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Offline Artologic  
#1 Posted : 26 July 2012 17:37:12(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hello Everyone,

I have this very nice br74 loco (36740), that is until you run it... It struggles to pull 2 3axle umbau and 2 donnerbuschen on a flat r1 track. Am I the only one experiencing this? Short said: do they all pull so badly and did anyone find a cure in that case? Or what should it be able to pull?

Kristof
Offline RayF  
#2 Posted : 26 July 2012 18:59:15(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Hi Kristof,

I have a 36741 on my layout at the moment, which is identical mechanically, and it's not having any trouble pulling 6 freight wagons. I also had it pulling 6 3-axle coaches with no signs of any problem.

UserPostedImage
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#3 Posted : 26 July 2012 19:23:57(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Ray,

Thanks for the reply! That s a very clear answer, do you have any hills or climbs for this train on your layout where it runs on? In any case, I wonder what is wrong with this engine then...

Kristof
Offline RayF  
#4 Posted : 27 July 2012 01:00:14(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: Artologic Go to Quoted Post
Hey Ray,

Thanks for the reply! That s a very clear answer, do you have any hills or climbs for this train on your layout where it runs on? In any case, I wonder what is wrong with this engine then...

Kristof


No, no hills, but plenty of R1 curves.

How does yours struggle? Do the wheels slip, or does the motor stall? Are any of your coaches dragging a seized axle? Are they fitted with sliders for lighting sets? It's difficult to know where the problem lies without a bit more information.

I can try to replicate the exact train that you have behind my loco, and see if does any different. I've also got some spare tracks I can set up on the floor and I can put in a bit of slope, to see if mine has trouble with grades.
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline SNAFU  
#5 Posted : 27 July 2012 08:09:31(UTC)
SNAFU

Australia   
You have been a member since:: 08/01/2008(UTC)
Posts: 279
Location: Naracoorte, South Austrlia
Hi Kristoff

Have you checked the traction tyres on the drive wheels?
Tony
Curiosity hasn't killed this cat yet.
Offline Artologic  
#6 Posted : 27 July 2012 09:01:08(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
@Ray: The motor is runs fine in every case, the loco just starts to slip. It has that on r1 curves, bend switches... I cleaned all the tracks by hand, so they are not full of oil. The carriages are 4317 & 4319 and 2 donnerbuschen. They don t have any sliders and they all run ok (or they feel like it when i push them by hand). What do you mean by a seized axle? It would be nice if you could replicate the same situation, altough your 3 axle carriages would run the same as the 4317 & 4319 I think. The grade test would be great too :-)

@Tony: The traction tyres are present and look clean. I got the loco in a trade so I don t know what happened with it. Still it s a fairly recent loco, could they already be worn out?

Thanks for the help so far!

Kristof
Offline RayF  
#7 Posted : 27 July 2012 10:07:16(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: Artologic Go to Quoted Post
@Ray: The motor is runs fine in every case, the loco just starts to slip. It has that on r1 curves, bend switches... I cleaned all the tracks by hand, so they are not full of oil. The carriages are 4317 & 4319 and 2 donnerbuschen. They don t have any sliders and they all run ok (or they feel like it when i push them by hand). What do you mean by a seized axle? It would be nice if you could replicate the same situation, altough your 3 axle carriages would run the same as the 4317 & 4319 I think. The grade test would be great too :-)

@Tony: The traction tyres are present and look clean. I got the loco in a trade so I don t know what happened with it. Still it s a fairly recent loco, could they already be worn out?

Thanks for the help so far!

Kristof


Hi Kristof,

By "seized axle" I mean one that doesn't turn, or turns very stiffly. They should all spin freely.

I have just conducted a test with my 36741 pulling 3 3-axle umbauwagen, and 6 donnerbuschen. At this point there was a small amount of wheelslip as the loco went over a turnout just after a 180 degree R1 curve, but it immediately found grip again and carried on.

Here is a video I made of the loco pulling these 9 coaches. The slight hesitation in this video is actually caused by a dirty spot on the track. The loco's wheels did not spin in this case.


Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
thanks 1 user liked this useful post by RayF
Offline Artologic  
#8 Posted : 27 July 2012 10:13:44(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Ray,

Thanks for making the movie! I checked it over once more, but no stuck wheels. That looks very nice indeed, I wish mine ran like that. Here I would be more then happy when she would pull 4 carriages without slipping.

Kristof
Offline steventrain  
#9 Posted : 27 July 2012 21:40:08(UTC)
steventrain

United Kingdom   
Joined: 21/10/2004(UTC)
Posts: 31,709
Location: United Kingdom
I have the 36740 and run will with pulling five wagons or three six-wheels coaches.

It is value for money and I am happy with it.
Large Marklinist 3- Rails Layout with CS2/MS2/Boosters/C-track/favorites Electric class E03/BR103, E18/E118, E94, Crocodiles/Steam BR01, BR03, BR05, BR23, BR44, BR50, Big Boy.
Offline pa-pauls  
#10 Posted : 27 July 2012 22:08:39(UTC)
pa-pauls


Joined: 08/06/2002(UTC)
Posts: 1,843
Location: Norway
Hi Kristof,

Maybe one of the plastic gears are loose on their axle ?
Maybe one of the wheels (with traction) is loose on their axle ?

Just a thought Blushing
Pål Paulsen
Märklin Spur 1 Digital, epoche 3
Offline river6109  
#11 Posted : 27 July 2012 22:31:27(UTC)
river6109

Australia   
Joined: 22/01/2009(UTC)
Posts: 14,881
Location: On 1965 Märklin Boulevard just around from Roco Square
Kristof,

All traction tyres look nice if they are still on the wheel, this doesn't mean they are ok,

What you have to do is get a small screwdriver and see if the traction tyre is loose or yuo can move it.

