JLiu15

The instructions are now published on Rebrickable: https://rebrickable.com/mocs/MOC-245043/JLiu15/2003-new-flyer-d60hf-metro-transit-bus/#details

Just PMed you

It’s missing from my main profile page (https://www.eurobricks.com/forum/profile/177480-jliu15/) under “Activity” if you scroll down to it.. If I post or edit something, it’ll show up briefly before it disappears again. For replies in older topics like this one it stays, but for my two most recent topics they disappeared. Here’s a screenshot from this morning when it did show up under “Activity” before it disappeared

Thanks! I love how the doors turned out, especially with the pneumatic mechanism.

Just to add - I can see my replies to the topic under my activity after posting them, but after a while they'd disappear as well. If I edit a reply it also reappears under my activity before disappearing again shortly after.

Thanks! I do have a WIP topic for this MOC, which could be found here: Thanks! As an AFOL and bus enthusiast, I love combining these interests for my bus models. Despite some shortcomings this one had, its building process was one of the most rewarding among all my MOCs.

Thank you! btw, for some reason I don’t see the topic under my activity on my profile page when I posted it. Do you know if this is an issue with Eurobricks, or perhaps it changed what shows up under your activity? Thanks! Edit: I could see my replies under my activity after posting or editing them but after a while they'd disappear as well. Weird...

I went to my profile page after making a new topic, and saw that it was missing where it shows your activity. But if I go to the Content Type menu and click on Topics, I can still see it. It also shows up just fine when I click on the forum it’s posted in. I noticed this with a topic I posted a while back as well, where it did not show up under my activity on my profile page, but it was still visible to others on the forum. Does anyone know what may be causing this issue and how to fix it, or perhaps Eurobricks changed it recently? That topic was from late June, and an earlier topic I posted in April still shows up under my activity, including when I initially posted the topic. Thanks!

