LGB 20140 Feldbahn steam engine

Zerogee said:
Dan,
This pic shows (on left) an old-type Feldbahn mechanism (very stripped-down), and at right the new type.... you can see that the motors are quite different in shape (old type has flattened casing, new one is cylindrical and slightly shorter, so I don't think they are interchangeable). The new-type mechanism still only has direct motor drive to the rear axle, but it replaces the old rubber belt transmission with a new longitudinal driveshaft with bevel gears at each end, to transmit the drive to the front axle.
Interestingly, the new type motor is stamped "Maerklin" rather than Buhler, but it may well still be a Buhler-made unit....?

As far as I am aware, the entire power unit/chassis from a new type loco is a direct swap for the old type, even though the individual parts may not be.
Do note that the apparent size difference in the photo (eg: when looking at the cylinders) is entirely due to perspective - the stripped-down chassis is lying on the box-lid but the new version is a complete inverted loco, thus the working parts are much nearer the camera!

View attachment 217176

Jon.
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Thanks Jon. So the drive shaft may have a longer life span than the timing belt. Especially if long running sessions are the norm.
 
dunnyrail said:
Gavin,
Some time back in this or the Mad Forum there was a very good article on Servicing Buhler Motors. Sounds like yours may benefit from that process. As Bench Warming before running could indicate a build up of all sorts of horrors in the Motor.

Perhaps someone can Bookmark the link for Gavin.
JonD
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It's pinned on this thread....

and, after reading, risk of damaging the old motor is too great for my liking. In the process of obtaining replacement.
 
10 days, order to delivery (half way around the world), and 6 minutes to swap out motors. Loco running sweet as a nut.
Wondered why I persisted for so long with the dodgy one.

One hour running update.... motor only got warm, as opposed to untouchably hot on the old one. Worthwhile exercise. Improved slow running, too. :cool::cool::cool:
 
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Great - pleasure to do business with you sir. I suppose £1 per day for delivery wasn't too bad :)
 
Gavin Sowry said:
It's pinned on this thread....

and, after reading, risk of damaging the old motor is too great for my liking. In the process of obtaining replacement.
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Gavin
So now you have the beast running with a new Motor what have you to loose by trying to restore the old one? You could gain a replacement if you ever need it in the future!
JonD
 
dunnyrail said:
Gavin
So now you have the beast running with a new Motor what have you to loose by trying to restore the old one? You could gain a replacement if you ever need it in the future!
JonD
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Let's say, I haven't thrown the old one away.........
 
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