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There's been some discussion lately of articulated locomotives.... and one interesting point that's come to light is that the front "engine" assembly generally doesn't bear the weight of the boiler from above, but via the flexible coupling between the front and rear engines.
There are some drawings of how this works at: http://www.catskillarchive.com/rrextra/blwmal00.Html
What's interesting to me is the leverage that must be involved, particularly when you consider that you need to get as much adhesion out of the front "engine" as you do the rear one, or it's going to be breaking away and slipping all the time.
So how, in the model world, do you overcome the adhesion problem if bearing any of the boiler weight will cause tracking problems in the front truck?
Matthew (OV)
There are some drawings of how this works at: http://www.catskillarchive.com/rrextra/blwmal00.Html
What's interesting to me is the leverage that must be involved, particularly when you consider that you need to get as much adhesion out of the front "engine" as you do the rear one, or it's going to be breaking away and slipping all the time.
So how, in the model world, do you overcome the adhesion problem if bearing any of the boiler weight will cause tracking problems in the front truck?
Matthew (OV)