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Welcome, I'd like to present a bus Solaris Urbino 12 IV. Specifications Scale 1:15 Length 103s / width 23s / height 27s (83/18/22 cm) Weight: 5,4 kg Front suspension: Independent, double-wishbone Rear suspension: Live axle Suspension with kneeling system RWD 2-speed gearbox AA+AAA Battery Boxes 7 motors Functions Driving - 2XLs Steering - L Opening doors - M Kneeling system - L + Servo Changing gears - M LED headlights Working steering wheel History Some time ago I decided to build a bus. I chose Solaris, beacuse it's a polish concern, which is producing buses and trams. I started building in mid-Febraury, and I finished it few days ago. Chassis The biggest challenge was to construct a strong chassis. We need to remember that it's a low-floor bus. The drive motors and the gearbox are (like the real one) located veritically on the left, behind the rear axle. It's causing big stress and I had to overcome it by the chassis. It consist of 3 parts: at the bottom there is a floor 2s thick, built from panels 5x11 and frames; at the top there are beams 3x3s on each side of the bus, they are built from liftarms. These two elements are combined by 7 rungs. The construction of the chassis is similar to the hulls of ships and planes. Drivetrain The bus is driven by 2 XLs. Gearbox ratio: I - 12,6:1 II - 4,2:1 The gearbox is built from frames, using 2 gear 24, 1 gear 12 and 1 gear 36. The gears are changed by M motor and mini linear actuator. The biggest problem was to lead the drive from gearbox to the axle. It is the weakest point of the bus - 2 universal joints, connected to the gearbox and to the axle, under a load break. Steering For steering I used L motor with reduction 14,4:1. It propels the gear rack 1x13 and also the steering wheel. Suspension Front suspension is independent with 2 yellow 6.5L absorbers per wheel. Rear is live axle. It has 1 grey and 5 yellow 6.5L absorbers (1 grey and 2 yellow for the right side and 3 yellow for the left side). Opening doors + kneeling system The doors are opened by M motor, reducted by 40:1. The drive is transmitted by liftarms used as links. The kneeling system is realised by 2 medium pneumatic cylinders. The pneumatic wires are connected only from one side, so the bus can rise using the absorbers. L motor drives the compressor and servo opens the valve with reduction 3:1. These 3 motors are electrically coupled, so in each door there is a gear with clucth. Thanks to that, the compressor doesn't stop at any time. The most wanted photos :) From the top From the bottom Some photos Gallery
Welcome everybody :) Today I’d like to present my new MOC, which was built especially for a contest on LugPol. Fiat 126p Specifications Scale 1:8 Length 51s / width 23s / height 19s (41/18/15 cm) Weight: 2040 g Independent suspension Rear wheel drive RWD 4-speed sequential gearbox AAA Battery Box 88880 Functions Driving (RC) Steering (Servo) Changing gears (L) Front LED lights (switch) R2 dummy Working steering wheel Opened bonnet and trunk Opened doors with lock History I started the building of the model at the beginning of the December, to the Christmas I built chassis, later I created the body. Because of creating the Fiat, I canceled my previous project – Mercedes SLS, becuse it wouldn't fit in the rules of the competition. If you don't know, how the original car looks like, here are the pictures. Drivetrain Fiat is driven by single RC motor. The gearbox is based on Sheepo's one from Veyron. Gearbox ratio: I 5:1 II 3:1 III 1,67:1 IV 1:1 To change gears I used 1 L motor. The ratio is 8:1 (worm gear). Fiat is a bit slow, because at the beginning I didn't want to exceed 1,5 kg of weight, and I hadn't got enough time to improve gear ratio or use 2 Xls. Steering For steering I used servo motor, which propel the gear rack 1x7 with ratio 1,67:1. Suspension The front and rear suspension is independent. I tried to make the rear like the real one, what you can see in the picture. Some photos Gallery