Week 15: Presentations

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 turning radius.
     Prevents natural turning motion. 
     Requires independent axles.

As shown the conical wheels have a more positive contribution, however, concerns of the inconsistencies in the track preventing the function of the bogie requires testing. Thus, to have a concrete decision before the final report a more accurate testing rig will be created to ensure the bogie can function on the track. 

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