| No discussion of LEGO steam locomotives would be | | | | with other 12V-powered sets, weights are included to |
| complete without mention of the 7750 Steam Engine | | | | ensure good electrical contact between the rails and |
| with Tender. Arguably the greatest and most beloved | | | | the train motor. The weights also help to prevent |
| of all steam engines ever made by LEGO, number | | | | slippage of the drive wheels. |
| 7750 is unique as the only steam engine to include | | | | Set 7750 came with two minifigures: a driver and a |
| large driver wheels. Those wheels give the locomotive | | | | fireman. Like other sets from the 12V era, it included a |
| its massive, powerful stance and evoke images from | | | | decal sheet that permitted the set to be customized |
| the height of the steam era. Today 7750 stands as | | | | with logos from most major national railways in |
| the largest steam engine set ever produced by LEGO. | | | | Europe. No track or additional accessories were |
| Like many LEGO trains from the 12V era, 7750 is | | | | included; however, the set did include functional lighting |
| based on prototypes from the German railways and | | | | elements. Two lighting bricks illuminate the marker lights |
| wears their traditional black and red livery. The | | | | at the front of the engine and the red lights at the rear |
| locomotive resembles an actual Deutsche | | | | of the tender. Building a 7750 clone from parts is |
| Reichsbahn-Gesellschaft Class 64 locomotive, which is | | | | difficult due to the rarity of several parts found in the |
| a large German tank engine with a 2-6-2 wheel | | | | set. Some of these parts can be located at for a |
| configuration. The LEGO rendition uses a different | | | | modest fee. The large train wheels were featured only |
| wheel arrangement: two trucks, each with a pair of | | | | in this set and a subsequent service pack. The red |
| tandem axles. This change is probably due to the | | | | train motor shows up only in one other set, the 7730 |
| difficulty of constructing a realistic three-axle truck that | | | | Goods Train, which features a smaller steam engine |
| can negotiate tight curves without the use of blind | | | | of a similar livery to 7750. The black windows used in |
| (flange-less) driver wheels. In the modern era, Big Ben | | | | the cab of the engine are hard to find in quantity, and |
| Bricks produces blind wheels for this exact purpose. | | | | the steam cylinders and red buffers have always |
| However, this set from the year 1980 predates BBB | | | | been difficult to find in quantity. Red bogey plates were |
| wheels by nearly two decades, and LEGO evidently | | | | featured in 7750 exclusively. As a result, clones of |
| decided to pursue a solution that would not require | | | | 7750 are rare, but builders have designed many |
| separate molds for the flanged and blind driver | | | | excellent replicas of German locomotives that remain |
| wheels.Locomotive 7750 features another subtle | | | | more faithful to the original prototypes. |
| compromise of realism in its design: it includes a tender. | | | | Some view the 7750 steam engine as being simplistic |
| On a real tank locomotive, the water and fuel are | | | | and lacking in authenticity; however, it is worth noting |
| carried on the engine itself; hence, a tender is not used. | | | | that this set predates the widespread use of SNOT |
| The LEGO version of the engine utilizes its tender as a | | | | techniques by many years. Despite its compromises in |
| means of propulsion; the 12V train motor is located | | | | realism, 7750 is a classic among LEGO train sets and |
| beneath the tender. This arrangement is familiar to | | | | a particularly unique LEGO locomotive. As a result, the |
| LEGO steam fans, who frequently use powered | | | | set fetches handsome amounts on eBay, typically into |
| tenders as a straightforward means of powering a | | | | the hundreds of US dollars for copies in good condition. |
| locomotive. | | | | It is certain to remain a favorite of LEGO train fans, |
| The tender also gives 7750 a more impressive look, | | | | and it holds a place in history as one of the greatest |
| like that of a mainline passenger locomotive. Consistent | | | | steam locomotives LEGO has ever produced. |