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[TC27] Lowrider
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Here's my entry for the TC27 - the physical model is also completed and tested, but I'm stil waiting for the 2x C frames (3167) to arrive (for testing purpose I just 3D printed my own pieces ). Anyway, I wanted to build something unique and different this time around. I've been thinking of building a motorized lowrider for a while now and this challenge was the perfect excuse to realize it. With this model I wanted to realize the following functions: Motorized suspension Steering mechanism connected to the steering wheel Working fake engine driven by rear wheels Openable (suicide) doors, hood and boot Proper, clean and spacious interior Along with those functions I also managed to squeeze one more additional function, which makes the car a convertable. Here's the end (digital) result: So as you can see, it actually uses the correct tires and rims which I think is a good start! Here's how it looks like all opened up - notice the inline 4 fake engine: Here's a look from the rear, showcasing the large rear typical of lowriders, which is also used to house the two BuWizz 2.0 bricks. I took great care to give the model some fins, proper brick-built lights, bumper, exhausts, etc... Looking at the underside you can see that the L motors are also structural, both axles are designed around them: And here's how the Driveline, Steering and Suspension system are integrated into the model: As mentioned before this is also a convertible which means that the roof can be unfolded and raised: Now for a little of backstory. Originally I tried using PU L motors to make this model a bit more intelligent and capable of holding the wheel suspension positions automacally. Unfortunately PU motors have a very sensitive current protection and were simply not capable of holding the weight of the car even though I'm using shock absorbers to help carry weight. Worth mentioning is also that suspension arms are shorter in the rear to compensate for extra weight. I could have added extra gearing, but that would make the model even bigger and suspension slower. So I took some L motors I had laying around from the Go-Kart project and used them in place of PU ones. Thanks to their shorter size I even gained some additional space and reduced complexity. During testing I decided to double up the BuWizz bricks. I did that for two reasons, first to increase the weight in the back for higher front bounces and secondly to supply the needed power to actuate 4L motor at maximum speed at the same time (each motor draws some 2 Amps when stalled in Ludicrous mode). I hope that's enough details and media for now, I will post photos of the real deal once I get the missing parts and I will of course record a proper video. -
Following numerous modifications on the Mack #42078, I decided to build an icon: The Granite. This is not my first one (See here) but built on a smaller scale (1:22 instead of 1:17). The proportions of the hood have been corrected compared to the original set. It is shorter now. It is far from perfection, but I think I have found a good compromise between looks and realism. All the necessary details are here: horns, jig lights, asymmetric sides… Some areas are not completed yet. This is the case of the front mudguards where I am missing some 1x1 black beams. Also, the taillights would look better with an oblong shape. The cabin (and all the insides) have been lowered by 1 stud leading to a redesign of the steering mechanism. The engine remains unchanged compared to the set. The front cooling fan has been replaced by a 20t simple bevel gear to accommodate the short hood. The rear part of the chassis is close to the one on the snowplow designed by @M_longer (42078 alternate). It enables to place the additional snow equipment. The tipper is white, with realistic shapes. Here are some views of the mechanics (very simple): The LDD file is close to completion. At this moment, I am not sure if I will share it because of the rear axles being the same as @M_longer’s. I did not buy the instructions for his alternate, all is built after photos. Hope you like it ?. Any constructive criticism is more than welcome!