Model of a 2003 New Flyer D60HF articulated bus from Metro Transit in Minneapolis-Saint Paul, Minnesota. The model features motorized drive, steering with working steering wheel, a removable Cummins ISL engine model, and pneumatically operated passenger doors. Functions/features: Drive Steering Working steering wheel Removable Cummins ISL engine model with moving pistons Pneumatic passenger doors Instructions available on Rebrickable: https://rebrickable.com/mocs/MOC-245043/JLiu15/2003-new-flyer-d60hf-metro-transit-bus/#details In the 1990s and 2000s, Metro Transit in Minneapolis-Saint Paul, Minnesota ordered a large number of New Flyer D60 high floor articulated buses. Nicknamed the Galaxy, the D60HF entered production in the late 1980s and was produced until 2006 as a final option of a Metro Transit contract. The final units produced for Metro Transit in 2006 were the last high-floor articulated buses ever built in the United States and Canada. Over the years, Metro Transit's D60HF buses were gradually replaced with newer New Flyer D60LFR and XD60 articulated buses, and the final units in Metro Transit's fleet were retired in late 2021. My model depicts bus 3143, which is a 2003 model built in January 2004 and now privately owned by a friend of mine in Pennsylvania. Prior to its retirement, 3143 operated out of Metro Transit's South Garage, and later out of Heywood Garage in May 2020. A number of 2003 units were already retired by Metro Transit in 2016, but 3143 and several others were returned to service in May 2020 to provide space for social distancing amidst the COVID-19 pandemic. The remaining units were also retained for service during the 2021 Minnesota State Fair in August-September 2021, and were retired shortly after. 3143 operated in revenue service for the last time on September 5, 2021 and is among the final D60HF buses in Metro Transit's fleet to operate in revenue service. I had the opportunity to see 3143 in-person at the 2022 NJ Historic Bus Festival, which inspired me to eventually build a LEGO version of it. The building process began in summer 2024, starting with the rear section's chassis. Because the model was likely going to be heavy when finished, I used two Power Functions XL motors for propulsion. The two XL motors are placed transversely in the chassis, between the rear door and the rear axle, and are hard-coupled using knob wheels. Placing the motors longitudinally would have required more length, which was not ideal as the rear door and rear axle are relatively close to each other. This section is designed to be very compact, with the two XL motors taking up all available transverse space between the outer body panels and the rear door and rear axle placed as close as possible to the motors. This allowed me to still have space behind the rear axle to include a Cummins engine model, as the real-life version is powered by a Cummins ISL engine. Thanks to the high-floor design of the original bus, I was able to include a floor made using flat Technic panels, with gaps kept to a minimum. This had the benefit of keeping many mechanisms hidden as well, such as the steering mechanism, which is placed entirely under the floor except for a small portion of the PF servo motor that's exposed. The steering motor's output is also connected to the steering wheel. Unfortunately, some of the bevel gears connecting to the steering wheel are exposed as their diameter prevents covering them with Technic beams/panels. A challenge for this model is the articulated joint with seats in it - the real-life version has four passenger seats in the articulation joint's turntable which rotates halfway relative to the front and rear sections during a turn. Keeping the floor continuous here was particularly challenging as it is perfectly circular on the original bus, and perfectly round shapes in LEGO are rather difficult to create outside pre-made circular pieces. In the end I went with a design using panel fairings 2387/2389 around the perimeter of the floor section at the articulation joint, and the floor flows pretty seamlessly from the front to the rear section. The bellows use the same principle as in my New Flyer XD60 model, but thanks to the floor section at the articulation joint, I was able to keep all the rubber bands maintaining the shape of the bellows hidden beneath it. There are 68 passenger seats (34 in the front, 30 in the rear, and 4 in the articulation joint), consisting of a mix of high-back and regular ones. Another friend of mine owns bus 3200, a 2006 model, and I was able to design the seating layout exactly like in the original bus thanks to photos provided by him. AFAIK, the 2003 and 2006 models are largely similar to each other, and many of my model's details were done accurately thanks to his photos. Above the chassis and interior, there is a Technic roof frame in both the front and rear section housing two independent pneumatic circuits for the front and rear passenger door. Because the two passenger doors are independently controlled, I made each door use its own compressor and valve instead of e.g. having them share a compressor but using their own valves. A PF L motor is used for each of the pneumatic circuits, driving both the compressor (geared up 5:3) and the valve through a clutch gear and 3:1 reduction. The compressor/valve setup is built in a compact manner to ensure a mechanically efficient mechanism as the clutch gear slipping and the compressor add a significant amount of friction. They are placed below where the roof AC units are located in the finished model, as the valve's lever extends past the roof height slighly when passing through the middle position and the roof AC units can be designed hollow to allow the lever to pass through. Although I tried to ensure that the hose lengths for the front and rear sections are largely identical to each other, I still noticed the rear door to open and close slightly faster than the front door. Nevertheless, the pneumatic doors are one of my favorite features on this model, because its movement is much more realistic compared to if it was purely mechanical (e.g. a linear actuator or a worm gear). Designing the bodywork was relatively straightforward, and because Metro Transit uses a yellow and blue stripe for the livery, I was able to easily make it using LEGO pieces. This kept the need for custom stickers to a minimum. I had already designed much of the bodywork in Stud.io by January 2025, and the Metro Transit livery was recognizable even without stickers. I also like how the front destination sign turned out, as the protruding curved destination sign design is one of the iconic features of New Flyer high floor buses. This is further pronounced by the fact that Metro Transit has the area around the destination sign painted in yellow, and I feel my design captured the color break here pretty well. I also like how the rear turned out, especially for the rear grille and destination sign. However, there were still some shortcomings with the design, especially with the front and rear lights. The amber turn signal lights on the front and the two center brake lights on the rear of the real bus are much smaller, and it was difficult to go smaller than one-stud width for these lights. The side windows also had some inaccuracies which I feel could've been remedied by considering the body panels' design while designing the chassis and seating layout. Because of the position of the doors and seats, I had to make some windows smaller/larger than others by a stud (when they look to be all the same size on the real bus) to prevent the windows' positions from looking out of place relative to the doors and seats. The roof is largely made using 6x6 tiles, and because the PF rechargeable battery box is placed near the rear of the model facing upward, I added a switch on the rear that can be used to press the power button on the battery box, as well as remove a section of the roof to access the battery box for charging. The roof AC units on the real bus are sloped towards the top, and thanks to the 5540 piece becoming available in white, I was able to capture the slope shape of them while maintaining a seamless finish with the top surface primarily made using tiles. I'm overall satisfied with this model turned out. It is my fourth motorized bus model and my largest MOC to date (with over 6600 pieces). The model performed well mechanically, and the two XL motors do not struggle at all to move the heavy model. While I was initially concerned about the pneumatic door mechanisms having more possible points of failure than a purely mechanical design, the doors worked as expected every time I opened and closed them. Despite some shortcomings with the aesthetics, I had a great time designing and building this MOC, especially with this being my first time doing a model of a specific unit privately owned by a friend. It's also my first model of an older retired bus, as my previous bus models were all of newer buses in active service. Video: Photos:

