Can someone please answer this question!

[JackD201]

How the heck can one side of a record be extremely warped but not the flipside?

This has been bugging me for YEARS!!!!

 

[RBFC]

Perhaps because the vinyl itself has bulged/bubbled in areas on one side, while the overall flatness of the disc is still intact.

Lee

 

[Gregadd]

Well it can't. If you use a clamp then that may eliminate the warp on one side and exaggerate it on the other.

 

[es347]

That's why it's called a B (bumpy) side?

 

[JackD201]

I know Reg, it shouldn't. That's what's so perplexing about it. One side has the arm moving up and down like a bronco, flip it and it's more like a boat on a lake.

B(umpy) Side - Hahahahaha!

 

[Gregadd]

Consider if you had a flexible rubber bowl the size of a record. You clamped the bowl upright it would have no effect. Flip the bowl over and it would flatten out. Noe take the same bowl and use VPI outer rimg. It would be flat in both instances.

 

[FrantzM]

Hi

How thick is the LP? Depending on how thick it is , I can see one side being more affected than another ... If some bubbles were trapped within the LP material. Also I could see clamping consistently one, the most played side would exaggerate, the bumps (warps) on one side and not the other ...

 

[DonH50]

I have seen the vinyl layers separate and cause that. Rarely, but...

 

[Kal Rubinson]

How the heck can one side of a record be extremely warped but not the flipside?

This has been bugging me for YEARS!!!!

Are you assessing this visually or functionally? If the latter, remember that the waveform of the warp can determine trackability and the two sides will, effectively, have opposite warp-related waveforms. Thus, for example, tracking a saw-tooth wave when the leading edge is the rising slope is possible but tracking it when the leading edge is the vertical portion is nigh on impossible.

Kal

 

[JackD201]

Hmmm. Both actually but more of functionally I guess because one side has no problem tracking but the other looks like it can snap a cantilever so visually is as far as that side gets. Very interesting Kal, VERY interesting.

 

[jadis]

while i have no explanation for the above phenomenon, i just discovered something that i have not seen before. a few years ago, i got a severely warped (one side, yes) mofi late night guitar by earl klugh. it was the toughest to de-warp using my effective style of letting it stay in a very tight record shelf for many months. after 6 months to a year or so, the warp had dminished a bit, but after many more months later after this, i discovered that side2, which was flat before, has become badly warped too! and side 1 remains warped. so, both sides, warped.