Can you spin a Laserdisc fast enough to shatter?

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Calavera
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Can you spin a Laserdisc fast enough to shatter?

Post by Calavera » Sun Jul 29, 2018 12:31 pm

You've probably seen videos before of spinning a CD insanely fast until it shatters

Example




The first time I saw it done was on Mythbusters way back in 2003. From the first time I saw that I instantly wanted to see it done with a Laserdisc. So far nobody has ever attempted it. I'd really like to see it happen. A laserdisc is much thicker and stronger than a CD. Do you think it is even possible to spin a Laserdisc fast enough to shatter it? If you were able to spin it fast enough to shatter what kind of force do you think the shards would have? In the above video it took around 23,000 RPM to shatter a CD. How many RPMs would it take to shatter a Laserdisc? When they did it on Mythbusters I believe they were also testing if the shards would have enough force to injure or possibly kill somebody. I don't think the Laserdisc would shatter at any speed but rather break apart in big pieces, if that is the case the pieces would definitely be lethal.

I really want to see someone try this, I am very curious if it is even possible. I want to say that you wouldn't be able to spin it fast enough to shatter, but even a Laserdisc has to have a limit. What are your thoughts on it?
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melancholy
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by melancholy » Sun Jul 29, 2018 1:07 pm

I would almost think it would take less RPM to shatter it because a laserdisc is much heavier than a CD and therefore would pull at the center harder.

ian
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by ian » Mon Jul 30, 2018 3:10 am

Who do we know on the forums who might have access to laserdiscs? Hmmm

I have seen 1 player and 10 movies in person in my life, at a pawnshop for $250 which I laughed at and moved on.

I’d be inclined to agree with the less RPM to destroy theory as well.
Not only are they heavier, but significantly larger as well.
A tiny variance in weight of one side of a disc not being balanced would be amplified by the huge size of a LD.

I demand a test!!
The English language had deteriorated into a hybrid of hillbilly, valleygirl, inner-city slang and various grunts. Joe was able to understand them, but when he spoke in an ordinary voice he sounded pompous and faggy to them.

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Calavera
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by Calavera » Mon Jul 30, 2018 12:45 pm

ian wrote:Who do we know on the forums who might have access to laserdiscs? Hmmm

I have seen 1 player and 10 movies in person in my life, at a pawnshop for $250 which I laughed at and moved on.

I’d be inclined to agree with the less RPM to destroy theory as well.
Not only are they heavier, but significantly larger as well.
A tiny variance in weight of one side of a disc not being balanced would be amplified by the huge size of a LD.

I demand a test!!
I'd be happy to do a test, I still have a few random laserdiscs laying around. But I only have the laserdiscs, I don't have any equipment to spin them up.
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ian
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by ian » Mon Jul 30, 2018 11:37 pm

I think you need to get a motor and test it! ;)
The English language had deteriorated into a hybrid of hillbilly, valleygirl, inner-city slang and various grunts. Joe was able to understand them, but when he spoke in an ordinary voice he sounded pompous and faggy to them.

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Big Boss Man
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by Big Boss Man » Wed Aug 01, 2018 6:28 am

You gotta test it in a controlled environment!!!...you don't want a rogue laserdisc coming off a motor and spinning at you at high speed or exploding into a multitude of fragments. Would be like a real life Mortal Kombat fatality.

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Calavera
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by Calavera » Wed Aug 01, 2018 11:21 am

Big Boss Man wrote:You gotta test it in a controlled environment!!!...you don't want a rogue laserdisc coming off a motor and spinning at you at high speed or exploding into a multitude of fragments. Would be like a real life Mortal Kombat fatality.
Oh I know! I'd need a blast cage like they use on Mythbusters to test this out.
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Big Boss Man
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Re: Can you spin a Laserdisc fast enough to shatter?

Post by Big Boss Man » Wed Aug 01, 2018 9:34 pm

Yea definitely need to protect yourself. Maybe ask a you tuber or whomever who does things like that and suggest they do a laser disc next.

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