00 vs Ho?

Discussion in 'HO Scale Model Trains' started by MarioBarb, Nov 21, 2005.

  1. MarioBarb

    MarioBarb New Member

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    Hi

    Bit new to the whole train scene here, but while browsing ebay for rolling stock I noticed someone differentaite between HO scale and OO.

    Any serious difference here.

    Also - how do the experts on this forum rate Hornby and Lima?

    Thanks

    mario
  2. wjstix

    wjstix Member

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    Long story short - HO scale/guage was first created many years ago in Germany by Marklin, with a scale of 3.5mm = 1 foot or 1:87. This scale caught on quite well on the continent and in the USA, but in Britain, they were unable to fit a motor into a UK locomotive built to that scale, so they kept the same track guage as HO (16.5mm) but increased the scale size to 4mm = 1 foot, or 1:72. So...both OO and HO use the same track guage, but OO engines, cars, buildings, people, etc. are slightly bigger than their HO counterparts.
  3. CommodoreVander

    CommodoreVander New Member

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    HO is 1/87 scale (3.5mm=1 foot) equipment that runs on HO gauge (16.5mm) track.
    OO is 1/76 scale (4mm=1 foot) equipment - usually British outline - taht also runs on HO gauge (16.5mm) track. OO also can refer to - mostly in the US - 4mm=1 foot equipment that runs on the proper gauge (I think 18mm, don't remember off hand) track, but very few if any people model in this gauge/scale combination anymore.

    The reason OO uses HO track in Britain has to do with the size of early motors and the fact that British outline equipment is a bit smaller than US or European equipment. because of this, somebody decided to create models in a larger scale for the British (the same thing was done with British N scale in the 1960's too).

    So basically, OO runs on HO, but is a larger scale...
  4. hminky

    hminky Member

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    Most "old time", 1870's, equipment made in the US is OO/HO. Here is the IHC 4-4-0 with the correct OO scale figures. The 4-4-0 is an OO scale (1/76) model running on HO track. I model the 1870's in OO/HO at:

    http://www.pacificcoastairlinerr.com/1879/why/
    Thank you if you visit
    Harold

    [​IMG]
  5. 60103

    60103 Pooh Bah

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    American OO is 19mm gauge. Lionel made a bunch of it just before WWII, but not after and it's a rare collectible now. There were other manufacturers doing kits, some of which Lionel plagiarized for their line.
    Nowadays, OO is confined to British modelling. There is a tinge of HO scale modelling in Britain, but not much. Effectively all the commercial scenic part is OO (4mm to 1 foot or 1:76) and the track is mostly 16.5 BUT there are groups working in 18.2 mm and 18.83 mm gauge.
    Recent commercial OO models run quite well on standard HO track; older ones do not.
    OO modelling of North American trains is rarer than HO modelling of British trains.
    The scale ratio is 8:7, bur the British OO trains are about the bulk of American HO trains.