WK 3-Swinging arm

At first we learnt to correct any errors or adjust controls made in the previous task. The second part of the tutorial was the swinging arm, here i learnt about pivots and how parenting objects was critical in order for different parts of the body to move,point constraints were briefly discussed in the demonstration, however i personally could not make sense of my limbs in the outliner as i had parented them in the wrong structure of the hierachy, i reconstructed these items and ensured they fell correctly and later set keyframes in order for the arm to swing i used the references below to ensure i made correct changes to the short animation.
The first reference i used was a page from Richard williams animators survival kit were the key framing of the hands are shown.

This was usefull to locate the keyframing positionswhen the arm swings.
The second image was from a book called bone anatomy which i found on this website:

This image made the anatomy of the arm clear to allow fluid realistic movement in my characters arm.Also when considering joints referance gives a clear idea were pivots should be placed .

This was important as i could correct any previous mistakes, and with reference to professional work also the pivoting and parenting was interesting to me as they apply to many objects and characters shown in many animations were legs arms and any other pivoted objects are used, this tutorial also helped me builds up knowledge of the software and its capabilities.
For this task i felt i had created a swinging arm well as it seemed straight forward however i felt as though the arm was too floppy as it swung forward which let the overall piece down as shown below:

As for my extended task of researching into my own object with pivots i chose to do a locomotive steam train wheel area were two wheels would power the movement of the wheels based on pivots and parenting practices. I found that there were certain elements which seemed to advanced where expressions were more likely to be used, my first attempt of this worked well however compared to professional practices the wheels moved far too quickly , on my second attempt the wheels did not stay parallel.

Here i could see that i needed to develop and spend more time in this area as in a lot of aspects of animation these techniques are used daily, in order to gain further understanding i had a tutorial to show my work and correct errors made, well doing the tutorial i understood new ways to create a more effective steam train using relationship editor, expression editors and pivots and parenting which was extremely useful, which i can now apply to my own work in the future.