I just noticed this today while making a creation and looking for a control profile! It showed "unable to fetch the profiles" for both public profiles and my profiles so I figured maybe I needed to update the app - and noticed that I can't find it in the app store (I'm on iOS). This is my first time using SBrick since 2023, and thankfully I still have my previous MOC complete with a control profile that still works, so at least I still have something to use.

Thanks! Being able to press the power button and allowing it to be accessible for recharging plus keeping it concealed was definitely a challenge, but in the end the 2L thin liftarm for the power switch on the rear is the only thing that's exposed on the exterior for the entire setup.

Not sure if this has been asked elsewhere, but today I tried to create a new control profile and made a new creation in the SBrick app. However, when I went to select a control profile, it shows "unable to fetch the profiles" for both public profiles and my profiles. This means I am unable to control my MOC using SBrick since it cannot get a control profile. Does anyone know how to fix this? I'm on SBrick v4.8.3 btw. Thanks!

UPDATE 8/15/25 The model is now completely built, after just over a year of work. All that's left to do is to make the custom stickers. The model contains over 6650 pieces, making this my largest MOC to date. Since the previous update, I had to modify some of the roof as the roof AC units did not need such a large gap. Thanks to this piece recently becoming available in white, I was able to capture the sloped edge around the AC units while maintaining a smooth upper surface without studs. Acquiring them was a challenge given how new they are, and I ended up buying all the available ones from the only Bricklink seller to have them at this point. Even then, I had to buy a Lego City 60465 set (the only set it's available in so far) to have enough of them. I'm overall satisfied with how the roof AC units turned out given the availability of LEGO pieces. The final part left to build after this was the bellows, which are designed identically in principle to the bellows on my New Flyer XD60 model. Because the real bus has 4 seats in the central section of the articulation joint (two on each side), I was initially concerned whether that could affect the bellows, but in the end the bellows still worked well and the central section with seats did not affect the bellows at all. Thanks to the space below the "floor" of the central section, I was able to stabilize the bellows with rubber bands below it. In the end, the model is pretty heavy and the rear section can sag a little at the articulation joint, but the bellows still seemed to handle just fine when I tested it driving and turning. Overall, I am satisfied with how this model turned out. It is my fourth bus model, and I have definitely come a long ways since my first bus model (the New Flyer XD60). In fact, it has nearly 1500 pieces more than that model. On this model, I was able to include a full interior as opposed to a mere skeletal structure below the seats. The pneumatic doors also open and close much more similarly to a real bus. And with two PF XL motors used for propulsion, the model is able to move at a reasonable speed without the drive motors do not struggle with the weight of the model. The photos and video for this MOC will be coming soon. I will also be publishing instructions for it on my Rebrickable. Photos:

UPDATE 7/26/25 After a year since starting this project, the entire bodywork is finally complete. All that's left to do are the bellows and the roof AC units. Since the previous update, I've built a roof frame for the rear section containing the pneumatics for the rear door, as well as the SBrick which allowed me to finally connect and organize all the wiring. A challenge in this section was fitting the entire pneumatics control mechanism (motor, compressor, valve) into the space forward of the rear door as that's where the pneumatic cylinder for the door is placed. I initially tried putting the motor behind the rear door and diverting the drive from the motor around the cylinder using gears, but it ended up having a lot of friction where the motor would stall due to the friction from the clutch gear for the valve as well as the compressor. In the end, I was able to fit everything forward of the rear door, but the compressor sits very close to the articulation joint. Once the rear door mechanism was complete, I noticed that it would open and close faster than the front door. I figured it was due to the longer pneumatic hoses for the front door mechanism so I modified the front section's roof frame to bring the pneumatics control mechanism closer to the front door. However, the difference in speed was still there, so I figure it might be due to the internals of the cylinders (they are quite old; I got them in a used 8436 set). Another modification since the previous update is the drivetrain. As the model got heavier, I began to notice the gears skipping in the drivetrain, especially at the differential. Despite the limited space, I was able to reinforce the drivetrain and add a heavy-duty differential, although I did have to move the Cummins engine model back by one stud. Now even with the entire bodywork in place, the two XL motors do not really struggle to move the model. I'm overall satisfied with how the bodywork turned out. To ensure a largely seamless finish for the bodywork, I also added a power switch which not only hits the power button on the 8878 rechargeable battery box but also can be used to remove a cover to access its charging port. The switch is accessed by a 2L thin liftarm on the rear, and this setup allows the battery box to be fully concealed. While there were some areas where I felt like I had to compromise or could've turned out better, I feel it definitely captures the looks of the original bus. Photos:

