LGB Feldbahn loco 20140

KeithT

KeithT

Hillwalking, chickens and - err - garden railways.
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I am in the process of fitting a replacement drive axle which has involved removing the wheels and replacing them on a new axle.
On fitting the axle back on the loco I have a problem with jerky running. I have tried rotating the axle slightly in relation to the front one without success. It seems that I will have to remove one wheel and rotate it slightly but before I do that I wonder if anyone can confirm please if I have fitted the rocking linkage between the running board and the rear axle correctly.
Foolishly I forgot to photoograph it before dismantling it. &:

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Re:LGB Feldbahn loco 20140

Thanks Andy It appears that I have it correct so it must be the quartering that I got wrong!
 
Re:LGB Feldbahn loco 20140

Keith in your photo the rear wheel is clearly not in the same rotation as the front and the rear seems to be out by one gear tooth looking at the counter weight position.
 
Re:LGB Feldbahn loco 20140

funandtrains said:
Keith in your photo the rear wheel is clearly not in the same rotation as the front and the rear seems to be out by one gear tooth looking at the counter weight position.
Click to expand...

I agree!

I couldn't quite see it at first, but it didn't look quite right, especially when compared to Andy's photo.

But it looks like you are now checking the quartering....
 
Re:LGB Feldbahn loco 20140

KeithT said:
I wonder if anyone can confirm please if I have fitted the rocking linkage between the running board and the rear axle correctly.
Click to expand...
For future reference the piece outlined in green is known as a return crank.
Its function is to return the motion of the end connected to the valve gear almost but not quite to the axle centre line.
For any loco with a return crank operated valve gear set the narrower end of the crank almost in line with the axle.

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Re:LGB Feldbahn loco 20140

Thanks for all the useful info.
The problem is that when I refitted the wheels I got one side 'out' in relation to t'other.
I did not get the 90degree angle right despite tweaking it before I tapped the wheel home.
It is awkward to set spot-on but it's not rocket science.
Having done it once makes things easier.
 
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