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4/4/2015, EDIT: This thread has turned into some weird hybrid of a WIP and a 'let's see where I went wrong' thing. I've requested a name change to better reflect that. ~~~ I'm just gonna kill this project now before I regret my decisions: This is what happened when I tried to combine the styling of a 7-wide model from legoman666 ( http://www.eurobrick...howtopic=102535 ) and the mechanics/internal design of an 8-wide model from Commander Wolf ( http://www.eurobrick...howtopic=106654 ). Kudos to both of them for being willing to answer questions via PM, by the way! So, what went wrong? It turns out that you actually need to plan things if you want to do a 7-wide, because there's no good way to try and cram a what I assumed to be 6-wide internal structure into a 7-wide and have anything actually work out right. OH WELL. Could I save this? Maaaaybe, if I was willing to spend way more time than I have on it. Am I going to? Nope. The internal drive system consists of a AA battery box mounted vertically, with two L-motors driving a single four-axle truck each. There's a PF switch crammed in there as an extension lead/motor reversing switch, because I didn't realize until now that the trucks worked against each other if they got turned around by accident. Each drivetrain consists of a 20t bevel driving a 12t bevel, which then drives a series of 12t bevels to bring the power down into the trucks, giving a ratio of 3:5 for in-to-out. If I could somehow lop off everything behind the end of the 6x12 panel and still keep the fancy drivetrain, I'd be happy with the proportions; doesn't look like that's possible, so I'll be moving to a more traditional vertically-mounted motor setup without the extra gears. Maybe losing the extra gears will balance out in that I won't be losing nearly as much power to those gears, so the pulling power and speed will be somewhat similar? On my relatively small test loop, it'll pull five of the six Horizon Express cars (the sixth is the one with the motor and no battery, left out because I already have this engine to test with) plus the two container cars from the Maersk at a reasonable speed. Wheel slippage is definitely a problem, though I suspect it's because all the weight is in the center from the battery box and lack of body structure. The final revision I was envisioning before going to scrap the model would have ended up with the large plates on the side acting as a monocoque skin holding everything together. Leave your ridicule and/or constructive criticism below. Here's a cat picture to make it better:
This is a place to share your worst creations... This is mine- it's in LDD because I haven't built it since I was a kid- the actual ones I'd built were very similar- based on a half-size base plate with lots of wheels. Basically a big brick I used for ramming through other creations- mostly buildings. The difference was as a kid I wouldn't have bothered to match any colors. I re-built it in LDD just o get a feel for the software. I call it an Assault Van.