 | | tougher lego gears
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| Hi, I'm building a lego mechanism in which the gears experiences a high amount of force. I've split several 16-tooth gears, and I'm interested in replacing the standard lego gears with something tougher. Has anyone done this before, or does anyone (...) (19 years ago, 20-Jun-05, to lugnet.parts.custom, lugnet.parts.mod)
| | | | | Re: tougher lego gears
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| (...) Take a look at this: (URL) - David (19 years ago, 20-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) I "doped" the gear and it still broke. I think it might have lasted a bit longer though. I put it in boiling water for 5 minutes then in iced water for 5 minutes. Didn't use it until about 15 minutes later. Any other suggestions? Jack (19 years ago, 21-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) Bummer. My suggestion would be to "gang" more gears side-by-side. You could use metal gears, like meccano or something, but you'd always have a weak point at the plastic/metal interface. Or you could do all the mechanicals in metal, and just (...) (19 years ago, 21-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) Dope another one. This time cool it with tap water, not iced water. You may have cooled it too fast, if I understand that thread correctly. Keith (19 years ago, 21-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) This time I heated it for 10 minutes and let it cool in tap water for a fair while. The gear lasted noticeably longer - almost to the end (it's operating a elastic wind-back mechanism). But then it snapped. The gears always crack at the (...) (19 years ago, 22-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) If the material is failing, I doubt filling the holes will help (perhaps, *maybe*, with a very strong glue, but I still doubt it). The problem is getting anything to bond the plastic nearly as strongly as the plastic bonds to itself. I don't (...) (19 years ago, 22-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) I don't think the plastic-glue bond would have to be stronger than plastic with itself. I'm just talking about filling up the hole so that the gear won't crack as easily at the thin points next to the holes. This is where the breaks are always (...) (19 years ago, 22-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
| | | | | Re: tougher lego gears
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| (...) It won't offer any support since the filling is not bonded to (or "integrated into") the gear body - they would just fly out when the gear cracks. (...) Which brings a question: Why use Lego in a rig with wood or aluminum? Is it a Lego MOC (...) (19 years ago, 23-Jun-05, to lugnet.parts.custom, lugnet.parts.mod, lugnet.technic)
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