Hi everyone, I was using Stud.io when it froze and crashed, and after it crashed I saw that my file was a .io.backup file. I tried opening it in Stud.io but the parts never load (gets stuck at 0 / 1 when parsing). After I tried opening it the file shows as a .io file now, but under file type it still says "BACKUP File" when I view it in File Explorer. This is a rather large model so I really hope it can still be recovered. Has anyone else experienced something similar and managed to get their file to work again? Thanks!

It's pretty heavy but I think two XL motors should be fine. A single XL motor was enough to power my New Flyer XD60 model from 2022.

UPDATE 5/25/25 The bodywork for most of the front half is now complete, and the build is starting to take shape. There is a gap in the roof where the front roof AC will go. I plan to make it easily removable, as the pneumatics for the front door are placed in that area, which will make it easy to see the pneumatics mechanism in action. Photos:

UPDATE 5/18/25 I've made some progress on the build for the first time in several months. The front left body panel is in place, and this was thanks to the front roof frame being installed. The front roof frame contains the pneumatic compressor and valve for the front passenger door. The front passenger door is also in place and is functional now. Photos:

Thanks! The large angular motor really helped me make the model compact while still offering AWD, as there really isn't much space for electronics once you have the large dump bed.

The instructions are now published on Rebrickable: https://rebrickable.com/mocs/MOC-220248/JLiu15/classic-dump-truck-xl/#details

