danielhstahl Posted February 15, 2025 Posted February 15, 2025 (edited) I was looking for a new project and stumbled upon Lamborghini's Egoista. This had interesting shapes but most importantly only a single seat and no doors: I dislike trying to make a sturdy vehicle with two seats and doors; it is difficult work for mere aesthetic benefits. I knew I wasn't going to be able to accurately represent the steering column, front/bumper area, or the colors so consider this MOC "inspired" by the Egoista rather than a replica. Design goals: Concept car with unique angles and shapes, similar to the Egoista. I mostly succeeded here. The sides are probably the most boring but still have some interesting lines. I like the way the shocks are slightly visible, and the view of the engine through the side. Bodily strength. No "sag" or "warp". I mostly succeeded here. I can pick it up from the middle or the ends with minimal sag. Lateral warp is minimal, if any. Minimal "backlash". Keep gears to a minimum. I succeeded. Single gear to the steering rack. Transmission directly connected to the differential. The most "slack" is between the transmission and the fake engine where there are two "extra" gears. Do something "different" with the transmission. I mostly succeeded. At first I wanted to do a 6 or 7 speed transmission with a neutral gear using the "new" transmission pieces from the Yamaha motorcycle and McClaren 1:8. I also wanted to keep the transmission "flat", which meant using different techniques than the official McClaren set. In retrospect I could have built it more vertically and pushed the fake engine back. With a "flat" transmission I found realistic gear ratios surprisingly difficult to achieve. It turns out https://rebrickable.com/mocs/MOC-171508/Anto/ultimate-6nr-gearbox-with-forks/#details may be about as good as it gets, but I didn't like the inconsistent ratios between gears. In the end I used an approach similar to https://rebrickable.com/mocs/MOC-201002/paave/realistic-4-speed-sequential-gearbox/#comments and used only four gears. I had intended to have a "neutral" gear as well, but I mistakenly thought the Yamaha drum had "notches" at the 1/4 mark. Instead they are 3/8 apart, which makes 4 sequential gears + neutral impossible when the gears are on a single axle. So what could I do that was "different"? I decided to add a motor...but one that is by default decoupled from the transmission. This allows the car to be pushed across the floor with fully working gear shifts. I can then put it on a pedestal and turn on the motor to demonstrate how the wheels spin at different speeds with different gears. I also geared up to a shifter directly rather than using a ratchet or traditional "manual" gear shifter. I either directly use this shifter to move through the gears or, for ease since its hard to get fingers into the cabin, there is also an external knob that can shift the gears. On to the pictures! Not sure how to embed Google Photos (insert image from url failed), but these links "should" work. Main shot: https://photos.app.goo.gl/yQ6R6v9wBtDFSVo28 Side: https://photos.app.goo.gl/Cc2CZtckWJdg27ys9 View of the shocks and engine: https://photos.app.goo.gl/REViRCBQdU5E18zk8 Back: https://photos.app.goo.gl/UDVHZmfjjsz1Y5n69 Underneath: https://photos.app.goo.gl/VRxwbXX21A7sybZK7 Cabin: https://photos.app.goo.gl/vLzaaACnHzJ4T9qg9 Note the gear "shift" on the left side. Two videos: Edited February 15, 2025 by danielhstahl added image Quote
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