers analyze the system by gluing accelerometers everywhere and measure where noises at certain frequencies are being generated. They attach mass-spring systems (flobber-dobbers) in certain places to reduce noise. You will mainly see these on exhaust systems of newer cars.

For example: strike a tuning fork, listen to it ring. Then tape a fishing weight to each prong and strike it again. It won't sound the same.

 

[ACM]

These are called "flobber-dobbers." Delete it.

Every single part in a car (or airplane or widget) has natural frequencies. When you assemble these parts together they can vibrate or "ring" together. Engineers analyze the system by gluing accelerometers everywhere and measure where noises at certain frequencies are being generated. They attach mass-spring systems (flobber-dobbers) in certain places to reduce noise. You will mainly see these on exhaust systems of newer cars.

For example: strike a tuning fork, listen to it ring. Then tape a fishing weight to each prong and strike it again. It won't sound the same.

Wot 'E said upstairs.

They were deleted because Mitsu no longer cared whether their 2Gs vibrated unpleasantly or that the life-span of parts was shortened - they simply no longer cared.

Note that Mitsu did not delete the attachment bosses from the Al mount, they simply stopped screwing things to them. IE they stopped caring.

That is what happened to 2Gs - they became Mitsu's red-headed stepchild.

If you need proof, try finding seam sealer, or low-drag a/c, or screw covers (or bonnet seals) on a 96+ 2G...Not there, gone - bu-bye...And let's not even start about the paint quality...