Compare Model 3, BMW i3, and Model Y

[bwilson4web]

I'm using the BMW i3-BEV for metrics as we have a BMW i3-REx:

I own a 2019 Model 3 and a 2014 BMW i3-REx, using BEV version for metrics:

• Model 3 - Need to get roll-down metrics to determine if it was drag reduction. If drag reduction, it would be rolling resistance which we can tune.
• BMW i3 - I've got some aerodynamic tuning tricks. Measure the aero flow behind the car and wheel wells. Then use cardboard frames and clear plastic sheet to test aero tuning.
• Both - Apply lesson's learned and make 'kits'.

Bob Wilson

 

[derekgates]

Nice! This looks like a fun project.

Would it be useful to look up cd/m for the rated drag efficiency?

 

[bwilson4web]

. . .
Would it be useful to look up cd/m for the rated drag efficiency?

Not as much as making sure I have a reproducible benchmark and metrics on the airflow.

Bob Wilson