Eratic Bachmann Class 66 running

[ronnie thommo]

Hi Guys

 

An issue has got me tearing my hair out

I just cannot understand why this happens

 

I have had 66 411 running round my layout for 6 months,and it has been running like a dream for the whole period.It has been hauling 6 Bachmann Intermodal wagons, 4 loaded,and 2 not.

Yesterday, I cleaned the wheels,and my whole track work.

I don't see the point of doing one without the other.

Both the track,and loco wheels are gleaming.

I have not disturbed the pickups in any way, I am always careful not to do this

But now, the loco is running intermittently, more so around the corners, which I hasten to add are not tight.

To add to the confusion after a lot of head scratching, I turned the loco around, so that the usual leading cab, is now the at the rear.

It now runs fine

Why on earth has this suddenly started happening ? What is the issue, does anyone know please?

 

Cheers

Ronnie

[34theletterbetweenB&D]

Probably a drive coupler in the flywheel slipping. If you put your ear close to the loco when it stops unexpectedly can you still hear the motor running? (Alternatively for a visual check put felt marker ink on one tyre side in each bogie.)

 

Simple fix, pull the loose drive coupler out of the flywheel, drop of cyano, reinsert.