LGB-2-6-0 motor problem - Page 4 - myLargescale.com > Community > Forums

Reply
 
LinkBack Thread Tools
Old 02-24-2018, 11:47 AM   #31 (permalink)
Super Modulator
 
Greg Elmassian's Avatar
 
Join Date: Jan 2008
Posts: 20,419
Default

Dan do you have a picture illustrating this, I think I get what you are saying, the long shaft deflects enough to the side to hit a different gear. which way the shaft deflects clearly is different depending on motor direction.

Is that it?

Greg
__________________
Be sure to visit my site, lots of technical tips & modifications, and a functional search.



Click here for Greg's web site

Note: Please. no private messaging, use regular email: [email protected]
Greg Elmassian is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-28-2018, 02:40 PM   #32 (permalink)
Senior Member
 
Join Date: Jan 2008
Location: South Eastern MA, USA
Posts: 3,865
Send a message via Yahoo to Dan Pierce
Default

Greg, the Mogul motor drives an idler gear and the idler drives the axle gear.
The idler gear can shift a little but the wear on the motor end shaft will cause it to move a lot and catch the side of the idler.
Also the front axle has a lot of side play and can catch on the side of the idler. Sound moguls do not have this issue in the rear axle due to the added parts for chuff sensing, very limited side play, but non sound moguls will have rear axle side play.
So, it is very important to have Mogul axle gears centered, and I add a washer to the idler shaft to limit side play on it.
Dan Pierce is offline   Reply With Quote Quick reply to this message
Old 02-28-2018, 03:48 PM   #33 (permalink)
Super Modulator
 
Greg Elmassian's Avatar
 
Join Date: Jan 2008
Posts: 20,419
Default

Thanks Dan, that's a great explanation. I quoted you on my site, since it's not really obvious at first.

Greg - 159
__________________
Be sure to visit my site, lots of technical tips & modifications, and a functional search.



Click here for Greg's web site

Note: Please. no private messaging, use regular email: [email protected]
Greg Elmassian is offline   Reply With Quote Quick reply to this message
 
Old 03-07-2018, 11:10 AM   #34 (permalink)
Member
 
Join Date: May 2013
Location: Las Vegas
Posts: 67
Default

Hello all. When I tested the motor the first time out of the loco it seemed to work fine, that is what led me to believe the board might be bad. After letting it sit for months i decided to give it another look. when I tested the motor at different voltages it became apparent that is was running very erratic and not smoothly at all. Lower voltages it wouldn't turn at all, then suddenly take off as voltage increased. Replacing the motor solved the issues. Honestly, i am not sure if its the brushes or not, I have never figured out how to remove and inspect them without destroying the motor. Thanks to all that responded. I did not notice a lot of side play in the shaft which can also cause multiple running issues. Bill

Last edited by rntfrmme; 03-07-2018 at 11:11 AM. Reason: added a note
rntfrmme is offline   Reply With Quote Quick reply to this message
Old 03-07-2018, 11:56 AM   #35 (permalink)
Super Modulator
 
Greg Elmassian's Avatar
 
Join Date: Jan 2008
Posts: 20,419
Default

Thanks Bill, this thread will serve to help others as well as myself.

Regards, Greg
__________________
Be sure to visit my site, lots of technical tips & modifications, and a functional search.



Click here for Greg's web site

Note: Please. no private messaging, use regular email: [email protected]
Greg Elmassian is offline   Reply With Quote Quick reply to this message
Old 03-09-2018, 04:15 AM   #36 (permalink)
Member
 
Join Date: Nov 2015
Location: North Carolina
Posts: 35
Default

Quote:
Originally Posted by rntfrmme View Post
...Replacing the motor solved the issues. Honestly, i am not sure if its the brushes or not, I have never figured out how to remove and inspect them without destroying the motor. Thanks to all that responded. I did not notice a lot of side play in the shaft which can also cause multiple running issues. Bill
I had similar symptoms with a first gen LGB 2080D engine. It ran fine in reverse, took a lot of volts and a nudge to get it moving forward.

I found directions for taking the motor apart here:
https://www.gscalecentral.net/thread...ervice.163076/
and here:
https://www.gscalecentral.net/thread...-testing.1237/

My problem ended up being that the motor brushes were frozen and the commutator very dirty. Ours was the older style motor so the brush holder assembly was pretty easy to take out.
__________________
Sophie B
Dismal Creek Railroad
SophieB is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the myLargescale.com > Community > Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
LGB MOTOR 1toppump Beginner's Forum 10 01-12-2020 11:17 PM
LGB Mallet motor riderdan Rolling Stock 7 07-28-2014 05:45 AM
Need LGB parts (motor especially) scoobster28 Model Making 4 11-29-2011 09:42 AM
One motor on Dual Motor LGB trains siezing up bcwa Public Forum 11 02-14-2009 09:13 AM
Help with DC motor problem? lownote Rolling Stock 10 07-10-2008 06:33 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 08:32 PM.



Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.