Skip to main content

I have a graduated line of Gargraves flex track with MTH graduated trestle piers. On some loco's the cow catcher shorts out on the first section of the graduated trestle right where the incline starts.  Actually it just sparks a lot but does not stop the loco.  Any suggestions on how to remedy this situation?

 

Paul Edgar

Original Post

Replies sorted oldest to newest

I would start with a shallow approach wedge. You can get a piece of 1/4" balsa sheet, cut a six to eight inch wedge of the sheet (4" wide sheet should work), take a sanding block and put an even taper from one end to the other so you end up with a gentle slope and that should end the problem. Same thing happens in HO (been there done that) good to know that the same thing happens in O gauge now that I've arrived at the larger scale.

Good luck and keep the slope even with no bumps or dips.

Gradual means just that, gradual. One must consider the height of the locomotives under features such as the cow catcher so as to not cause any mishaps or accidents.

 

If she is so close in tolerance, I would shallow the grade as much as possible. In other words, take the track out even further and let her have more room to negotiate up the grade. I once had this problem, but with a diesel engine. My solution? Well, lets just say for the record, I doubt many would shave the plow up a few specs so she can run the track smoothly, but hey, it worked and actually the plow looked great as well.

 

PS I am not suggesting you do this to your loco's cow catcher.

 

Pete

Last edited by Former Member
Originally Posted by Edstrains:

I would start with a shallow approach wedge. You can get a piece of 1/4" balsa sheet, cut a six to eight inch wedge of the sheet (4" wide sheet should work), take a sanding block and put an even taper from one end to the other so you end up with a gentle slope and that should end the problem. Same thing happens in HO (been there done that) good to know that the same thing happens in O gauge now that I've arrived at the larger scale.

Good luck and keep the slope even with no bumps or dips.

Somewhere I saw a layout in progress where the approach 'wedge' was in fact standard shims used in the building industry. You can get them in plastics or wood for about a buck a pack at HD. Two of them placed side by side should be plenty wide.

 

Click To EnlargeShims and Shim Stock Information

Last edited by Mark440

As mentioned above, you need to reduce the gradient where you have the problem with that locomotive.  Mark's idea of using the wedges appears to be worth a shot.  Alternatively, you can place the first pier/trestle farther back from its present location (provided the track remains stable) resulting in reduced gradient.

 

How did you decide where to place the piers/trestles; i.e. how did you determine the distance from the beginning of the ascent and for succeeding piers/trestles?

Last edited by Pingman
Originally Posted by Mark440:
Originally Posted by Edstrains:

I would start with a shallow approach wedge. You can get a piece of 1/4" balsa sheet, cut a six to eight inch wedge of the sheet (4" wide sheet should work), take a sanding block and put an even taper from one end to the other so you end up with a gentle slope and that should end the problem. Same thing happens in HO (been there done that) good to know that the same thing happens in O gauge now that I've arrived at the larger scale.

Good luck and keep the slope even with no bumps or dips.

Somewhere I saw a layout in progress where the approach 'wedge' was in fact standard shims used in the building industry. You can get them in plastics or wood for about a buck a pack at HD. Two of them placed side by side should be plenty wide.

 

Click To EnlargeShims and Shim Stock Information

That's my recommendation as well.  Carpenter's shims!!!

 

George

Add Reply

Post
×
×
×
×
Link copied to your clipboard.
×
×