Does anyone have facilities for testing vibrations?

[anonymous-user]

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

[TheEnd]

Yea, it'll be correct.
It's mass damping and it'll work on flat panels.

Dynamat extreme is the same stuff, and it you pull the trim away from the boot in your car, you'll see similar tar like matting stuck on the inside of panels.

[scubadude]

There is often a sheet of similar stuff on the bottom of your sink to reduce noise!!

[anonymous-user]

Ok I'll go a little bit further into detail. He has put them on his wheels, brake pads doors, boot lid, spoiler, suspension etc.

He suggests that a tiny sticker (not a mat of rubber or anything), just a tiny sticker gets him the best handling and better braking through reduced vibrations.

I appreciate that of you stick rubber on something then of course the vibration will be reduced. But I want someone who can show me that it either works or it doesn't.

They are literally tiny stickers of rubber with aluminium foil on top.

[TheEnd]

Yea, that's ballcocks.

They work on large flat panels as they make them heavier, and they will also soak up vibrations by flexing, but there isn't much need on anything smaller than about 10 inches square.

When they are used, they are about half the size of the free panel or bigger.

A small postage stamp sized sticker on a wingmirror won't do anything.

There is some science in it, but not in this case.

Try selling him some magic beans

[anonymous-user]

TheEnd said:

Yea, that's ballcocks.

They work on large flat panels as they make them heavier, and they will also soak up vibrations by flexing, but there isn't much need on anything smaller than about 10 inches square.

When they are used, they are about half the size of the free panel or bigger.

A small postage stamp sized sticker on a wingmirror won't do anything.

There is some science in it, but not in this case.

Try selling him some magic beans

Quite!

[anonymous-user]

So noone has a way of giving a fellow PHer an official looking written document to say its bks?

[scubadude]

bulldong said:

Ok I'll go a little bit further into detail. He has put them on his wheels, brake pads doors, boot lid, spoiler, suspension etc.

He suggests that a tiny sticker (not a mat of rubber or anything), just a tiny sticker gets him the best handling and better braking through reduced vibrations.

I appreciate that of you stick rubber on something then of course the vibration will be reduced. But I want someone who can show me that it either works or it doesn't.

They are literally tiny stickers of rubber with aluminium foil on top.

Get him to give you a link to the supplier- I'd love to read the sales pitch on these! (I could do with a laugh)

Does he also have magnets on his fuel hose and a PC fan before the intake manifold? There are a whole bunch of BS performance mods out there for the foolish to buy :-)

[Dogwatch]

bulldong said:

He suggests that a tiny sticker (not a mat of rubber or anything), just a tiny sticker gets him the best handling and better braking through reduced vibrations.

It's the Placebo effect. Remove the tiny, tiny stickers without telling him and he'll be as happy as Larry, swearing on a stack of Bibles how effective they are....

...Until he discovers they are missing.

[anonymous-user]

Of course its a placebo, its just he thinks its great.

nobody can persuade him otherwise.

I want something concrete to say its a con.

[dr_gn]

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

[Simpo Two]

bulldong said:

He suggests that a tiny sticker (not a mat of rubber or anything), just a tiny sticker gets him the best handling and better braking through reduced vibrations.

He'll be the type who won't have a nodding dog on the back shelf because the nodding bit spoils the handling.

[911newbie]

bulldong said:

So noone has a way of giving a fellow PHer an official looking written document to say its bks?

Sorry, it's not a simple explanation.... You can point him towards a standard Engineering textbook on vibrations and damping - try Fundamentals of Vibrations by Leonard Meirovitch, or Handbook of Viscoelastic Vibration Damping by D. I. G. Jones. But he'll likely need an undergrad degree in Engineering or physics to understand it.

What he is describing sounds to me like constrained layer damping, wherein a layer of a soft rubery lossy material is constrained between layers of stiffer material. If the whole lot is being flexed (bent) by a particular mode of vibration, the lossy material is under significant shear strain, and those a lot of strain energy is lost as heat (that's what happens in lossy materials) - taking energy out of the vibrations and reducing their amplitude.

