Small Scale Bogie Design Team_LS

DECEMBER 5th: SMALL SCALE BOGIE IMPROVEMENT TEAM. The beginning of class period the remaining presentations were conducted including the small scale teams. A link for my presentation is available below. In my presentation it was addressed that a decision for moving forward with either differential or conical wheel design is needed to be made. To do so a comparison was made as shown below.  Conical Wheels Pros: Used in the majority of bogies today. Easy to incorporate and produce. Reduces wear through passive ("natural") turning. Cheaper No need for independent axles Cons: Hard to control. Does not account for inconsistencies in track. Making costs material and time. Differential      Pros:      Off the shelf part.      Precisely made.      Minimal assembly.        Not as dependent on track quality.      Cons:       Price       Made for lego axles       Relatively hard to integrate.       Gets benefits from tighter turn

In class presentations were given to which none of the small scale was able to present due to time constraint. From the Gantt Chart, this week marks the beginning of the FEA analysis for the bogie design. The main areas of concern will be the articulating joint and servo arm for track switching. Last years arm model was able to achieve a safety factor of 8.5 which should be similar to this years model as it is similar. However the linkage system will also have to go FEA to ensure that there is not failure at the joint where the parts are expected to have the least material. The articulating joint will go under similar analysis.