It is currently Sun Nov 19, 2017 6:43 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: Allowable Wheel Size Difference - EMD Early GP Locomotives
PostPosted: Sat Sep 03, 2016 8:32 pm 
User avatar

Joined: Sat Jul 02, 2005 7:16 am
Posts: 1377
From a question recently received, the recommended allowable wheel size difference on EMD GP type locomotives built up to the early 1970's is:

Wheels on same axle: 1 Tape
Wheels on same truck: 20 Tapes (3/8 inch radius)
Wheels on same locomotive: 32 Tapes (5/8 inch radius)

The reason for these recommended limits is to keep from triggering false wheelslip indications, within the normal operating speed range of the locomotive, due to Wheel Slip System being activated by wheel size differences. This information is generally not shown in the operators manuals and there were no complete locomotive service manuals (LSM) prior to the 1966 product line. The references for this information are EMD Pointers dated 1 June 1971, with corrections in EMD Pointers dated 12 July 1971.

This information tends to be difficult to locate unless you have one of the early 1970's EMD Pointers Article index sheets, thus I am posting it here for general information, both the limits and the specific reference.

PC

_________________
Advice from the multitude costs nothing and is often worth just that. (EMD-1945)


Offline
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 5 hours [ DST ]


 Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 29 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: