Go to Post You are certainly welcome to demonstrate your geekiness on a regular basis! :) - Cynette [more]
Home
Go Back   Chief Delphi > Technical > Motors
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
 
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 31-03-2009, 12:15
Richard Wallace's Avatar
Richard Wallace Richard Wallace is offline
I live for the details.
FRC #3620 (Average Joes)
Team Role: Engineer
 
Join Date: Jan 2003
Rookie Year: 1996
Location: Southwestern Michigan
Posts: 3,674
Richard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond repute
Re: Globe Motor Durability Versus RS-545

Quote:
Originally Posted by squirrel View Post
We've never been able to find an application for the Globe motor, with our limited machining ability. Now that AndyMark sells shaft adapters, its more likely we could use it sometime...
Thanks to Jabba the Hutt, we didn't need to wait for AndyMark to offer a solution. However, the AM part is more versatile.

Seriously, I have never seen a Globe fail. Smoke, yes; fail, no. We've used them in stock condition, with threads cut on the shaft-stub, and with one gearing stage removed.

I even tried to get the team to use one for extreme torque by chaining it to a rachet, but they haven't found a mechanism that can use that solution (yet).
__________________
Richard Wallace

Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
  #2   Spotlight this post!  
Unread 31-03-2009, 16:29
Adam Freeman's Avatar
Adam Freeman Adam Freeman is offline
Forever HOT!
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: Jan 2007
Rookie Year: 2005
Location: Rockwall, TX
Posts: 497
Adam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond reputeAdam Freeman has a reputation beyond repute
Re: Globe Motor Durability Versus RS-545

67 modified a globe gearbox to speed up our conveyor system that feeds the "shooter". In this modified condition, the globe did not have enough torque to overcome our drivers aggression to load many balls into the conveyor quickly. The motor would become stalled and the drivers would have to reverse it to correct the issue. The globe motor never burned up even though it was stalled many times during practices.

We then replaced the globe with a RS-545 and a P60 64:1 gearbox. We competed at Cass Tech, then went to Lansing and lost a RS-545 during practice on Thursday b/c we stalled it out trying to pickup to many balls. We replaced the motor, competed at Lansing, then went to Troy and lost the RS-545 when we tried to pickup to many balls. We replaced it again and competed at Troy without issue.

The morale of the story is to not stall the RS-545 or you will be replacing it. Luckily, we have failed these motors at opportune times so far. I am sure we will lose another one before we are done with this robot. Odds are, sometime on Thursday at MSC.

We realize that we are asking this motor to do a little more than it is capable of, and we may burn it up if exercised too aggresively. Given the cost ($6/motor) and weight we are comfortable with the risk we are taking.

The P60 gearbox though is top notch! Light weight and compact.
__________________

2005 FIRST World Champions (330, 67, 503)
2009 FIRST World Champions (111, 67, 971)
2010 FIRST World Champions (294, 67, 177)
  #3   Spotlight this post!  
Unread 31-03-2009, 16:44
HighLife's Avatar
HighLife HighLife is offline
Mentor
FRC #0245 (Adambots)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 2006
Location: Rochester Hills, MI
Posts: 74
HighLife will become famous soon enough
Send a message via AIM to HighLife
Re: Globe Motor Durability Versus RS-545

Last year we used two Globes to drive down 250+ pounds of spring force for our ball shooter. We stalled them a lot while we were building the shooting mechanism, but I don't remember replacing them.

If your looking for reliability: Globe.
__________________
AdamBots.com- Winner of 7 Best Website Awards!
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Globe Motor RMS11 Motors 7 01-07-2008 20:36
globe motor chrisinmd Motors 9 11-02-2006 10:58
Globe Motor archiver 2001 0 24-06-2002 03:09
Globe Motor archiver 2000 4 24-06-2002 00:15
Globe Motor archiver 2000 0 24-06-2002 00:15


All times are GMT -5. The time now is 15:19.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi