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(...) I thought that the whole idea of the introduction of the black pins was to provide this friction. You use a grey pin when you need elements to rotate about them and a black one when rigidity is required. I'm now wondering if I should sort my (...) (24 years ago, 15-Mar-01, to lugnet.technic)
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| | Re: Pre-1995 strong pieces/attachments
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(...) I agree, I think that is the difference between black & grey. I don't think there's significant difference in friction between "slotted" and "un-slotted" black pins, but they do (both kinds) allow some rotation, just not as much as the grey (...) (24 years ago, 15-Mar-01, to lugnet.technic)
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| | Re: Pre-1995 strong pieces/attachments
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Ah, yes ROSCO, I've been a bit of a fool here... (...) Clearly they would have to or you would have to pull them out and replace when you need to move a beam's position! And if they were tight enough to resist any rotation you would never even be (...) (24 years ago, 15-Mar-01, to lugnet.technic)
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| | Re: Pre-1995 strong pieces/attachments
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(...) They still allow rotation, albeit with some friction. I think the point of the black pegs is that they don't have any slack for movements other than rotation, unlike the grey ones. Jürgen (24 years ago, 15-Mar-01, to lugnet.technic)
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| | Re: Pre-1995 strong pieces/attachments
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(...) Yes! In the old days before the black ones appeared, making and bracing large structures with the grey pins was "interesting" as said structures would be prone to an incredible amount of rattle and cumulative flexibility. The black pins really (...) (24 years ago, 15-Mar-01, to lugnet.technic)
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