156B Week 8
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
The stator O-ring seal screw at the bottom most of the reservoir was colliding with the bike mount being used. This was changed and fixed by offsetting this screw a little bit. The fill port at the top of the reservoir was also used to moved so that in mounted orientation, it is as parallel to the ground as possible. During assembly, we found that the water would not sit flush at the top and this caused the top most coil to be exposed to some air. To fix this we plan on gluing a reservoir above that curved surface oppening to have a little reservoir up top that can be topped off.
Accomplishments from Previous Week
Test fit and assembled all 3D-printed pieces, made an O-ring, and tested the effectiveness of the O-ring seal. (Bijan, Kiernan, Kenan)
Adjusted CAD for the design changes mentioned in the overview section and also designed a stator piece without coil insert holes to test the water tight seal more easily before we receive the coils from our sponsor (Nick)
Re-printed all pieces of the stator with the corrections added (Kiernan)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Test O-ring seal on new assembly to ensure it is water-tight (Bijan, Kiernan, Kenan)
CAD the fill reservoir that will be glued on top of the stator fill port, begin engineering drawings (Nick)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Sponsor told us Saturday that he has one finished coil and what we need for the electronic speed controller.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
5/11 in person -
Can use RTV silicon sealant in case it's needed for the O-ring
We are considering using this for only the bottom part of the O-ring seal if it starts leaking there and per your suggestions for that idea.
If sponsor does not follow through with coils, use whatever you can possibly make
Ok, it's possible but it will not be representative of our analyses or desired product
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
O-ring seal leaking now since spacing of seal-screws was increased for the bottom most part of the stator with the most fluid pressure on it.
Stator fill port and new stator fill port reservoir glue connection leaking too much and exposing top coil to water too quickly or before we can get a test in.
Resources or Information Required but not Available
Drill press with large enough chuck to fit 1-inch NTP pipe tap.
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
Total Budget
$5,000
Spent
$3.00, fluid plug
$50, PETG
$28.00, 1-1/4 pipe tap
~$200, Assembly hardware
Remaining
$4,719
Progress on Report and Webpage
Added a lot of sections and pictures/graphs from our powerpoints and previous analysis into the report.