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 Posted - September 27 2008 : 10:28:32 PM
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I came by a Bachmann 2-8-2 Loco. It is marked Made in Hong Kong & I put
it on the tracks for the first time recently..
Cab 2528. It is not in HOseeker .
It runs in a stilted manner, seems to have erratic electric pickup & is making a squeaking noise that sounds like something is binding
I stripped it down intending to clean up the brushes /commutator etc & was surprised to find the motor is effectively enclosed in solid metal.
Can anyone tell me the approximate age of this 2-8-2 and whether it is worth persevering with trying to tune it up?
I recall reading somewhere that some of the earlier Bachmann's weren't worth the effort.
If it is fixable, what should I be looking for & tweaking?
Thank you
Tanked
Some pics below: (Front & rear wheels have been removed b4 pics taken)
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Posted - September 27 2008 : 10:48:43 PM
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I've got a 2-8-0 I just fixed that looks exactly like that.
It runs noisy as anything, despite being cleaned and lubricated. And, only the rear drive wheels are geared, so it thumps and pounds on down the track.
However, it pulls pretty good, and smokes, so it's A-OK in my book. 
    
- Matt -
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Posted - September 27 2008 : 11:05:11 PM
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I am trying to figure where the binding is- did yr valve gear run freely??
So far it 'thumps & pounds' as you put it, a few feet, then stops.
Tanked.
quote:I've got a 2-8-0 I just fixed that looks exactly like that.
It runs noisy as anything, despite being cleaned and lubricated. And, only the rear drive wheels are geared, so it thumps and pounds on down the track.
However, it pulls pretty good, and smokes, so it's A-OK in my book.
Originally posted by MM 1498 - September 27 2008 : 10:48:43 PM
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Posted - September 27 2008 : 11:50:50 PM
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It ran okay, yes.
I think it thumps like that because the rear wheels alone drive the 8 driver wheels, so the connecting rod tends to kind of pound the wheels around.
One thing I noticed is that the screws that hold the metal sides together have to be REALLY tight, especially the screws holding the motor springs down.
/tyco/forum/uploaded/MM 1498/IMG_14081.jpg
Here's a video for ya:
http://ca.youtube.com/watch?v=niOSrw5hFXY
By the way, the little container that holds smoke fluid leaks badly on mine. It still works a bit, though.
- Matt -
Edited by - MM 1498 on September 28 2008 12:37:08 PM
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Posted - September 28 2008 : 12:46:10 PM
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The thumps,and bumps you are talking about just might be cracked gears.
Older Bachmann units are notorious for some of the drive gears cracking and binding up.
Carl T.
President of the Cape James Terminal RR.
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Posted - September 28 2008 : 4:29:52 PM
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Never even thought of that...
- Matt -
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Posted - September 28 2008 : 5:02:19 PM
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Will try & check gears out.
Your photo looks be the same engine, but a 2-8-0 ilo of a 2-8-2.?
What would also be useful is if someone could point me to an exploded diagram for this model.
Still curious as to when this 2-8-2 was produced.
Tanked
quote:Never even thought of that...
Originally posted by MM 1498 - September 28 2008 : 4:29:52 PM
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Posted - September 28 2008 : 5:07:58 PM
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http://www.hoseeker.org/assemblyexplosionbachmann/bachmann282mikadodiagram1990.jpg
http://www.hoseeker.org/assemblyexplosionbachmann/bachmannchinasymikado282.jpg
only one i can find ken
Edited by - catfordken on September 28 2008 5:10:21 PM
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Posted - September 28 2008 : 11:05:45 PM
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Ken
Those were the 2 I picked up in HOseeker, but neither is exactly the loco I have. Hence my scratching my head.
Tanked
quote:
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Posted - September 29 2008 : 08:24:56 AM
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Matt,
The problem with your Consolidation looks more like a set of drivers is out of quarter. Older Bachmanns are notorious for this, since the wheels are mounted on plastic stub axles with no keying to keep them aligned with each other. Sometimes an axle develops a split (which can include the driven axle gear), or they simply slip. From what I little I can see from the slow runby in your video, it looks to me like the siderods are not in a straight line -- the rod between the geared drivers and the next set looks like it's inclined instead of level.
If that is the issue, you can requarter them by eye and test until it runs smooth, then lock them in place with CA where the wheel and axle meet. Degrease with alcohol first. (Ray has a tutorial on how to do this with a Bmann N scale loco on 2 Guys.) Just be sure that is the problem before you attempt tackling it -- you don't want to twist them out of alignment if the bind is somewhere else.
The Tyco Depot
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Posted - September 29 2008 : 12:24:05 PM
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I would have to agree with Nelson. After seeing the video it looks like there may be a driver or two out of quarter.
The 2-8-0 I posted a photo of in the LOT week thread had the drivers epoxied together when I got it. They are holding together pretty good. It is like yours and I think they are the earlier version (pre 1990).
I have another one that I need to rebuild once I find a few parts for it. It is like the one shown in the part diagrams.
Ray
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Posted - September 29 2008 : 1:33:41 PM
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Due to novice status in MR, 'drivers out of quarter' is a phrase I haven't struck before.
Can you refer me to a description and or diagrams of this ' quartering' so that I can better understand it & check my 2-8-2 for the condition?
Thanks
Tanked
quote:Matt,
The problem with your Consolidation looks more like a set of drivers is out of quarter.
Originally posted by NickelPlate759-September 29 2008: 08:24:56 AM
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Posted - September 29 2008 : 7:50:52 PM
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quote:Matt,
The problem with your Consolidation looks more like a set of drivers is out of quarter. Originally posted by NickelPlate759-September 29 2008: 08:24:56 AM
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Actually, the axles have notches on each side that line up with the wheels, preventing this.
To be honest, I think the biggest problem with these Bachmann's is that the motor is garbage. 
- Matt -
Edited by - MM 1498 on September 29 2008 8:06:30 PM
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Posted - September 30 2008 : 01:18:40 AM
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quote:
To be honest, I think the biggest problem with these Bachmann's is that the motor is garbage.
Originally posted by MM 1498-September 29 2008: 7:50:52 PM
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True, that is a problem.
The drivers on mine don't have those tabs on the wheel bearings.
Ray
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