Re: [EVDL] co-efficent of drag
how do you figure co-efficient of drag after I put fender skirts' front and rear ; smooth skinned the bottom for aerodynamics ' and found a way to reduce the drag from the vacuum in the rear between the tail lights ?
----- Original Message -----
From: Jeff Shanab<mailto:[email protected]>
To: [email protected]<mailto:[email protected]>
Sent: Sunday, August 12, 2007 3:29 PM
Subject: Re: [EVDL] Roll-down test to determine rolling and aero coefficients
Thanks. My rig is so inefficient I really need to look closely at this
and give it a try. The first question I have is if the relation ship is
linear enough to use rolling to a stop as a point. Maybe slowing to
5,10,15,20 mph would give a better indication of the rolling
resistance?. It seems when I push a car that it takes more force to get
it rolling that to keep it rolling. like static and dynamic coefficients
of friction.
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how do you figure co-efficient of drag after I put fender skirts' front and rear ; smooth skinned the bottom for aerodynamics ' and found a way to reduce the drag from the vacuum in the rear between the tail lights ?
----- Original Message -----
From: Jeff Shanab<mailto:[email protected]>
To: [email protected]<mailto:[email protected]>
Sent: Sunday, August 12, 2007 3:29 PM
Subject: Re: [EVDL] Roll-down test to determine rolling and aero coefficients
Thanks. My rig is so inefficient I really need to look closely at this
and give it a try. The first question I have is if the relation ship is
linear enough to use rolling to a stop as a point. Maybe slowing to
5,10,15,20 mph would give a better indication of the rolling
resistance?. It seems when I push a car that it takes more force to get
it rolling that to keep it rolling. like static and dynamic coefficients
of friction.
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev<http://lists.sjsu.edu/mailman/listinfo/ev>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev