Union Pacific Big Boy 4014 by LetBricks Build and Review

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The Union Pacific's Big Boy Class is one of the most recognizable types of steam locomotives in the world. Their size and performance was the stuff of legends, and interest surged when 4014 was brought back to life in 2019. This iconic locomotive has been made in model form in various gauges across the years, but has yet to have a real winner of a model in Lego. Some crude models are available from Chinese companies, that are cheap cash grabs, while more detailed and impressive offerings are way beyond the price tag of the average consumer.

One design by MorningStrummer is offered on ReBrickable for a digital Instruction download, where you have to source your own parts. A Chinese company called LetBrick partnered with him to take the sourcing part away from the process, and deliver to you a ready to build Big Boy model. LetBricks was kind enough to send me a copy of this model to build and review. This monster of a build was my largest and longest build of my life, and I am satisfied with the end result. If you would like to purchase the model at the link below, please use code "LTMOC" to save 12% on your purchase!

MorningStrummer's original model for those who want to build this pure Lego Parts:

3D Printed Side Rods by Trained Bricks:

Shupp's Brick Train Stuff 3D Printed Locomotive Wheels:

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©ToledoRails 2022

[biddinge]

I still can't believe they gave up on the power function system. It was simply the best. The building components were just great.

[chesapeakedproductions]

This is one of the most detailed yet semi affordable brick sets on the market. I'm amazed how detailed it is. The valve gear is impressive, and the Centipede tender design is genius. I should consider purchasing this

[justinnakatsuka]

We have to encourage Letbricks to keep developing rolling stock in various colours. Hoppers and Tankers galore.

[Dadified]

Great model! We love Legos and have built a little station for our Lionel Trains. Our LionMaster Big Boy can tackle the tighter turns like the kit you built. Neat to see it in brick form!! Wonderful work!

[justat]

I’ve purchased LT products before. Currently a proud owner of Jepaz’s generation 3 GTEL, and soon to be the proud owner of his Veranda GTEL. Letbrick’s products are honestly pretty damned good. Their support team is also very quick to respond and answer questions you may have about the whole process and their company as a whole. Honestly can’t wait for my Veranda to get here

[PennsyPro]

Very nicely done review, and once again refreshing to actually hear the opinion of the reviewer, not just a spineless listing of stats.

[Dronesword]

That’s cool. I’ve seen their stuff online and have been somewhat skeptical, but this video has removed my doubts.

[ESAC_]

Woah, this is the best Big Boy steam engine I have ever seen! Keep it up!

[GageisGreat]

Usually not a fan of off brands, but this model makes me want to see more steam engines from these guys. Maybe SP 4449, N&W 611, or maybe some British designs like an LMS Coronation

[Rycam]

I received this set for Christmas from my family and was curious on curves it could take under power. Thanks for the review and showing what this unit can do with the different track setups. Now to get back to work on the locomotive for me.

[OTC]

Where did you get the 3d printed rods for the wheels? I would like to get som

[padrawr]

nice drum and base. sure love the mix :3

[bakkerem]

I built this behemoth, only to notice the motors were running in opposite directions. I had to partially dismantle one of the wheel sets to rearrange one gear, in order to reverse the drive direction.

[Tmpo_yakUdang]

Are the lego tracks made from original lego? If not, does it fit with the lego tracks? Also the motor is from Lego right

This thing is cheap it only costs 75SGD

[Mr.Rogers]

What was the model at 0:45? Any idea who designed that one?

[danieldoesdumbstuff]

I have no idea why but the “BIG BOI” at the start of the video made me laugh

[cardz_n_stuff_]

How do I get just the sticker packet? Can you reply the link just for the stickers?

[hitthebricks]

Very interesting, thanks for sharing.

[king_dozer_]

One more test that you could put this train through is seeing how many cars they can pull on a full battery before it fails

[sonnigundbelanglos]

beautiful functionality of the wheel s