DrJB

To truly answer such question, we need to look at the back of the buckets and see if the pin holes locations match. In real life machines, the locations of such pivot point is always the result of a kinematic optimization of piston stroke vs bucket curl ... etc. I only havr the 8455 so I cannot answer your question. However, your post begs the question: Why?, are you after a different color bucket?

Not sure what happened here ... I tried to correct my earlier post and ended up quoting myself. Quit self-centered if you ask me. :)

The length of the motor is dictated by few factors 1. Length of windings - Need a given length of wire (along axis) to generate enough electromagnetic force i.e. torque 2. Thickness of dual stage planetary gear train reductions. Teeth need to be long/wide enough to sustain torque from motor In the old Micro-Motor, #2 was reduced to a minimum by the use of a 'harmonic drive'. The small size of the micro-motor was likely the reason for its low reliability. Though, with small motors nowadays very pervasive (in small electronics). I'm sure we can build small motors that should be more durable than their larger siblings. Yes, TLG should be able to offer us new/revised/robust micro-motors.

You need to make sure two keypoints are absolutely correct. 1. That the program is correct 2. That the physical build is exactly the same. If you've used any gears or different tires/wheels, that might explain the difference.

yes, please.

Rather impressive, and it takes 'courage' to mix metal and plastic. From my course in Electric Machines a long time back (not sure things have changed since), the number of windings and 'magnetic poles' need to be different to ensure the motor starts no matter the angular position. In your case, both are 6, and it seems you need to start the motor by hand ... what am I missing ?

Very nice. Though, many of the technic parts (lift arms and panels) are available in Tan :)

In a 'standard' poll, I would expect some summary numbers/statistics as an output. The questions to be answered could be: 1. Total number of motors across all EB respondents 2. Max number of motors per EB members (min is of course zero) 3. Average number Motors / EB members (not useful but still) 4. Histogram, of how many people own how many motors ... etc. 5. How many of the total motors (reported) are being used. How many are sitting idle (either collecting dust or in a 'clean room') 6. How many are still sealed in their original boxes 7. ... The way this thread has evolved is only a collection of answers, not 'organized data' per say.

I think I got it ... how about this? I used 8M axles with end stop for ease of positioning in LDD. LXF file here I essentially built two lattices then positioned them so the all pinholes are filled (It took more work in real life as LDD is finicky during alignment of large sets). There might be more elegant versions than this though.

I can view LDraw files too (just can't make them). Whichever is faster. All I need is a single 'node'. Please ignore request. I somehow thought it was the same axle going through. I got it now. ScreenShot and LXF file below. Next, we need to replicate and connect ... sqr-lattice.lxf

I tried to but could not visualize what is happening with the picture. The axles are 'offset' one stud from one cell to the next, correct? Maybe an LXF of the basic 'element' could help. Maybe two exact lattices 'intertwined', just as we did the 'intersecting octahedra' in the sister-thread?

Certainly, here it is. tetrahedron.lxf Ah, ok, found my mistake. I replaced ALL the 2L axles with longer ones

I tried, but no success so far. I'm still not sure how you can tile this ... ... into this The only one I could do is shown below

I think I recall seeing this discussed a while back but do not recall ... Yes, these motors are 'powerful'. As such, they draw more current than current PF motors. The question is: Are they compatible with the PF power supplies? (current limiting and load/heat)

I have 5 total, 1 came with the 8421 crane, and 4 (2 each) came with RC Hot Flame. One Flame is still sealed.

Nope, black pins and pin holes on the white arms.

Bricklink says 8880 came with both parts, and in also two different color variants. My 8880 came with WHITE parts, with PIN (round) holes. Though, you can make both work by using either of these two pins. and But of course, you already knew that :)

Very nice ... You mean like this? This is a periodic structure, and might as well reside in the Chemistry thread. I do see the octahedra, not sure about the tetrahedra though... unless I need to do 3D tiling (above figure has only 1D tiling).

I think this topic is over now. Most of us think of Lego as a hobby, not to become experts on batteries. The main questions have been answered, though I'm sure some audience members will find your post/link useful. True, the AA batteries are also heavier than the AAA ... but in the end, everything we build is a set of compromises. I understand that some of us True/Seasoned (older/experienced) engineers are after achieving stretched 'optimizations' ... looks vs. function vs. dynamics vs. durability vs. long lasting batteries vs. weight distribution vs. tire rolling resistance vs. cost ... you get my point.

Very nice. If you're in the Chicago area, l'm sure you've seen the one in Navy Pier (Children's Museum). Though if I recall, that one was not to 'proper' scale. If you plan on finishing this project, don't forget the 'glass box'. :) Do you have an approximate parts list? Those technic beams must have costed a fortune.

Don't be too hard on yourself. We all make/made mistakes, especially those of us with lots of experience. This forum, to me, is about learning and sharing and I hope we achieved that, even though some feathers got ruffled.

Here it is ... Two 'intersecting' Tetrahedra. and an LXF file for those willing to experiment further. tetrahedron.lxf You're right ... this calls for a clear mind, not for a late night activity. :)

Thank you. That's exactly my point. We should abstain from making 'blanket' statements. As to me using a Russian word, I was not being 'offensive'. I was being 'playful' ... just to make sure you do not miss it. If that offended you, then ... Я извиняюсь ;) Now, back to batteries: All batteries of a given nominal voltage deliver that voltage (there are variations depending on the chemistry inside). However, a larger battery (AA) will deliver more 'juice' i.e., last longer than a smaller one (AAA). I thought this was the main point being discussed. If that's not it, then ok I misunderstood, let's move on. I was however not being careful with terminology (8878 vs 88000).

@ Didumos69 and aeh5040 ... You're both right. I was playing with 'magformer' shapes few days ago and thought I could do few tetrahedrons in a larger one. I was wrong. Now, I like the idea of extending this beyond Plato's shapes, but that would require investing in many more connectors than I have. The real difficulty here is that many of the shapes require angles that are 'not' available within the standard lego connectors and as such, any attempt of virtual modeling might not work. I have quite a few of the triangular shaped connectors, and will get to exploring more shapes during my evenings. One good starting point though would be the magformers set from Amazon ... and the sample shapes below. One word of caution though. The magnets work fine for small structures. Large structures tend to be too heavy for the magnets and collapse easily. I just realized that all above shapes require 4 edges per vertex ... Not sure this is doable in Lego. Might need to restrict to three edges/faces per vertex. Yes, very good point. The only 'connection/vertex' that is easy to do with any shape is the one below. It requires two thin wheels, 3 connectors ... and quickly gets real busy. Also, and because of gaps in the parts, the resulting construction is 'not' solid.

I'm sure you know this already but, for those who do not, you can extract a parts list for the LDD/LXF model. Granted, it is not necessarily complete, but that'll give an idea as to what parts to expect and which you need to start buying.