Thread: Drill Motors and HEAT!
View Single Post
  #4   Spotlight this post!  
Unread 24-06-2002, 00:02
archiver archiver is offline
Forum Archival System
#0047 (ChiefDelphi)
  
Join Date: May 2001
Location: Pontiac, MI
Posts: 21,214
archiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond repute
differences in friction still seems more likely...
Posted by Joe Johnson at 2/3/2001 4:52 PM EST


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


In Reply to: Re: Drill Motors and HEAT!REASON.....
Posted by nick237 on 2/2/2001 11:10 PM EST:



It is possible that the fans are more effective in one
direction than another (though I have never seen a
Johnson Electric or Mabuchi spec that mentions this),
but I still think that it is much more likely that
differences in friction between the two drive trains is
the culprit.

I know of a lot of teams that spend a lot of time
worrying about the differences between the Johnson
Electric motor (a.k.a. the Bosch drill motors) when run
clockwise vs. counter clockwise.

In my opinion this is mostly wasted effort. I can tell
you honestly that we have never worried about such
small variations in light of the much larger variations
we expect from the typical drive systems that FIRST
teams make. Many teams spend a lot of time trying to
compensate for this small difference instead of looking
for more important sources of varying output.

But then again, what do I know?

Joe J.



__________________
This message was archived from an earlier forum system. Some information may have been left out. Start new discussion in the current forums, and refer back to these threads when necessary.