2021-04-20 Meeting Minutes - Drivetrain
- DRIVETRAIN FOLDER from Summer 2020! Contains a lot of similar questions
- Reference 2021 rover for mechanism weights and CoG
- Carbon fibre research
- Typically include mounting points in the mold when creating a carbon fibre member
- Cutting and drilling must be done using sharper tools (i.e. diamond drill bits)
- Should avoid as much as possible
- From what we can see: Michigan doesn't machine their carbon fibre boxtube → clamp to tube, using inserts, adhesive to a receptacle tube, etc.
- One technique used in industry is to fuse aluminum caps to the ends of carbon fibre tubes
- Glue a fibreglass cloth in between the aluminum and carbon fibre to prevent galvanic corrosion of the aluminum → how much of a concern is this?
- Cutting and drilling must be done using sharper tools (i.e. diamond drill bits)
- Consider molding the parts in-house, will need to cure → Waterloo might have the tools?
- Initial build with PVC, aluminum, or wood
- Next steps: interviewing Asha's coworker to ask about their experience implementing carbon fibre into design
- Typically include mounting points in the mold when creating a carbon fibre member
- Flexible drivetrain styles
- Goal: chassis stability, keep as level as possible
- Next steps: look into off-road vehicles & baja design (6wd?)
- Next steps: 4wd VS 6wd
- 6wd
- More stability, more contact VS more scrub, weight, complication
- Dig up 2019 drivetrain?? → documentation on google drive
- Contact Tony & Nathan for advice
- 6wd
- Drop test rover (sick flex??)
- Prototype tiny PLA replicas of the drivetrain design or with Lego (shit's rigid)
- Member types & implementation
- Ask Hamza for experience with carbon fibre while on Ryerson Rams
- Wheels
- Custom wheels → custom hubs → easier for mounting motors within wheels
- Otherwise, have to design within the constraints of COTS wheel hubs
- Compliant wheel internal design
- Hub shape less equation-based, more aesthetic + FEA justified
- Custom wheels → custom hubs → easier for mounting motors within wheels
- For next meeting (Sunday afternoon)...
- Come prepared with starting points for prototyping
- For most topics, look at the advantages and disadvantages for each method
- Look into mounting solutions for chassis (mechanisms to chassis, chassis to drivetrain)