Go to Post "Wow, smells like... physics" - Anna B. [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
  #16   Spotlight this post!  
Unread 10-03-2005, 16:42
Biff Biff is offline
Registered User
AKA: Tom Cooper
#1227 (Techno Gremlins)
Team Role: Mentor
 
Join Date: Jan 2004
Location: Grand Rapids MI
Posts: 214
Biff is a jewel in the roughBiff is a jewel in the roughBiff is a jewel in the roughBiff is a jewel in the rough
Re: Motors and gearboxes from the kit

Quote:
Originally Posted by Tom Bishop
Sprockets are a great place to loose weight. We put eight 1" holes in each of our 4 48 tooth drive sprockets and lost about a pound each. Sprockets are hardened steel, and will be difficult to drill without a press or a mill. It might be that a team has a mobile shop at the regional that you could use. We also lost about a pound by drilling out the side holes of the kitbot frame to 7/16". You can do that with a hand drill and some good arm strength! Watch out though, the hand drill will tend to "grab" and torque the drill around, possibly smashing fingers against the table top. We used a 6" hole saw to drill out the top plate where we put the Robot controller. Any solid pieces of metal are good candidates for holing.

What regional are you attending? Maybe a team with a mobile shop can let you know if they will be at your regional and can help with what is likely to be a lot of work and reassembly, as well as other teams that could help. Good luck and I hope things turn out well for you.
There should be a First supplied machine shop in a trailer at the regionals Ask the First people where it's located, sometimes it's in an adjacent loading dock, sometimes it's outside, kind of depends on the space.
  #17   Spotlight this post!  
Unread 10-03-2005, 17:24
Kam1310's Avatar
Kam1310 Kam1310 is offline
Registered User
#1310 (Runneymede Robotics)
Team Role: Student
 
Join Date: Mar 2005
Rookie Year: 2004
Location: Canada
Posts: 8
Kam1310 is an unknown quantity at this point
Re: Motors and gearboxes from the kit

We are attending the Greater Toronto Area Regional in Canada, one of the biggest. Our robot is 4 wheel drive and hour whhels are 2 1/2" this and 9" in diameter. We are not using any side plates and our robot base is made of extruded aluminum (don't really know the right spelling). Were planning on drilling holes in our arm which is 15 pounds it self. We haven't been to a regional yet but our team was wondering how much robot contact is there( any pushing or shoving).
  #18   Spotlight this post!  
Unread 10-03-2005, 17:26
Kam1310's Avatar
Kam1310 Kam1310 is offline
Registered User
#1310 (Runneymede Robotics)
Team Role: Student
 
Join Date: Mar 2005
Rookie Year: 2004
Location: Canada
Posts: 8
Kam1310 is an unknown quantity at this point
Re: Motors and gearboxes from the kit

Quote:
Our robot is 4 wheel drive and hour whhels are 2 1/2" this and 9" in diameter
I meant to say our robot is 4 wheel drive and the wheels are 2 1/2" thick and 9" in diameter
  #19   Spotlight this post!  
Unread 10-03-2005, 17:36
ahecht's Avatar
ahecht ahecht is offline
'Luzer'
AKA: Zan
no team
Team Role: Alumni
 
Join Date: Dec 2001
Rookie Year: 2002
Location: Billerica, MA
Posts: 978
ahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond reputeahecht has a reputation beyond repute
Send a message via ICQ to ahecht Send a message via AIM to ahecht Send a message via Yahoo to ahecht
Re: Motors and gearboxes from the kit

Be aware that one of the bearings in the kit transmission is held in by the two CIMs. If you remove a CIM, you will need to find some way to secure it.
__________________
Zan Hecht

Scorekeeper: '05 Championship DaVinci Field/'10 WPI Regional
Co-Founder: WPI-EBOT Educational Robotics Program
Alumnus: WPI/Mass Academy Team #190
Alumnus (and founder): Oakwood Robotics Team #992


"Life is an odd numbered problem the answer isn't in the back of the book." — Anonymous WPI Student

