do you get vibrations with your sliders? (28 Viewers)

[concretejungle]

I believe that's "more or less in line."

TJK

Fawk, your right. I used to have a roomy that could tell what show, which set, and the venue just from hearing them tune up! Now that's pretty heady. I'm obviously not quite to that level.

 

[Kaderabek]

I had that roomate too.

TJK

 

[Beowulf]

B, are your sliders store bought, or did you fab them up?

Man CJ, you have a very short memory. You and I had numerous conversations while you were building yours from George's plans. I had mine made from George's plans about 3 years ago.

-B-

 

[Arya Ebrahimi]

must be all the canibus.....

 

[concretejungle]

Allright fawkers! Now, what was my last question?!

 

[Heffenoche]

Do you think coating them with bed liner material might help dead'n the vibration?

 

[NorCalDoug]

Do you think coating them with bed liner material might help dead'n the vibration?

No.

 

[concretejungle]

Do you think coating them with bed liner material might help dead'n the vibration?

No. I painted mine with 3m undercoating and they still vibrate a little.

 

[mabrodis]

It's probably not vibrating, probably just resonating the sound. Also though make sure the slider is not touching anything. On my '97 the slider would hit on the cat, no idea why and Christo had installed these on dozens of vehicles, but mine hit, so he notched the slider, that helped, but it still was close to where when you started the engine (exhaust shakes quite a bit when you start the engine) it's still rattle at times.

A commone problem is the slider slid up too far so it just barely hits on the floor-boards, or does when you hit a bump, I had that problem too and ended up wacking 1/4" off the top of those frame-mount piece on those sliders, but that was only because I wanted them snugged up tight to the body, since I think that looks better...

 

[IdahoDoug]

I think E and Concrete are dead on with their comments. The cantilevered weights of a set of sliders are a recipe for creating a vibration, and clearly even two different models of sliders are both well within the sympathetic frequency range of what the frame's transmitting. In fact, I can tell that the 95+ LC powertrain engineers already had a resonant frequency issue in this area as my new 97 has a vibration damper on the right side of the tranny. It's about the size of a Sterno can as I recall from being under there Sunday.

Anyhow, you have a few choices:

Make the slider arms from the frame stiffer to bring the frequency of the slider structure up. Not the best due to expense and likelyhood you'll just shift the engine RPM they vibrate at up a few hundred RPM.

Change the mass of the sliders by filling them with water,oil, etc with a threaded hole. Cheap.

Place a stout spring under the floor above each slider arm. Might not be handy stuff to mount these to. Or use some other strategy under the pinch weld or other to pre stress the arms and change the frequency at which they vibrate. Many big box hardware stores sell antivibration mat - the stuff counter workers stand on - by the linear foot and that may be the ticket. I've got a few square feet of it in my garage from another project.

Personally, I'd guess the volume of the slider tubes, calculate the amount and weight of the water to fill them, and bolt on an equivelent test weight. If this stopped the vibration or brought it low enough that it's below the idle RPM then I'd drill and tap a hole and fill them with water or oil.

Decoupling the sliders from the frame with rubber or other would not work due to the force these things must sustain in use. A little movement at the frame translates into too much movement at the sliders to protect the body well, I'd guess.

DougM

 

[Josh83]

I would coat the top surfaces of the sliders with some sort of thick grease, then see where the grease transfers to something else after driving around. I use a red grease at work to check clearances on moving parts of machines almost daily.

 

[IdahoDoug]

Josh's idea is a good one, but I'm assuming these are vibrations from the structures themselves, as opposed to rattles from metal to metal interference, right? That's a wholly different issue, so please confirm.

DougM

 

[Josh83]

Ahh, I didn't fully read the post. Disregard my idea(at least for this, it works great for other stuff).

 

[concretejungle]

Doug, when i first installed the sliders i made, i put a thin coat of undercoating on them. I felt that this way, if they were touching anything, the undercoating would be rubbed off where the slider touched. I removed them about a week later and found there there were two spots that they were touching. I remidied that with a little grinding here and there, reinstalled and they for sure aren't touching anywhere. Now the vibration is much less, but i can still notice it. It's not silky smooth as the cruiser is with them off.

 

[offroadkid]

I get that vibration too on acceleration. If I ease the gas from a stoplight it doesn't happen, but with my right foot, I normally get it. I have Hanna sliders, and it didn't happern right away, maybe they've settled or moved a bit. I will take a look see. Glad it's the slliders and not something mechanical.

 

[Kaderabek]

This from Christo, which I intend to check out this weekend, weather allowing:

"Tod, check piece that goes against the frame on the 2nd leg on the PS side.
It is possible that it is touching the exhaust. It get's pretty close with a
stock exhaust. Have not hear anyone else complain about this. Only other
item is on the DS front floorboard, the bracket can get close and sometimes
touch the floorboard when the truck flexes.

Also check the pinch weld on the PS front. If the slider is to high, then it
can touch and make a noise.

Christo"

Clearly this applies specifically to Slee sliders, but might be referenced to others as well.

TJK

 

[80cruiserscool]

i had to raise my pinch welds up a little after the istallation due to mine hitting them.
my problem is a lot better, but i can still feel a little vibration due to the sliders!
i also am going to try to put some extreme sound deadener on the mounting bracket to see if it will quite down the vibration!
i plan on doing that this weekend while i am installing the 1.5" spacers! and caster plates!!
cant wait to seee the difference with the caster!!!

 

[Kaderabek]

What is extreme sound deadener?

TJK

 

[concretejungle]

What is extreme sound deadener?

TJK

Diddo?

 

[landtank]

I've read alot about George's plans. Could someone post a link to them. I can probably use some equipment at work to produce cardboard tmplates of all the pieces to verify fit issues and get an idea of build difficulty.

Thanks