Icarium Posted November 1, 2014 Posted November 1, 2014 (edited) I tried assembling an 8043 (that I got from ebay) last night and I find the instructions on page 36 of the first manual somewhat puzzling. You can find it at brickinstructions. It seems the tiny 8 teeth gear just goes on the end of the three long axle and there is nothing to secure it further. Now I have some light gray 8 tooth gears where this works reasonably well but the darker gray one just falls off. What am I doing wrong? Edited November 1, 2014 by Icarium Quote
Zerobricks Posted November 1, 2014 Posted November 1, 2014 Greetings! You are quite right, the gear can slip out rather easily. Looking at the LDD model there doesnt seem to be a way to use an axle with stop either... Maybe try a different 8 tooth gear/axle, you may have a bad match? Quote
Icarium Posted November 1, 2014 Author Posted November 1, 2014 Hi Zblj! Well, I already tried a few different ones. I assume with your experience the suggestion means there actually are pairs that are tight enough, right? I had just given up searching after a few failed attempts. Quote
Zerobricks Posted November 1, 2014 Posted November 1, 2014 Hi Zblj! Well, I already tried a few different ones. I assume with your experience the suggestion means there actually are pairs that are tight enough, right? I had just given up searching after a few failed attempts. My experinces are that the older gears had much higher friction ratio than the new ones. In worst case scenario wedge a piece of paper between axle and the gear... Quote
Nalyd997 Posted November 1, 2014 Posted November 1, 2014 Hi Zblj! Well, I already tried a few different ones. I assume with your experience the suggestion means there actually are pairs that are tight enough, right? I had just given up searching after a few failed attempts. I had the same problem so I just used one of the newer ones from 42009. It worked pretty well and doesn't fall off Quote
Sylvian Posted November 1, 2014 Posted November 1, 2014 you could also use a 3L axle with a stop,. Quote
Icarium Posted November 1, 2014 Author Posted November 1, 2014 you could also use a 3L axle with a stop,. Hm..don't think I have one of these. Is bricklink the proper way to try and source one? I had the same problem so I just used one of the newer ones from 42009. It worked pretty well and doesn't fall off A new gear or a new axle? Quote
Leif Posted November 1, 2014 Posted November 1, 2014 I actually have 1 or 2 gray 8 tooth that slip off axles just like the unique red 8 tooth from the 42009. I'm mighty proud of them because they are rare...but in the wrong context, they are way wrong for their purpouse.. Quote
Nalyd997 Posted November 2, 2014 Posted November 2, 2014 A new gear. By the way I don't think you can use a 3 long axle with a stop as it hits the base (under the turntable) Quote
Icarium Posted November 2, 2014 Author Posted November 2, 2014 A new gear. By the way I don't think you can use a 3 long axle with a stop as it hits the base (under the turntable) Okay, thanks! Meanwhile I also found this post which suggests other modifications to improve the moc. Maybe I will try those out as well. Quote
dropship Posted November 2, 2014 Posted November 2, 2014 I think I had a very similar problem - the gears would slip out if I tried to turn the model (1 track going forward, while other backward). To be honest I never found a solution for that, after 3rd reassembly where I improved the model according to a description here somewhere (for the gearbox mechanism a grey pin can be used instead of a blue one) it sort of improved, but those black gears still slip off from time to time :/ Quote
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