A sequel to my Classic Dump Truck from 2022, built at a larger scale. Features AWD drivetrain, a flat-six piston engine, oscillating rear axle and a pneumatic dumping mechanism. Functions: Drive (AWD) Steering Flat-six piston engine Oscillating rear axle Opening hood and doors Pneumatic dumping Instructions available on Rebrickable: https://rebrickable.com/mocs/MOC-220248/JLiu15/classic-dump-truck-xl/#details Ever since building my Classic Dump Truck MOC in 2022, I always felt like it still had more potential. I managed to pack plenty of functions/features into it, but felt like a larger scale would allow me to do more. I wanted to scale it around either the 52985 or 2491 tires. This would at the very least allow me to use wheel hubs, making an AWD drivetrain easier to incorporate as it was something missing from my previous, smaller version. I went with the latter option for the tires since I found their tread to be a good fit for trucks. The building process started as a very compact build around the front axle. I used the Control+ large angular motor for propulsion, as it has a front and rear output which makes a longitudinal driveshaft possible while taking up minimal longitudinal space. I initially wanted to use planetary hubs, but found that the drive speed would be too slow. The final drivetrain design used normal hubs instead (the front hubs are the ones from the 42160 set so I could still drive them with heavy duty CV joints). The only gear reduction in the drivetrain is the 12:28 reduction at the differentials, and while it's able to handle some light off-road driving, it still felt underpowered especially when driving up inclines or over larger obstacles. Another stage of gear reduction could've helped, but that would most likely require moving the drive motor at least two studs up. A flat-six piston engine is placed just above the steering motor, connected to the drivetrain via a set of gears in front of the front axle. Directly behind the drive motor is the Control+ hub. Because the driveshaft to the rear axle passes under it, I used a long heavy duty CV joint to allow the driveshaft to be pushed into the extendable section of the CV joint and removed from the large angular motor's output. Removing the driveshaft here allows access to the battery compartment for replacing the batteries. The hub is reinforced using two 3x19 frames, and just behind the hub are two Control+ large motors placed side by side for the compressor and valve of the pneumatic dumping mechanism. All in all, I feel that the design made good use of every inch of space available. The large number of pin holes on the Control+ motors and hub also allowed them to be used as reinforcement points, which also facilitated the compact build. It's been a few years since I used pneumatics on a MOC, and to give it a little something extra over my previous version, I decided to use pneumatics instead of a linear actuator for the dumping mechanism. I was able to fit three 6L compressors into the limited space just before the oscillating rear axle. In the Powered Up app control profile, I set up one slider to drive the compressors' motor with proportional speed and also the valve motor like a steering servo motor, returning to the center position when the slider is released. This closes the valve when the compressors are not running, preventing air from leaking. In fact, I was able to display the model with the bed fully elevated for several days without it collapsing back down. Because of the size of the dump bed, I used two 2x11 pneumatic cylinders instead of just one, as it offers more capacity. In the end, the pneumatic mechanism was able to handle a decent amount of load in the dump bed without the compressors struggling. I wanted the dump bed to be more detailed, but was worried that it may cause the pneumatic system to struggle with heavier loads so I kept it simple. Overall, the pneumatic dumping mechanism has been my favorite part about this MOC. As for the bodywork, my favorite part is how the front grille and hood turned out. The grille and front bumper are built with System pieces as a single module, which allowed it to be more detailed. I also incorporated metallic silver elements for the grille, bumper, side steps and mirrors (although I had to settle for light bluish gray at certain spots where a metallic silver piece isn't available). The sides of the hood are also finished with System pieces. The hood and the mudguards from the 42114 set allowed for a good blend of System and Technic in the front. Because the grille/front bumper are built using System pieces, it is built at an even stud width, which made things trickier with the odd width of the Technic chassis. The doors maintain the even width, but the rear and roof of the cab are built at an odd width connected to the chassis, with tiles adding a little more width and also covering up pin holes. I feel the cab section could've turned out better, but still I've managed to put plenty of details in the cab including a steering wheel and bench seat. This is an improvement over the previous version, as that one lacked an interior. To access the power button on the Control+ hub, a lever is placed behind the seat to press the power button. Overall, the model was an improvement over my previous Classic Dump Truck. It offered better functionality and a better designed bodywork, although there was definitely still room for improvement. The pneumatic system worked well and the oscillating rear axle allowed it to do some simple off-road driving. However, the model could've benefitted by having a little more torque in the drivetrain, as well as a more reinforced chassis as I found the chassis to still bend a little when the model is placed on the ground. This is especially noticeable with the cab and dump bed in close proximity to each other when the dump bed is lowered. Still, I'm pretty satisfied with how the model turned out, especially being able to fit all the electronics and mechanisms in such a compact way in the model. Video: Photos:

UPDATE 3/1/25 I've finished designing the dump bed in Stud.io. I made a rendering of the model; this should be how it looks once finished. I've also tested the pneumatic system, and the three 6L compressors give the cylinders plenty of force, so lifting the dump bed shouldn't be an issue.

UPDATE 2/23/25 The rest of the chassis is now complete, with the rear axle in place. I've also installed all 4 wheels. The rear axle has an oscillating suspension, and actually has a decent amount of travel. I've also included two tanks on the sides made using System curved slope pieces, giving a bit of detail to a section that otherwise has few details. I still need to connect the pneumatic hoses and test the pneumatic system. Instead of pre-cut hoses, I will probably just cut short hose sections from a longer hose. This is because there will probably be quite a few very short hose sections, such as where the three 6L compressors' inputs are connected together to form a single input into the valve. Other than that, the only thing left to build now is the dump bed. If you guys have any suggestions for me, please let me know. Photos:

Note the long CV joint in the driveshaft. Moving it back will allow you to disconnect the drivetrain where the hub's battery cover is. I am also using the hub with screw cover so no need to reach for the clip openings. Yup, I definitely like how the front parts of the body turned out, especially with the use of System pieces to add some curvature. Don't the tires only officially come in black though? I try to have my parts matching the official colors whenever possible, especially as I will be making instructions using the Stud.io model later.

That's strange. I can see the photos even when not logged in. I'll paste the links to the images instead. https://imgur.com/bsGEzlx https://imgur.com/Zdcn1Zt https://imgur.com/nyRIWKR https://imgur.com/W5efN9a https://imgur.com/UHa3Jve https://imgur.com/bv7aGgg Thanks!