Analysis
For this project, students will build an RC Baja that will meet ASME standards for the competition being held in spring of 2023. Analyses will be constructed each week in order to be on track for the build process. Students find problems with the project and use prior knowledge and experience to find solutions.
In Figure 1, shows the analysis that was conducted to find the actual motor power of the Reedy Sonic 866. This was necessary because the given motor power will not provide tolerance and efficiency without proper calculation. Students found that the motor with 90% efficiency will provide 437.4W rather than the given 486W.
Figure 1: Actual Motor Power
In figure 2, shows the analysis that was conducted to find the allowable screw diameter for the steering bracket. From a previous analysis, students found that if the device was at max speed and hit a wall it would cause 187lbf per tire. Applying this force and solving for d, the students found that 0.22in was the minimum allowable diameter for each screw.
Figure 2: Allowable Screw Diameter
In Figure 3, shows the analysis that was conducted to find the force of impact on the front tires when the device is operating at max speed. assuming the device weight, converting mph to ft/s, and that the device hitting the wall will completely stop after 0.5 seconds, the students were able to find the force of the hit to be 518lbf or 259lbf per tire. Knowing this, the team will be able to find much more analyses with this information.
