 | | Re: Quality issue - update —Ross Crawford
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| | | (...) OK so I just went to my box of childhood LEGO (circa 1970-80) to check this out. Discounting the CA bricks which have known deterioration problems, I put together 4 stacks of 10 ABS bricks, 2 red and 2 white. I made sure I picked out the "best (...) (20 years ago, 4-Jul-04, to lugnet.lego, lugnet.color, lugnet.general, FTX)
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| | | | | Re: Quality issue - update —Scott Arthur
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| | | | | (...) If exact brick size variation tends towards(1) a normal distribution there will be equal numbers of oversized and undersized bricks. Measuring the length of a “stack” of bricks will basically cancel out any error. Scott A (1) I say “tends (...) (20 years ago, 5-Jul-04, to lugnet.lego, lugnet.color, lugnet.general, FTX)
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| | | | | | | Re: Quality issue - update —Mark Bellis
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| | | | | | | (...) Have you accounted for common mode error? Many bricks are produced by the same mold. If 12 2x4s are produced per machine cycle, then 1 in 12 will be from the same part of the mold. The randomness of the distribution depends how many machines (...) (20 years ago, 5-Jul-04, to lugnet.lego, lugnet.color, lugnet.general, FTX)
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| | | | | | | Re: Quality issue - update —Ross Crawford
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| | | | | | (...) Agreed, with a large enough sample size. I hardly think 10 bricks (or even 40) would be enough to cancel out all such errors. Besides, if my stacks reduced the error, doesn't that mean the older bricks are actually likely to have worse (...) (20 years ago, 6-Jul-04, to lugnet.lego, lugnet.color, lugnet.general, FTX)
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| | | | | | | | Re: Quality issue - update —Scott Arthur
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| | | | | | (...) You are correct; I should have worded that a little better. ;) Scott A (who thinks this would make a good high school sats project) (...) (20 years ago, 6-Jul-04, to lugnet.lego, lugnet.color, lugnet.general, FTX)
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| | | | | Re: Quality issue - update —Rob Antonishen
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| | | | (...) I was making up some 1/2 scale blocks (2x2 tile on 2x2 brick on 2x2 plate) the other night and randomly pulled out some of my old "childhood-era" (mid 70's) 2x2 bricks, and noticed the absolutely horrible quality control it shows... (URL) (...) (20 years ago, 9-Sep-04, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto, FTX)
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| | | | | | Re: Quality issue - update —Reinhard "Ben" Beneke
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| | | | (...) snip (...) snip (...) Hi all! I know this thread is really old, but eventually I came across this discussion while uploading a few more new quality issue pictures ast brickshelf: (URL) new pictures of 2007 building session> So I just wanted to (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto, FTX)
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| | | | | | Re: Quality issue - update —Rob Antonishen
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| | | | | (...) Not suer how you come up wit that conclusion. These bricks are from my old sets, purchased in Canada between 1973-1978. I am suspecting these specific bricks came from set 256-1 released in 1976. I would doubt that these were 10 year old (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto)
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| | | | | | | Re: Quality issue - update —Reinhard "Ben" Beneke
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| | | | | | (...) Hi Rob, thanks for your feedback! In that case I would think these are US-made bricks, since the LEGO-logo on top of the bricks is of the old design. This has been used within Europe (= Billund made bricks) only in combination with CA-bricks (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto)
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| | | | | | | | Re: Quality issue - update —Rob Antonishen
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| | | | | | (...) That's an experiment that I will have to try when my collection is closer at hand :) -Rob A> (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto)
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| | | | | | | | Re: Quality issue - update —Reinhard "Ben" Beneke
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| | | | | | (...) I would be interested in the result, Rob. Just for your information: CA has a much higher material damping coefficient in comparison to ABS. So CA will make less noise and sound very dump when it hits the ground. Especially for the classical (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto)
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| | | | | | Re: Quality issue - update —Rob Antonishen
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| | | | | (...) Not sure how you come up with that conclusion. These bricks are from my old sets, purchased in Canada between 1973-1978. I am suspecting these specific bricks came from set 256-1 released in 1976. I would doubt that ir contained 10 year old (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto)
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| | | | | | Re: Quality issue - update —David Eaton
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| | | | (...) I wouldn't assume that 1965 was necessarily as good as, say, 1990. But you're right insofar as quality from the 60's and 70's is not necessarily the same quality as the 80's and 90's. If someone's really looking for proof or disproof of (...) (18 years ago, 3-Jan-07, to lugnet.lego, lugnet.general, lugnet.org.ca.rtltoronto, FTX)
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