Overall Takeaways:
Evaluate 3-wheel design for PDR
Solution:
IDK HOW TF TO DO THIS
Engineering drawing checks shouldn’t just be checked by a peer when made, but have a proper validation system
Solution:
Drawings should follow ASME-Y drawing standards
We can use the other two cars as reference for learning along with Google
In industry you can release something, then you can do three signatures (your immediate superior, then the lead, then the chief engineer or mechanical lead)
Our structure for this would be person manufacturing → system or subsystem leads → Andrew Chang, Mechanical Lead, or ChiefE
If a system lead or subsystem lead is the one manufacturing then the checking system should go as follows:
system or subsystem lead → system lead or subsystem lead → Andrew Chang, Mechanical Lead, or ChiefE
Have a larger checking system to ensure that the parts that are being manufactured are known by the leads and everyone is on-board with how it is being made.
+/- 5 pounds is a good start but doesn’t actually give us an idea of where to base our numbers on to know how much +/- we can actually do for weight
Solution:
Measure weight tolerance part by part instead to accurately know the weight if it’s going to be a machined surface then you can just estimate the part weight based on the material and be close to CAD since it should be pretty accurate when machined
If it’s something that we don’t machine then take the dimension of the part increase it by 5 thou and find the weight from that
Make sure to use public channels for communication
Solution:
Use @messages rather than dms for technical conversations so everyone can learn from them or add feedback as needed. This has to be a collective effort that the system lead can’t completely manage.
Suspension Specific
How do we ensure the 60/40 ratio for weight distribution
Solution:
Kayla I need help with this
Aluminum welding or things that might be challenging shouldn’t be steered away from
Solution:
Look into what part might be challenging to make or might require aluminum welding and evaluate if the time taken to research and manufacture that is worth the time or would it be better to spend that time on a slightly less efficient part to optimize other parts
Factor of Safety
Solution:
Create a list of what parts need a factor of safety, then you can holistically assign each part an accurate factor.
Some of our factors of safety come from regs + real-life conditions
Fatigue
Solution:
Look further into fatigue analysis to understand cycle life
Look into aluminum fatigue since it does
Shock spring rate
Solution:
Creating a shock characterization jig using a jig we made last year as reference to help us find the spring rate
Steering Specific
Evaluate bump steer:
Solution:
Unsprung Specific