Which way is Clockwise on Van Door Motor?

Posted by Raul at 1/18/2001 9:06 AM EST

Engineer on team #111, Wildstang, from Rolling Meadows & Wheeling HS and Motorola.

The specs on the van door motor vary depending on whether it is operating in a CW or CCW direction. Does anyone know which way is coinsidered clockwise?

Raul

Posted by Mark Garver at 1/18/2001 4:01 PM EST

Student on team #68, Truck Town Terror, from Waterford Kettering/OSMTech Academy and General Motors Truck Group.

In Reply to: Which way is Clockwise on Van Door Motor?
Posted by Raul on 1/18/2001 9:06 AM EST:

It all depend on how you look at it! I am sorry you opened yourself up for that one.

: The specs on the van door motor vary depending on whether it is operating in a CW or CCW direction. Does anyone know which way is coinsidered clockwise?

: Raul

Posted by Joe Johnson at 1/18/2001 9:54 PM EST

Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

In Reply to: Re: Which way is Clockwise on Van Door Motor?
Posted by Mark Garver on 1/18/2001 4:01 PM EST:

My understanding of the definitions of clockwise and
counter clock wise is that it is when looking at the
face of the motor with the shafts pointing toward you.

As to why you care, this must be because you are tring
to get every last N-m of torque out of those motors and
had some freedom to design the motors to run one way of
the other.

If that is the case, I have some concerns about your
design, but Raul isn’t called “the Magnificent” for
nothing. I will defer to the master.

Joe J.

P.S. I think that the info FIRST has published is out
of date on those van door motors in any case FYI – as
I recall, they just re-ran the data from last year.
This is unfortunate because, after a lot of effort,
Robert Bosch has been convinced to donate the motors so
that Delphi did not have to buy them for FIRST from its
other power sliding door motor supplier, Taigene. In
any case, the specs on the Bosch and the Taigene motors
are similar but not identical. I will see what I can
do to find the print on that motor so that I can put
the better numbers up on this site. JJ

Posted by Raul at 1/21/2001 11:27 AM EST

Engineer on team #111, Wildstang, from Rolling Meadows & Wheeling HS and Motorola.

In Reply to: My understanding of CW and CCW…
Posted by Joe Johnson on 1/18/2001 9:54 PM EST:

Joe, you are the only one that calls me the magnificant one. I think you are the one that is the recognized “master” and mganificant one for all the great work you have done to get us some great components in the kit, not to mention your mentoring contributions to the FIRST community - I bow to thee!

Thanks and don’t worry Joe, I always try design with the proper amount of margin when it comes to the output power of the motors. I just ask because I am kind of picky about designing for the peak power and wanted to know precisely where that point is in each direction.

I know almost as much as you that optimizing speed and power is what can give your robot that little edge that it needs to last through many matches without failing.

Raul

: As to why you care, this must be because you are tring
: to get every last N-m of torque out of those motors and
: had some freedom to design the motors to run one way of
: the other.

: If that is the case, I have some concerns about your
: design, but Raul isn’t called “the Magnificent” for
: nothing. I will defer to the master.

: Joe J.

: P.S. I think that the info FIRST has published is out
: of date on those van door motors in any case FYI – as
: I recall, they just re-ran the data from last year.
: This is unfortunate because, after a lot of effort,
: Robert Bosch has been convinced to donate the motors so
: that Delphi did not have to buy them for FIRST from its
: other power sliding door motor supplier, Taigene. In
: any case, the specs on the Bosch and the Taigene motors
: are similar but not identical. I will see what I can
: do to find the print on that motor so that I can put
: the better numbers up on this site. JJ