Adeor

New update. The high-floored articulated coach is generally about 85-90% complete altough articulate section now awaits for rebuild to accomodate springs and new motors. The build is 145cm long, roughly 10kg heavy and it has about 7000 pieces. Front section has * 20x 6.5L hard springs with tight coils at the end for suspension and stabilisation. Previous version had a problem with nose sagging even with additional support at the front axle. With suspenion it has not that problem * 2x PF XL motors * Servo motor that connects 3rd and 1st axle unit and steering wheel * 1x PF M motor for windshield wipers * Front lights that works * Lots of seats * Toilet with a window * 2 Business class seats with a table * Functioning steering wheel * accelerator and brake pedals Rear section waits for rebuild to have * 8x 6.L hard springs with tight coils at the end * 2x PF XL motors * Rear lights that works * Toilet wit a window * Proper colors Most difficult system to-be-build (I have no idea how to build these) * motorized door mechanisms When completed the coach * lights, doors, drive motors, windshield wipers and servo motor should be operable using BuWizz app that is controlled through at least 3 BuWizz batteries * Opeanable nose hatch * has finished roof * has finished cargo bay doors * has articulated curtain PS. Don't mind the mess - I am working with a limited space

New concept for suspension. Drive axle has 8x 6.5L Hard springs. Steering axle has 6x 6.5L Hard springs. With total 4 axles, there will be 28x 6.L hard springs. Links and some additional beams prevent sideways movement while only allow up-down movement. Also. This designs also allows sturdier articulated joint. New motor configuration would probably use 4x PF XL motors (2 under the articulated joint and 2 at the rear of the bus)

Actually I think I figured out the way how to include suspension for my build. It will require partial rebuild of undercarriage and possibly a complete rebuild of the bottom rear of the articulated section.

Not always. When I built the roof frame for articulated section, I did not even planned it. I just wanted to test off the top articulated ring. But yes, I started this project 4 years ago but I started with particular MOC last year after several tryouts. I found it still most complicated MOC, because there are no high floored articulated coaches/ buses that has instructions. At least I haven't found it. There is Ikarus 280 articulated bus in this forum but again, no instructions plus I wanted to high floored as I wanted to feature luggage compartments under passenger floor and passenger floor with seats - aka realistic as possible. I even wanted to build the nose roof curvy because I found Scania Irizar i8 is my favorite bus but I found it difficult to include the Irizar's head/nose.

Unless I can find a way to rebuild axle for articulated section, because it is based on this MOC https://rebrickable.com/mocs/MOC-5161/HallBricks/motorized-bus I have no clue how to add kneeling and suspension.

I doubt coaches can kneel. Plus I got told that since my bus is too big, there is no reason for suspension. Plus due to building techniques, I can only put suspension to 1st and 3rd axle. I really like to include the suspension because it will increase the ground clearance, wich is the width of 1 technic beam. Also: 1st and 3rd axle is based on https://rebrickable.com/sets/42110-1/land-rover-defender/ 2nd and 4th axle is based on this https://rebrickable.com/mocs/MOC-5161/HallBricks/motorized-bus

I thought it is time to update my progress. I really wish you can reply this time. Part count: unknown, but articulated section has 2400 parts (without seats, sidewalls and roof frame). Current features: * Steerable steering wheel through servo motor * motorized windshield wipers * partially motorized front door I hope that when I add second articulated joint at the top, articulated section will be levelled. Also for some reason, wheels for articulated section want to slip out with the axle.

New update. Articulated section now has slide-up doors at the engine bay and for baggage rooms. Started working with front section. For maneuverability, front section also has 2 L motors for drive axle plus 1st and 3rd axle are steerable through servo motor. Current lenght is roughly 1.4 meters and both sections has now total 3000 parts. Most difficult parts to be build are now nose, which will be based on Scania Irizar, articulated curtain and I guess roofing. I ditched the lighting of breaks, turn signals and reversing because I don't know how to make them work anyway. When new patch of order arrives (to finish the sides and floors of the front section) some changes may apply for the model . For some reason, I really crave for suspension but only 1st and 3rd axle are built in a way that springs can be installed. Also I have no clue what color should the coach be. Currently having a mix of light bluish gray, yellow and black.

New update. Bottom sides are now complete and according to studio.io, this project has almost 2200 parts (and articulated section is not even finished). In the future, part colors and some elements are about to change. Current dimensions - Width: 25,1 studs/20.1 cm (I tried to make it thinner by two studs but double wheels makes it impossible), Length: 74.3 studs/59,4cm; height is 18.1 studs/14.5 cm. Weight is almost 2 kilograms.

I would very like to see your progress in the future.

Thanks for the replay. This bus actually is not a Jumbocruiser anymore since I decided not to build it double decker (for now). This MOC does not feature pneumatics since it is expensive and complicated. If I ever decide to rebuild/ build another coach, I probably would consider pneumatics. I am not sure about the scale. As for Power Functions vs Powered Up, I did a research and decided to use PF. Again, rebuild/ new build probably has PU motors. This MOC would not have tag axle. I tried to include it but that would make it longer. The engine and rear end is copied from this MOC https://rebrickable.com/mocs/MOC-5161/HallBricks/motorized-bus/#details

A year later and I basically started over and made some progress. I started building from articulated unit and dropped the suspension. Also. I have read that there are articulated buses out there that has a rear engine that powers both third and middle axle. I have no idea if this works for Lego Technic build, but I am trying that out. Coach will now have two lighted toilets with kitchen corner on top. The bus will be powered by two PF L motors on the rear and possibly two PF L motors for middle axle. with current update, MOC is 53 cm long and has roughly 1000 parts. I would very much like to read some feedback.

Over a year later and finally having sort of progress with my project. Decided to drop the second floor entirely. The main part of the coach has currently 1002 parts and while I also started building artuculated unit, I have no idea how many part that section has. As a recurring issue, I still cannot figure out how to create perfect steering axles with springs. There are not enough examples as all of the suitable ones are for low-floor city buses. Issue with current setup is that main floor is too high up from the bottom and same issue makes clearance very low, even with bigger wheels. And I guess the body is also too long since second steerable axle has huge freerun when I turn front wheels manually. When I turn the wheel, rear axle doesn't turn at all. I hope this issue can be fixed in the future when I add a servo motor.

Yes. I will plan to use bigger wheels. I got recommendations to use 62.4x20 tires with 43.2x18 wheels

Small update for test build v2 First row of seats got "installed" and springs from the suspension got connected to the upper floor. Spring connection to floor was a tricky connection at first. Tested the suspension and discovered that the middle floor section between seats started to bend too much. I don't know if it is fixable when I finish the the frame but just in case I will add some crossbeams under the floor. What's better - powered up or power functions?