LGB 2044 wheels rub on cylinders

[fairflixt]

Hi everyone,

I recently came into possession of an analog, bright orange 2044. While running it, it noticeably slows on curved track. It's much more than other locos of similar size. At first I thought it might be the different wheel configuration or the large wheels. And while this might be true, after oiling axels and inspecting all manner of things I finally saw that the front wheels, are getting pushed into and rubbing on the cylinders on curved track. I couldn't find a thread discussing this and was wondering if the forum has a clever fix for preventing?

Thanks, as always,
Vince

 

[dunnyrail]

I presume you mean the RHB Electric Locomotive with the bogie wheels rubbing on the Air Cylinders? If so there could be something that is out of place on those Air Cylinders. Have you tried removing them, simple screw fit if I remember correct.

 

[fairflixt]

I presume you mean the RHB Electric Locomotive with the bogie wheels rubbing on the Air Cylinders? If so there could be something that is out of place on those Air Cylinders. Have you tried removing them, simple screw fit if I remember correct.

I do! It must be well known... I really did try to find a previous thread covering the topic! I was trying to upload a photo but it wasn't working on mobile so will do that later. I have not tried to remove them as I was hoping to stay true to the original look. But it's definitely worth trying just to diagnose the problem. At first blush, nothing looked wrong with the cylinders. I'll try and report back.

 

[Fezwig]

Just to confirm, what radius curve are you using?

 

[fairflixt]

Just to confirm, what radius curve are you using?

This occurred to me too. I have R1-R3 and felt I could tell for all of them. But your comment is a good push to set up a more rigorous test to see if thats actually the case. Perhaps the rubbing is only on smaller radii. When I get a chance to do that I will report back.

 

[fairflixt]

I presume you mean the RHB Electric Locomotive with the bogie wheels rubbing on the Air Cylinders? If so there could be something that is out of place on those Air Cylinders. Have you tried removing them, simple screw fit if I remember correct.

Turns out a screw isn't even involved, the cylinders just pop out!

 

[Rhinochugger]

This occurred to me too. I have R1-R3 and felt I could tell for all of them. But your comment is a good push to set up a more rigorous test to see if thats actually the case. Perhaps the rubbing is only on smaller radii. When I get a chance to do that I will report back.

In theory, all LGB should run through R1 OK.

At worst, you might be able to file a small recess in the tanks, now you've got them off, to stop the wheels rubbing

 

[Software Tools]

It must be well known

I had a look at my fleet of LGB 2*44* locos and there are no signs of this!

 

[dunnyrail]

I am wondering if some of the track has inadvertently been laid to less than R1, this can occur if the rails are pushed inwards on curves slightly. I doubt very much could cause the problem. Well worth a check if you have a spare R1 curve lay ut upside down over the fishplates to see if the curve radius is consistent.

 

[PhilP]

I wonder if the model dates from the time LGB were going through a bad patch?
Perhaps the wheels fitted are the wrong ones, and over diameter?

Not even sure this would be possible, but a square side-on photo may help..

PhilP

 

[fairflixt]

I had a look at my fleet of LGB 2*44* locos and there are no signs of this!

Oh boy, that sure does indicate something being up with my loco or setup...

 

[fairflixt]

I wonder if the model dates from the time LGB were going through a bad patch?
Perhaps the wheels fitted are the wrong ones, and over diameter?

Not even sure this would be possible, but a square side-on photo may help..

PhilP

Here is what I had saved on the phone. I can try to take others if you'd like. One thing I noticed is that this set of bogies is the one that does not have the carbon brushes so there is no internal spring in the axle and now I'm wondering if that increases side to side travel of the axle just enough to rub on those cylinders.

 

[PhilP]

This may be a 'red-herring' but looking again at your first photo:

I see a black ribbon-cable, and a blue wire? - I would not expect to see a blue wire, or either routed the way it is..

Has work been done on the loco?

I wonder if something is sitting proud / out of place?

PhilP

 

[fairflixt]

This may be a 'red-herring' but looking again at your first photo:

I see a black ribbon-cable, and a blue wire? - I would not expect to see a blue wire, or either routed the way it is..

Has work been done on the loco?

I wonder if something is sitting proud / out of place?

PhilP

From memory, I would have said that modification is unlikely but I haven't taken it apart to be certain. There don't seem to be 2044 diagrams out there but the 20440 does indicate the presence of a ribbon cable. http://www.gbdb.info/data/zeichnung/LGB/2044.pdf

 

[dunnyrail]

I am now confused, is it the bogie or the main driving wheels rubbing?

 

[Fezwig]

This what I do when I'm building new rolling stock or if I have problems like things rubbing or worse like derailment, I have a spare piece of track that is the minimum curve (in your case R1) and turning the loco or vehicle upside-down place the track on, again upside-down and you should be able to see if there is any contact between the wheels and any body work or fittings (you may have to lift pilot/pony wheels up to the rails) if all is OK, then the problem could be a raised bit of track on your R1 curve causing the pilot/pony wheel to go up and hit the tank?

 

[wandgrudd]

This may be a 'red-herring' but looking again at your first photo:

I see a black ribbon-cable, and a blue wire? - I would not expect to see a blue wire, or either routed the way it is..

Has work been done on the loco?

I wonder if something is sitting proud / out of place?

PhilP

Black ribbon cable with 1 side blue is factory fit in this loco mines identical, although I don't remember any rubbing but will have a look and report back shortly!

 

[fairflixt]

I am now confused, is it the bogie or the main driving wheels rubbing?

It's the bogie, not the main wheels. The rear set has carbon brushes while the front set with the cylinders does not. My theory was that this gives the axle more side to side travel. Rubbing on the cylinder requires the bogie to be pushed to the side as far as possible while also the side to side travel out as far as it can go.

 

[fairflixt]

This what I do when I'm building new rolling stock or if I have problems like things rubbing or worse like derailment, I have a spare piece of track that is the minimum curve (in your case R1) and turning the loco or vehicle upside-down place the track on, again upside-down and you should be able to see if there is any contact between the wheels and any body work or fittings (you may have to lift pilot/pony wheels up to the rails) if all is OK, then the problem could be a raised bit of track on your R1 curve causing the pilot/pony wheel to go up and hit the tank?View attachment 326532View attachment 326533

This is brilliant, I'll see if I can try to do this some time this week.

 

[PhilP]

I would also check the back to back of the wheels on that axle. - Could be set a little over gauge.

PhilP