TheBrickster, on Jun 16 2009, 03:13 PM, said:
Interesting point. Lego has created some short hoppers, but also some long ones like 10017 Hopper Wagon from the My Own Train collection. I've seen real ones being just as long, if not longer than boxcars, esp. in the Western U.S. The shorter ones remind me of the old narrow gauge hoppers used in copper/mineral mining.
EDIT: I was hoping to get a few more responses from the Train Heads on the board.
- Just hoping no one trumps this thread with a Johnson Rod joke.
Wagons come in all shapes and sizes, and have done since before LEGO bricks arrived!
The extension from standard 6x12 or 6x16 truck bases to 6x24, 6x28 and 6x longer is just an evolution of LEGO trains. In blue rail days there were no 2-plate-high wagon bases. The extra thickness adds the strength required to make a bogie wagon. Try a couple of 6x16 plates end to end and you'll see the sag, which would wither fall apart, or derail if it affected how the bogies sat on the track. The bogie plate with a small pin was required as a step forward from the 2x2 turntable for the same reason. It was probably also cheaper to have just two standard truck bases, along with truck and loco wheels, a loco base and a battery tender.
From my point of view, building 8mm scale trains, the length in studs is approximately the wagon length over headstocks in feet. I use 6x24 wagon bases for 4-wheel wagons, not bogie wagons (except those for exceptionally heavy loads where a real wagon is built like that). My Pendolino has coaches up to 80M long and I've put straights between the curves to make wider, more realistic, curves.
I have recently returned to the smaller end of the range in
wagon building. Many many British wagons had a 10ft wheelbase. Coal trains of 99 wagons were common in the days when each coal wagon was shunted and tipped end-on. The real train changed to 47 automatically-unloading Merry-Go-Round hoppers in the 1970s and more recently fewer, larger, bogie hoppers, improving the efficiency of getting coal from the mine to the power station. There has therefore been a trend towards larger wagons in the transport of coal. It happened for
ballast hoppers too. Steel also saw a similar change, with coil wagons moving from a 10ft wheelbase carrying 2 coils to bogie wagons with 5 coils over a few decades.
In the 1950s and earlier, some long loads were carried on two single bolster wagons, with the load (maybe a rolled steel joist) carrying some of the axial shunting load of the train. There have been
bogie bolster wagons since the 1960s, for loads that would not fit on a small wagon and were too weak to use single bolster wagons. The UK underwent a modernisation in the 1970s with the advent of the TOPS system for vehicle classification. The 40ft ISO container also moved freight towards longer wagons. Given that the blue rail wagon bases were invented in the 1960s, I'm not surprised they are short because the majority of wagons were short. The blue rail era lasted till 1980 and the change to the product allowed it to reflect the more modern real railway, which is probably why TLG trumpeted the achievement of the motor bogie in the brochures. It is also the case that the majority of blue rail era engines were steam engines, including sets 171 and 182. 162 and 183 are notable exceptions but according to
Herby's New LEGO Train Depot they didn't appear till 1976-7. This is despite the advent of main line diesels in the UK in the 1950s and the demise of UK main line steam in 1968. Also 7725 was the first Electric Multiple Unit in 1981, followed by 7745, aping the trend away from loco haulage of passenger trains.
So yes, train sets have followed the trend of the real railway in wagon size and motive power, albeit a few years behind, which accounts for product development time, which has probably reduced over the years. We'll have to petition TLG to do preserved trains to regain the quality and nostalgia of those old wagons, but are there so many preserved railways outside the UK?
Mark
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