OCCRA
Go to Post When I first read this comic, I thought "Awww, how cute!". But then, thoughts of Karthik singing J. Lo's "Love Don't Cost a Thing" started running around through my head, and everything changed. - Travis Hoffman [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media  
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 02-03-2005, 09:10 PM
slickguy2007 slickguy2007 is offline
Copioli is the man!!!
FRC #1403 (Cougar Robotics)
Team Role: Alumni
 
Join Date: Nov 2004
Rookie Year: 1997
Location: Skillman, NJ
Posts: 545
slickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond repute
Send a message via AIM to slickguy2007
Kit drive train question

I am building the rookie drive train and I am having problems. I have all the pieces and I am 100% sure that I am hooking it up correctly. But I am still getting some weird noises from the drive train. I think it sounds like some things are scraping up against each other. Does anyone have any suggestions as to what I should try? Am I missing something? If this question has already been asked I apologize, I am really tired after having spent numerous hours trying to figure this out.... Thanks for any help that you have to offer!

GO 1403!!!
  #2   Spotlight this post!  
Unread 02-03-2005, 09:13 PM
Kyle's Avatar
Kyle Kyle is offline
Mike Wade, RIP You will be missed
AKA: Kyle Rice
FRC #0365 (MOE)
Team Role: Alumni
 
Join Date: Jan 2003
Rookie Year: 2002
Location: Wilmington, Delaware
Posts: 1,387
Kyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond reputeKyle has a reputation beyond repute
Send a message via AIM to Kyle
Re: Question

What motors are you using and how are they set up? Is the sound a metal on metal scraping sound?
__________________
2007 Championship Chairmans!!!!! 8 years in the making GO MOE!


Facebook
  #3   Spotlight this post!  
Unread 02-03-2005, 09:14 PM
Alex Cormier's Avatar
Alex Cormier Alex Cormier is offline
yupp...
AKA: Grizz, Twinkletoes, PitBull1126
no team
Team Role: Team Spirit / Cheering
 
Join Date: Jan 2003
Rookie Year: 2003
Location: Rochester, NY
Posts: 5,612
Alex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond reputeAlex Cormier has a reputation beyond repute
Re: Question

i believe it was in team update 4 or 5 maybe 6. it states that the tranny will be noisy. all you have to do is grease em up really good a few times. if that doesn't work reply to this and we'll try to figure something else out. good luck.
  #4   Spotlight this post!  
Unread 02-03-2005, 09:19 PM
Arefin Bari's Avatar
Arefin Bari Arefin Bari is offline
Registered User
AKA: Ari
FRC #0108 (SigmaC@T)
Team Role: Engineer
 
Join Date: Mar 2003
Rookie Year: 2001
Location: Ft. lauderdale, FL
Posts: 3,261
Arefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond reputeArefin Bari has a reputation beyond repute
Send a message via ICQ to Arefin Bari Send a message via AIM to Arefin Bari Send a message via MSN to Arefin Bari Send a message via Yahoo to Arefin Bari
Re: Question

Quote:
Originally Posted by Kyle
What motors are you using and how are they set up? Is the sound a metal on metal scraping sound?
He pointed out the "rookie drive train". Assuming you are using both CIM motors, Make sure the setscrews on the gears are grinded down and loctited. Moreover, Use lubrication (Lithium-based grease) on the gears. That should make it run much smoother. If you have done all of the above that I just pointed out, inspect how you are lining up each gears. Please do keep in mind, that it wont run VERY smoothly, its a transmission, it is going to make a little bit of noise.

<Edit>

Thanks Alex for pointing out that it was discussed in one of the updates. It's update 4, and its on page 5.

Update- When assembling the transmissions, please reference the Tips on page 2-5 of the Transmission Manual. Most importantly, ensure that all the setscrews are secured wtih Locktite threadlocker and that the internal gears are lubricated with a lithium-based grease.


-Arefin.

Last edited by Arefin Bari : 02-03-2005 at 09:23 PM.
  #5   Spotlight this post!  
Unread 02-03-2005, 09:19 PM
slickguy2007 slickguy2007 is offline
Copioli is the man!!!
FRC #1403 (Cougar Robotics)
Team Role: Alumni
 
Join Date: Nov 2004
Rookie Year: 1997
Location: Skillman, NJ
Posts: 545
slickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond reputeslickguy2007 has a reputation beyond repute
Send a message via AIM to slickguy2007
Re: Question

Thanks guys I appreciate the help. Yea it sounds like it is metal scraping up against metal. I know the drive trains are noisy this year. We have one gear box working fine, but we are not noticing any weird scraping sounds. We are using 4 cims, 2 on each gearbox. We have greased it up at several different amount levels , but we still seem to have the same problem.


GO 1403!!!
  #6   Spotlight this post!  
Unread 02-03-2005, 09:50 PM
zc923's Avatar
zc923 zc923 is offline
Alumni and College Mentor
AKA: Zubair Chaudary
FRC #1403 (Cougar Robotics)
Team Role: College Student
 
Join Date: Feb 2005
Rookie Year: 2005
Location: NJ
Posts: 24
zc923 has a spectacular aura aboutzc923 has a spectacular aura aboutzc923 has a spectacular aura about
Send a message via AIM to zc923
Re: Kit drive train question

Before I go on, I should mention that I was apart of the building of the gearboxes for 1403.

While building the gearboxes, we had our fair share of trouble, but lets not go into that.

Currently, our problem is that when one of the gearboxes is active, it makes a clicking noise, which gets louder and louder in respect to the speed. The frequency of the noise is one per revolution. Its more of metallic click noise, but that doesn't describe completely.

When ran a series of trouble shooting things, and we have ruled out the sprocket, the motors, and the ball bearings. Upon closer examination, I noticed that the one of the setscrews had been grind-ed down, leaving it shiny. Yes, I did use the new setscrews, and they were shortened to sit flush. When I saw this, I looked at the gear that runs closest to the setscrews, and sure enough, it had chipped a few teeth.

But here is the strange part, once we remove that particular gear (this is the gear that is connected to the camshaft), the noise becomes louder.

Another curve ball, if only one motor is geared to it, the gearbox makes the noise of a beat-box.

I am positive that is was built correctly, because the other one works just fine.

Help is greatly appreciated.

P.S., is the setscrew strong enough to break/chip the teeth of a gear?

Last edited by zc923 : 02-03-2005 at 09:54 PM.
  #7   Spotlight this post!  
Unread 02-03-2005, 10:12 PM
rswsmay's Avatar
rswsmay rswsmay is offline
Registered User
AKA: Robert
FRC #1177 (Mecha-Jags)
Team Role: Engineer
 
Join Date: Jan 2004
Rookie Year: 2002
Location: Lithonia
Posts: 60
rswsmay is a jewel in the roughrswsmay is a jewel in the roughrswsmay is a jewel in the roughrswsmay is a jewel in the rough
Re: Question

We had that problem and identified the cause and solution almost the same day FIRST posted an update with a proposed fix in update 4. You will want to take apart the gear boxes and and look at the final output gear. You may notice that one or both of the retainer rings is inteferring with the final output gear. Our solution was to:

1. remove the retainer rings
2. use the 3 nylon washers
3. use the smaller set screws provided separately
4. apply loctite thread locker.
5. apply grease to the gears and run them for 30 mins forward and reverse
6. disassemble, wipe down the grease and reapply
7. reassemble the gear box

It cleared our problem right up.


Quote:
Originally Posted by slickguy2007
Thanks guys I appreciate the help. Yea it sounds like it is metal scraping up against metal. I know the drive trains are noisy this year. We have one gear box working fine, but we are not noticing any weird scraping sounds. We are using 4 cims, 2 on each gearbox. We have greased it up at several different amount levels , but we still seem to have the same problem.


GO 1403!!!
__________________
Knowledge is only strength.... Knowledge and Wisdom, thats true power.
  #8   Spotlight this post!  
Unread 02-03-2005, 10:20 PM
zc923's Avatar
zc923 zc923 is offline
Alumni and College Mentor
AKA: Zubair Chaudary
FRC #1403 (Cougar Robotics)
Team Role: College Student
 
Join Date: Feb 2005
Rookie Year: 2005
Location: NJ
Posts: 24
zc923 has a spectacular aura aboutzc923 has a spectacular aura aboutzc923 has a spectacular aura about
Send a message via AIM to zc923
Re: Kit drive train question

Now that you mentioned it, I do think the lock retainer rings did interfere with the shaft. Have to look into that as well. Thanks.
__________________
"I look at the world and I notice it's turning...
...With every mistake we must surely be learning."
-While My Guitar Gently Weeps
  #9   Spotlight this post!  
Unread 02-03-2005, 10:25 PM
Gdeaver Gdeaver is offline
Registered User
FRC #1640
Team Role: Mentor
 
Join Date: Mar 2004
Rookie Year: 2001
Location: West Chester, Pa.
Posts: 1,465
Gdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond repute
Re: Kit drive train question

Even with the short set screws, we had to grind down the edges of the set screw. Thats how close the gear is. We only ran the gear box for 20 seconds. That gear box is very loud, but doesn't appear that the efficiency has been affected. We also had to glue the bearing to keep them from rotating in the aluminum.
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
pic: team696 teaser of the Drive Train. xKLzKobE08x Extra Discussion 16 01-30-2005 10:59 PM
Coolest Drive Train team222badbrad General Forum 15 09-01-2004 07:06 PM
Four Wheel, all steering, non-omniwheel, ONE power/motor source drive FizMan Technical Discussion 31 04-27-2004 12:12 PM
pic: Team 11's Drive train CD47-Bot Robot Showcase 4 03-07-2004 09:40 PM
"Motors and Drive train edition" of Fresh From the Forum Ken Leung CD Forum Support 6 01-29-2002 12:32 PM


All times are GMT -5. The time now is 04:15 PM.

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


Powered by vBulletin®
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi