Tamas Juhasz Posted January 15, 2014 Posted January 15, 2014 I have a pretty specific problem: there is a 1 stud wide channel/place, where 1 stud wide u-joint is needed to transfer relatively high torque in a moc. Because the space is 1 stud wide, I can't use strong, custom built U-joints. I thought about the old red one, I heard it's stronger than the others. So my question: is the old red U-joint ( http://www.bricklink.com/catalogItem.asp?P=9244a ) stronger than the new 3L one? If so, "how many times" is it stronger? I know it's hard to tell, but maybe someone has torque information. I don't think they are so much stronger than new 3L joints. Other thing: Is there any method to make stronger the 4 or 3L U-joints without increasing their width? (of course without custom metal parts, etc.) Custom rubber band or string is ok. Thanks in advance. Quote
Junpei Posted January 15, 2014 Posted January 15, 2014 (edited) Yep, it's a little bit stronger. I think they can handle a little more torque than the 3L ones, and the advantage is that their ends have quite a bit of clutch power and they would have to take a lot of torque to snap (about 5 or 6 of my 3L ones are split at the ends and are unusable). I don't have any specific torque info though, maybe someone like Philo could help? TLH Edited January 15, 2014 by TwentyLeggedHen Quote
Johnny P Posted January 16, 2014 Posted January 16, 2014 I think this can't be so difficult to test. just make a little device were you can lock one side of the joint and put a lever on the other side. Then ad weight to the lever and see when the joint pops/cracks. Then tesame for the other joint and you will have a good indication of wich is stronger and How much stronger. Downside is that you will also have 2 broken joints. Quote
Tamas Juhasz Posted January 16, 2014 Author Posted January 16, 2014 Ok, I also thought about that, but I have no old red u-joint. And without that it has no sense to test. Quote
Johnny P Posted January 16, 2014 Posted January 16, 2014 I would be willing to do the tests. But i also don't own any of the older red joints. Grtz Johnny Quote
Junpei Posted January 16, 2014 Posted January 16, 2014 I own one, but unfortunately it's cracked. It doesn't reduce clutch power or stop the joint from working, but I think it might affect the tests TLH Quote
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