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Offline Ranjit  
#1 Posted : 29 July 2021 20:15:12(UTC)
Ranjit


Joined: 18/06/2003(UTC)
Posts: 2,910
Location: Chennai, Tamil Nadu, INDIA
Hi All...

I have a question about the Märklin 4067 / 4079 / 4080 "umbau" passenger cars. Are the wheels of the centre axle of these passenger cars running wheels ? It is strange that you have wheels in the centre that are shorter in length !

Does anybody have an exploded diagram for these passenger cars? Also, can somebody show me pictures of the the underside of these passenger cars ?

I am in the process of adding seating and lighting to these passenger cars.

Take care and stay safe.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
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"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
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Offline 60904  
#2 Posted : 29 July 2021 23:34:51(UTC)
60904

Germany   
Joined: 27/11/2007(UTC)
Posts: 280
Yes of course they are real (running) wheels.
Greetings
Martin
Offline Ian M  
#3 Posted : 30 July 2021 00:25:10(UTC)
Ian M

United Kingdom   
Joined: 27/01/2018(UTC)
Posts: 220
Location: England, Shrewsbury
The centre axle has some play so that it can slide from side to side - this means that the wheels can adjust their position to fit around train set curves. As a result you do need to check that they are properly on the rails to start with - it is easy to have the wheels at either end on the rails and the centre ones not when you put the coach on the rails.
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Offline analogmike  
#4 Posted : 30 July 2021 01:05:48(UTC)
analogmike

United States   
Joined: 02/08/2014(UTC)
Posts: 682
Location: NEW JERSEY, USA
Hello Ranjit,
Here are the pics you need. I just dug them out the other day and was contemplating selling them.
Mikey

IMGP1192.JPG
I love the smell of smoke fluid in the morning .
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Offline Ranjit  
#5 Posted : 30 July 2021 05:13:18(UTC)
Ranjit


Joined: 18/06/2003(UTC)
Posts: 2,910
Location: Chennai, Tamil Nadu, INDIA
Thank you, Martin, Ian and Mike for your useful feedback and comments on the centre wheel assembly for the "umbau" passenger cars !

The axle length of the centre wheels is exactly the same as the end wheels to enable one to put them on the track. THe difference is that there is no pin at the end of the wheels and a metal plate to hold them in place. This arrangement makes it possible to have some play. Yes, I agree with you, Ian. It is somewhat difficult to put the centre wheels on the track.

Mike... if you planning to sell your wagons, please let me know. I could use some of the parts as spares. You know, it is so difficult to get spares for these coaches. I have tried literally everywhere.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
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"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
Offline analogmike  
#6 Posted : 30 July 2021 12:45:41(UTC)
analogmike

United States   
Joined: 02/08/2014(UTC)
Posts: 682
Location: NEW JERSEY, USA
You know, You can always remove the center axle assemblies and run them that way. I have a long train of the 4004 three axle cars and I removed all the center wheels. When you look at the train you really can't tell that they are missing. Best of all: No more derailments!Cool
Mikey
I love the smell of smoke fluid in the morning .
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Offline Ranjit  
#7 Posted : 30 July 2021 13:00:33(UTC)
Ranjit


Joined: 18/06/2003(UTC)
Posts: 2,910
Location: Chennai, Tamil Nadu, INDIA
Yes, Mike, I could do that, but really, I want to fix these old carriages to their original condition, do a bit of weathering, and put them up in my showcase and use them on my future layout very sparingly.

Now, are you going to sell a couple of your wagons for spares ?

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
--------------------------------------------------------------------------------------------------------------
"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
Offline hxmiesa  
#8 Posted : 31 July 2021 10:41:05(UTC)
hxmiesa

Spain   
Joined: 15/12/2005(UTC)
Posts: 3,285
Location: Spain
Originally Posted by: analogmike Go to Quoted Post
Hello Ranjit,
Here are the pics you need. I just dug them out the other day and was contemplating selling them.
IMGP1192.JPG

These waggon in reality behave like 2-axled waggons with a long wheelbase. This CAN make running on tight radius difficult. The center axle is just pushed around by the curvature of the track.
Check out the more advanced ROCO waggons of this same models, where the centre axle is sprung between the 2 outer axles, allowing the outer axles to turn slightly. (like if they were 1-axled bogies). The ROCO waggons runs VERY smoothly!

Best regards
Henrik Hoexbroe ("The Dane In Spain")
http://hoexbroe.tripod.com
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Offline Ranjit  
#9 Posted : 31 July 2021 12:38:24(UTC)
Ranjit


Joined: 18/06/2003(UTC)
Posts: 2,910
Location: Chennai, Tamil Nadu, INDIA
You mean the Roco 64993, 64994 and 64995 passenger coaches, Henrik ? They look very nice too, but unfortunately, I have no experience with Roco.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
--------------------------------------------------------------------------------------------------------------
"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
Offline Bogenschütze  
#10 Posted : 31 July 2021 12:40:49(UTC)
Bogenschütze

United Kingdom   
Joined: 10/09/2019(UTC)
Posts: 67
Location: England, Chichester
More than 50 years ago I dabbled with Fleischmann HO and I had two 6-wheel Umbau coaches. I recall they had a similar arrangement whereby the centre axle and its subframe could slide side to side. When this moved off-centre it would turn the outer axles via some linkages so that all 6 wheels were in the same plane as the rails. I think this mechanism is known as a "Cleminson" underframe after the prototype Cleminson Patent of 1883.
Marklin - "The train set I never had as a child."
Keith Bowman
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Offline Ranjit  
#11 Posted : 31 July 2021 12:49:49(UTC)
Ranjit


Joined: 18/06/2003(UTC)
Posts: 2,910
Location: Chennai, Tamil Nadu, INDIA
Very interesting, Keith !

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
--------------------------------------------------------------------------------------------------------------
"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
thanks 1 user liked this useful post by Ranjit
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