Thread: HOT drill motors
View Single Post
  #2   Spotlight this post!  
Unread 23-06-2002, 23:09
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
Re: HOT drill motors
Posted by Michael Betts.

Engineer on team #177, Bobcat Robotics, from South Windsor High School and International Fuel Cells.

Posted on 2/14/2000 4:52 PM MST


In Reply to: HOT drill motors posted by nuts4first on 2/14/2000 3:54 PM MST:



I don't have an absolute answer. My experience tells me that you may be in trouble. I have a lot of respect for what these motors can do and we have all pushed the envelope from time to time.

But... If you are hot to the touch with just 130 lbs in 5 mins, you will be really cooking after 2 minutes of hard accelerations, pushing and shoving.

1. Removing the side loads is a must. Your second pillow block is a heavy but good idea.
2. Take a hard look at sources of friction in your system.
3. Consider backing off on your gear ratio. Since it sounds like you are a direct drive, smaller diameter wheels.
4. There is a 12V muffin fan in the kit. You can make a wind tunnel.

Remember that you may only have a minute between rounds... Not much time to cool off.

Last thought. If your motors are getting hot, you are probably border line for tripping your circuit breakers. Once they start tripping, your problems grow by an order of magnitude. The CBs are thermal devices. They reset but don't really cool off for a while. Once tripped, it does not take much effort to trip them again and again.

Good Luck!

Mike


__________________
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.