If your mate has stuck a tiny patch on a large object like a car, he can expect very little damping loss. It would take quite a considerable amount of extra material to get any measureable dmaping on a large structure like a car.

[anonymous-user]

dr_gn said:

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

Im sure its this guy. Do you have a link to the test to say it was crap?

[dr_gn]

bulldong said:

dr_gn said:

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

Im sure its this guy. Do you have a link to the test to say it was crap?

Sorry, it wasn't a test, it was just a guy on some forum. He described the process in some detail, IIRC it involved some kind of metallic strips or pads linked with wires, placed in strategic places around the entire car. The guy was totally taken in by it and siad it transformed it from a dog into a...whatever the opposite of a dog is. It was obviously an impossible transformation. I do clearly remember him saying he drove the car into a 6" kerb and he hardly noticed, such was the power of whatever bullst process he'd been ripped off with.

[ccr32]

dr_gn said:

bulldong said:

dr_gn said:

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

Im sure its this guy. Do you have a link to the test to say it was crap?

Sorry, it wasn't a test, it was just a guy on some forum. He described the process in some detail, IIRC it involved some kind of metallic strips or pads linked with wires, placed in strategic places around the entire car. The guy was totally taken in by it and siad it transformed it from a dog into a...whatever the opposite of a dog is. It was obviously an impossible transformation. I do clearly remember him saying he drove the car into a 6" kerb and he hardly noticed, such was the power of whatever bullst process he'd been ripped off with.

Well anyone who would knowingly drive an E-Type at a 6" kerb needs their head looking at anyway!

[dr_gn]

ccr32 said:

dr_gn said:

bulldong said:

dr_gn said:

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

Im sure its this guy. Do you have a link to the test to say it was crap?

Sorry, it wasn't a test, it was just a guy on some forum. He described the process in some detail, IIRC it involved some kind of metallic strips or pads linked with wires, placed in strategic places around the entire car. The guy was totally taken in by it and siad it transformed it from a dog into a...whatever the opposite of a dog is. It was obviously an impossible transformation. I do clearly remember him saying he drove the car into a 6" kerb and he hardly noticed, such was the power of whatever bullst process he'd been ripped off with.

Well anyone who would knowingly drive an E-Type at a 6" kerb needs their head looking at anyway!

I'll try and find the thread. It was amazing.

[anonymous-user]

dr_gn said:

ccr32 said:

dr_gn said:

bulldong said:

dr_gn said:

bulldong said:

If this is in the wrong place, then feel free to move it...

A guy I know has these stickers, which he absolutely SWEARS reduce vibrations on surfaces when you stick them to it. He has stuck them on his car and on his boat and just thinks they now feel more solid etc blah blah blah.

Does anyone have a facility which they would be able to do me a favour and test them to see whether they do actually work? I can send the stickers to you, and then you would test them.

I just can't believe it because all I can equate it to is bacofoil stuck to the back of some rubber with double sided sticky tape.

I want to be able to go to him with a print out that says: "look, no vibration reduction, end of story".

If it proves correct, I will be the first to hold up my hands and say "ok" maybe you're right. But honestly I don't believe it for a second.

Any thoughts or anyone have facilities to do this type of test?

Are they supplied by a German guy (or was it Dutch?) Somewhere over there anyway. I've heard of them before and it was bks - stuck them to an E-Type suspension and reckoned they'd turned it into a limo in terms of comfort.

Im sure its this guy. Do you have a link to the test to say it was crap?

Sorry, it wasn't a test, it was just a guy on some forum. He described the process in some detail, IIRC it involved some kind of metallic strips or pads linked with wires, placed in strategic places around the entire car. The guy was totally taken in by it and siad it transformed it from a dog into a...whatever the opposite of a dog is. It was obviously an impossible transformation. I do clearly remember him saying he drove the car into a 6" kerb and he hardly noticed, such was the power of whatever bullst process he'd been ripped off with.

Well anyone who would knowingly drive an E-Type at a 6" kerb needs their head looking at anyway!

I'll try and find the thread. It was amazing.

Haha, please do... would make an interesting read!

[paintman]

Sounds like a snakeoil salesman's dream customer
Wonder if he'd like to buy a few magnets for his fuel lines?