From the images I then started to create primitive polygons, building up the basic shape of my train. To make sure that the whole train was even, I only modeled half of it, then mirrored its geometry in the opposite axis. I also made sure that these sections sat next to each other seamlessly by using the snapping command. After using it a bit more from the truck tutorial I am now a lot quicker using it and am able to achieve what I want.
I used several techniques to re-create some of the shapes from the train. By using the split edge loop tool, I was able to add in extra vertices which I was then able to manipulate in the right manner. This is a very useful tool as you can change the objects shape really easily, which I used a lot when modelling my train. To make certain parts hollow, or to extract areas, I made the shape I needed in the first place, duplicated it, put it in place (most of the time within the object) and used the difference tool under booleans, edit mesh. When doing this I had to make sure that the object I wanted hollowing out was selected first, otherwise I would be left with the duplicated shape if that was selected first.
To create the wheel I had to add in extra edges from which I could extrude certain faces from. I had to ensure that the subdivisions on the cylinder were set to at least 2 otherwise it wouldn't work. Using the split edge tool, I added in the desired amount of edges, and by selecting the faces I wanted, I extruded them out to a certain point. To create the parts on the inside of the wheel, I created one from a cube - changing the vertices. I centred the pivot point and used 'duplicate special', making 11 copies at a rotation of 30 degrees. This is a quick and easy way to create the same object so many times around a certain point.
I have made sure that everything is correctly named under the outliner menu, this makes it easy to locate certain objects and any groupings I have created, if anything needs editing.
The last thing I need to model is the pistons, however I know when it comes to animating that the model needs to be constrained. I will either find out how to do this myself, or wait till I go back to uni to make sure I know the correct way to do it. I also need to add in colour and some UV mapping to my model which shouldn't take me too long. The next thing I need to do is work on my storyboard for my actual animation and see what else I need to model in regards to the trains environment. I will try and keep it simple so that it relates to the train, if I had something really complicated it would be far too time consuming and when the train is within that environment, it wouldn't be suited towards it. I have to take into consideration the style of the train. I will also have to figure out how I will animate it, will it be free moving or will it be constrained to a track? and also think about the 12 principles of animation and how I can incorporate some of these into my train.