Williams scale GG1 not tracking well

Well, the lead truck and the rear truck are the same truck, ….does the condition still exist, or does it follow that particular truck when you flip the engine around and run it reverse first. Also look at both trucks and see what’s possibly different between the two,….look for silly things: bent axle, jammed up wheel, bent truck frame, missing parts, parts in the wrong order, missing hardware, etc, etc,….if still unsure, take a pic of the offending truck upside down, and we’ll have a looksy around…😁

Pat

I have one that I converted to TMCC command a number of years ago, I just popped it on the track and ran it around the mainline a few times in each direction.  The mainline has a curved switch, two double-slip switches, and a few standard switches, all Ross.  Ran in both directions without a hitch.  I'm all O72 or larger.  I've run this on O42 without issue, but I don't have anything like that now.

Check to see that trucks wheels are in proper alignment on each axle and see if each wheel itself is secure not sliding around on axle.

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I looked at the trucks while running without the shell on and it appears that the derailments occur when the problem truck is in the leading position.  But both trucks seem to have a lot of play.  Would a bigger spring help solve the problem? First two photos of problem truck and next two are of the ok truck.

Marty

That spring belongs on the top side of the pilot, not on the side you have it on.  That's likely what's lifting the trucks off the rails.

thanks John will give that a try tomorrow and see how it works.

Marty

Mine just made a bunch of laps around my layout with the springs in the correct place, no hint of any issue with derailments.

Sounds like winner, winner, chicken dinner!….problem might be solved!..

Pat

Thanks, guys, for your help.   Got the springs in the right place.  Runs much better forward then in reverse.  Just one curve with a problem.  But it is on a siding, and I can avoid it.

Marty

I don't have anything but O72 and larger, so I can't really see it currently run on smaller curves.  As I said, it once ran on O42, and AFAIK, I haven't changed anything since then, just built a new layout.

In any case, I'm glad you are running.

I agree with above posts that this locomotive will run on 042 curves without issue.  I used to run mine on 027 profile Lionel tubular track with 042 curves pulling Atlas 21" Horizon cars without issue.  The overhang was a bit much, but I was running trains in a small apartment at the time and didn't care.  It worked! 

Hopefully putting the spring in the right position solves your issue!