Go Back   RCCrawler Forums > RCCrawler General Tech > Electronics
Loading

Notices

Thread: Two brand new 60t Atlas sound and run very differently...any advice ?

Reply
 
LinkBack Thread Tools Display Modes
Old 03-12-2008, 01:13 PM   #1
RCC Addict
 
Join Date: Jan 2008
Location: www.rccrawler.com
Posts: 1,113
Question Two brand new 60t Atlas sound and run very differently...any advice ?

I noticed that the two 60t motors are quite different to each other ,one
sounds strong and about the same pitch going backward as forward but the second
one sounds like its really struggling when in reverse and forward it sounds crappy and gutless .
...could there be something wrong with this motor or is it normal for low
RPM motors to sound very different to each other?

Last edited by TheHeadHunter; 03-12-2008 at 01:15 PM.
TheHeadHunter is offline   Reply With Quote
Sponsored Links
Old 03-12-2008, 01:23 PM   #2
Rock Crawler
 
Join Date: Dec 2005
Location: West Omaha
Posts: 581
Default

Check the brushes, make sure they are not hung up or cocked to one side. Also compare the two. Maybe one of them has the timing off.
CrawlinClodKiller is offline   Reply With Quote
Old 03-12-2008, 01:23 PM   #3
Pebble Pounder
 
Join Date: Mar 2006
Location: portland
Posts: 138
Default

Id pull the "weak" motor apart and check for bad bearings or bushings. Make sure there is nothing in the can that shouldnt be there, (leftovers from the manufacturing process) and then lube it up real well. Also inspect the windings / com for anything that might be suspect. Maybe a cracked wire, pitted com surface, anything. Look at the brushes for pits, or anything weird. Assemble it with 0deg timing. Then if its all good, do the same to the other. If nothing looks out of place, id say run them. If the "weak" motor isnt performing like the other, call the company. Maybe a can magnet lost some magnetism, or didnt get fully magnetised. If they are new, they should return / replace it for free.

Ive had a motor with a dead magnet, and it sounded familiar to what you are describing. In an old racing Clod i had running 2 Trinity D3 10ts. I let the truck sit for a long time and when i fired it back up, the front motor seemed to have 300% power over the rear. I tore down the motor, and the rear motor felt very smooth to turn while assembled, instead of the noticible steps like the front. I sent it back to Trinity and they sent me a pair of new D4 cans, since the D3 cans werent around anymore.
Dumptruck is offline   Reply With Quote
Old 03-12-2008, 01:28 PM   #4
RCC Addict
 
Join Date: Jan 2008
Location: www.rccrawler.com
Posts: 1,113
Default

Quote:
Originally Posted by Dumptruck View Post
Id pull the "weak" motor apart and check for bad bearings or bushings. Make sure there is nothing in the can that shouldnt be there, (leftovers from the manufacturing process) and then lube it up real well. Also inspect the windings / com for anything that might be suspect. Maybe a cracked wire, pitted com surface, anything. Look at the brushes for pits, or anything weird. Assemble it with 0deg timing. Then if its all good, do the same to the other. If nothing looks out of place, id say run them. If the "weak" motor isnt performing like the other, call the company. Maybe a can magnet lost some magnetism, or didnt get fully magnetised. If they are new, they should return / replace it for free.

Ive had a motor with a dead magnet, and it sounded familiar to what you are describing. In an old racing Clod i had running 2 Trinity D3 10ts. I let the truck sit for a long time and when i fired it back up, the front motor seemed to have 300% power over the rear. I tore down the motor, and the rear motor felt very smooth to turn while assembled, instead of the noticible steps like the front. I sent it back to Trinity and they sent me a pair of new D4 cans, since the D3 cans werent around anymore.
I am a newbie though and I am worried about opening the motor ...its brand new ...I maybe better off to do it through my LHS?
TheHeadHunter is offline   Reply With Quote
Old 03-12-2008, 02:16 PM   #5
RCC Addict
 
Join Date: Jan 2008
Location: www.rccrawler.com
Posts: 1,113
Default

Quote:
Originally Posted by CrawlinClodKiller View Post
Check the brushes, make sure they are not hung up or cocked to one side. Also compare the two. Maybe one of them has the timing off.
thanks guys I did this and it may have changed something I think
we will see soon when this crawler is all done(shortly)
TheHeadHunter is offline   Reply With Quote
Reply



Thread Tools
Display Modes

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 02:38 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com