Hi there; I am going to do my best to summarize what I have been working on over the summer and this fall; admittedly, I should have made earlier posts, so this is going to be somewhat of a long braindump:
Phase 1: Summer Planning and Drivetrain Redesign Version 1
Over the summer, I put in significant hours (a) learning Computer Aided Machining and (b) redesigning the drivetrain. I am leading both the Drivetrain and WHUBS teams this year, so I needed to put in some serious hours so that I could hit the ground running this fall.
The Drivetrain (and the accompanying rear portion of the frame/suspension) is the part of the car that is undergoing the most changes this year, mostly because it was the most problematic part of the car last year. The main issues that version 1 of my redesign sought to address were:
- Last year, we ran too sharp of an angle from the halfshafts to inner tripod housings, so there was significant friction and we actually had the halfshafts pop out of the tripod housings.
- Last year, we tried to go to a rigid mounting system (no more turnbuckle) for the bearing carriers, but this had unintended consequences when vibrations created a noticeable side-to-side wobble of the drivetrain when we started turning the chain.
- Last year, the bottom of the left and right bearing carriers were mounted at different locations (so they weren't coaxial, so adjustment (which involved the use of shims) would cause misalignment.
- There were also some little things within the design (I won't list them all) that I updated/improved to make our CAD model of the drivetrain better.
We hosted an E-Social on November 9th, which was a great success. We brought the car up to the main engineering quad and purchased a bunch of pizza to share outside on a beautiful afternoon in North Carolina. We had a lot of great conversations with interested students about Duke Motorsports, and made sure to rev it a few times before we left. Thanks to ESG and all those who helped, it was a great success!.
