Duke University Motorsports is a student group that designs and builds open wheel, single seat race cars to compete in the Formula SAE competition sponsored by the Society of Automotive Engineers. The team consists of Duke students from both Pratt and Trinity, in all classes. The purpose of the team is to provide students with a way to gain practical design and manufacturing experience in a fun and challenging setting.

Wednesday, March 21, 2012

Fixing the Drivetrain

So we had a few problems with the drivetrain at NCCAR, which were fixed over the week.  The combination of the relatively large half-shaft angle, improperly sized half-shafts (too short), and tripod housing that were not deep enough caused the drivetrain to fail.
To fix this, we made new (deeper) tripod housings, JP made a new half shaft, and we re-aligned the drivetrain (properly this time).

The new tripod housings have a lip built in for the boot.

 In addition, we had a lot of trouble aligning the drivetrain.  There was a lot of movement of the bearing carriers due to the misalignment, so we had to unpress things, make spacers, mill down a diff cap, and eventually everything aligned well enough.

After driving yesterday, the drivetrain seems fine.  Nothing broke, so I think we're good to go.

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