Last edited by ahecht : 11-03-2005 at 01:12.
  #20   Spotlight this post!  
Unread 10-03-2005, 20:58
jdiwnab's Avatar
jdiwnab jdiwnab is offline
Really the Inventor Guy
AKA: Bryan Hartley
FRC #0617
Team Role: College Student
 
Join Date: Nov 2004
Rookie Year: 2002
Location: Highland Springs, VA
Posts: 260
jdiwnab is a jewel in the roughjdiwnab is a jewel in the roughjdiwnab is a jewel in the rough
Re: Motors and gearboxes from the kit

Quote:
Originally Posted by ahecht
Be aware that one of the bearings in the kit transmission is held in my the two CIMs. If you remove a CIM, you will need to find some way to secure it.
What bearing would that be. We had to take apart our transmissions at the compition and, due to time, had to run on 1 motor each for a match. There is a bearing for each CIM. Then there is one for each side of the first driven gear shaft and then one for each side of the second driven gear shaft. If you remove a CIM, it can keep it's bearing, becuase it isn't needed (nothing moving there). Am I missing somthing?
__________________
Proof that Macs will win the platform war: How did Scotty know how to use MacDraft in Star Trek IV?
// random()
I have 100 gmail invites. PM me if you want one.
If they want us to think outside of the box, why do they make us fit in a 38x28x60 inch box?
Beware of Geeks bearing GIFs
Help me test my server software
  #21   Spotlight this post!  
Unread 10-03-2005, 21:20
Manoel's Avatar
Manoel Manoel is offline
Registered User
FRC #0383 (Brazilian Machine)
Team Role: Mentor
 
Join Date: Jun 2001
Rookie Year: 2000
Location: Porto Alegre, RS, Brazil
Posts: 608
Manoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond reputeManoel has a reputation beyond repute
Send a message via ICQ to Manoel Send a message via MSN to Manoel
Re: Motors and gearboxes from the kit

Quote:
Originally Posted by jdiwnab
What bearing would that be. We had to take apart our transmissions at the compition and, due to time, had to run on 1 motor each for a match. There is a bearing for each CIM. Then there is one for each side of the first driven gear shaft and then one for each side of the second driven gear shaft. If you remove a CIM, it can keep it's bearing, becuase it isn't needed (nothing moving there). Am I missing somthing?
First, there are no bearings for the CIMs (well, internally there are ). It's the one supporting the first shaft (with the 50 T and 14 T gears).
__________________
Manoel Flores da Cunha
Mentor
Brazilian Machine
Team # 383
  #22   Spotlight this post!  
Unread 10-03-2005, 22:26
Paul Copioli's Avatar Unsung FIRST Hero Woodie Flowers Award
Paul Copioli Paul Copioli is offline
President, VEX Robotics, Inc.
FRC #3310 (Black Hawk Robotics)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 2000
Location: Rockwall, TX
Posts: 1,393
Paul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond repute
Re: Motors and gearboxes from the kit

People,

Read the manual!! It is on the ifirobotics.com website. There is a section that clearly indicates what you must do if there is one motor. And yes, you must retain the bearings where the CIM motor is now removed. Holes are already located in the motor plate, you just have to buy some screws, nuts, and washers. Please read the manual, not doing so may be hazardous to your transmission.

Also, there should be no noise difference between one and two motors. If there is, than something else is wrong (probably didn't retain the bearings no longer held in by the removed CIM).

-Paul
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
Looking for Globes Motors... Joe Johnson Kit & Additional Hardware 1 20-02-2004 11:39
Trade - have Bosch gearboxes, need motors Andy Baker Motors 0 24-01-2003 08:32
Help picking motors Keith Chester Motors 10 21-12-2002 17:44
Globe Motors & other FIRST Suppliers at Design Show archiver 1999 2 23-06-2002 22:07
Drivetrain help thedillybar Technical Discussion 9 08-01-2002 21:54


All times are GMT -5. The time now is 03:29.

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