Going into all these option your best bet is replace them with new ones and make sure the wheel groove is clean.

All your trouble will be over

John

https://www.youtube.com/river6109
https://www.youtube.com/6109river
5 years in Destruction mode
50 years in Repairing mode
Offline Artologic  
#12 Posted : 31 July 2012 08:48:31(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Everyone,

Thanks for the replies!

@Steven: If I could make her to pull that, I would be very happy as well :-)
@Pa-Pauls: I ll check on that, you never know, right?
@John: Thanks for the tip, I tought it wasn t nessasary because it was a quite recent loco. I ll be ordering those parts, as soon as the marklin parts are coming back up on the marklin site.

Kristof
Offline Artologic  
#13 Posted : 31 July 2012 18:50:42(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hello Everyone,

A quick question, it seems that marklin changed their traction tyre number from 129408 to 7153, but those seem awfully small, can anyone confirm if those are the right traction tyres? Or did they make a mistake?

Kristof
Offline Artologic  
#14 Posted : 01 August 2012 14:34:08(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
I tried the 7153 today, just like i tought, too thick and too small in size. And the originals are nowhere to be found on the marklin site. Any suggestions anyone?

Kristof
Offline RayF  
#15 Posted : 01 August 2012 14:43:22(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Hi kristof,

My loco quotes # 149328 for the tyres, but this also seems to be not produced any more.

7153 is the tyre for the older model of the Br74, which presumably has the same size wheels. Are you sure they won't stretch over the wheel? I've changed some tyres in the past where I've really had to apply force to get the tyre to fit.



Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#16 Posted : 01 August 2012 20:01:07(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Ray,

If I input your number in the marklin database, I don t get the tyres, but the treibrad (the wheels). I know that it indeed is the number of the old br24 and 74 (I have those pretty ladies too :-)). I tried (I had for starters a real hard time to unscrew the bolt on the wheel, marklins screwdrivers don t seem to work...) to pull it over but it s almost double as thick and lots smaller then the wheelsize. Marklin just changed the number this week, from the old number to the 7153 :-(. I would try again or with another size tyre, if the height of the tyre wouldn t be twice as much as well...

The wheelsize of the old loco s is also a bit smaller then the new wheels.

Kristof

Ps: I m getting dissapointed by marklin spares service lately, this isn t the first time a part that needs replacing isn t avaiable anymore or for a very long time. Even the normal wear out parts...
Offline RayF  
#17 Posted : 01 August 2012 22:43:54(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Kristof, the time may have come for an email to the Marklin service centre.

I have just been in correspondence with them over a spare part for my Br34. I had broken the coupling bar that links the loco to the tender in January. The part was red in the database, and when I originally contacted them they told me to try again in March. This week I contacted them again, as the spare part was still showing red, and they gave me another number to order, which is now in stock again.

Hopefully I will get this part sorted soon, but it has been more than half a year so far.

BTW, sorry, I gave you the wrong number for the tyre. I read the wrong line on my spare parts sheet!
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#18 Posted : 02 August 2012 09:35:23(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Ray,

I sent an email this morning :-). Hopefully they know something useful for something as simple as these traction tyres... Like you said, I also know the trick of using other fitting parts... I still think it s sad we have to do it this way... Anyhow I hope I have an answer soon and you get your part quickly...

Kristof

Ps: Don t worry about it... Here we say: If you don t do anything, you can t miss...
Offline Artologic  
#19 Posted : 03 August 2012 21:56:20(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Thinking about possible alternatives, wouldn t roco br74 tyres fit?

Kristof
Offline H0  
#20 Posted : 03 August 2012 22:19:10(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,474
Location: DE-NW
I just checked the spare parts list online: traction tyres are E129408 (sold as a pack of 20, but currently not available).
Twice as expensive as the 715x traction tyres ...

Always add a leading E if the old number does not work any more (and always check how many you get).
Regards
Tom
---
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
UserPostedImage
Offline RayF  
#21 Posted : 03 August 2012 22:59:38(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
There you go, Kristof!

Your email must have got them to look at the parts list and they realised that they had the wrong number in there!

Tom, until a day or so ago that parts list said 7153 for the traction tyres, now it says E129408.
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline H0  
#22 Posted : 03 August 2012 23:25:52(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,474
Location: DE-NW
The PDF from 09.09.09 reads 129408. Maybe they messed up their database in between.
Regards
Tom
---
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
UserPostedImage
Offline RayF  
#23 Posted : 04 August 2012 01:06:41(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: H0 Go to Quoted Post
The PDF from 09.09.09 reads 129408. Maybe they messed up their database in between.


Yes, very likely!
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#24 Posted : 04 August 2012 09:09:21(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Ray & Tom,

This week they stripped all their spart lists (just on the moment I wanted to order), and I guess it indeed must have gone wrong at that point. Before that the number was right and after is the number (even with e) wasn t to be found in their spare part lookup box anymore.

@Tom: that they are double as expensive must be right, there are double the tyres in it too :-). Still keeps the issue that they aren t able to deliver them :-(

Kristof
Offline H0  
#25 Posted : 04 August 2012 10:15:05(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,474
Location: DE-NW
10 standard tyres are € 3.49 while 20 special tyres for BR 74 are € 15.00. Four times as much for the double amount, twice as much per tyre.
Regards
Tom
---
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
UserPostedImage
Offline RayF  
#26 Posted : 04 August 2012 10:19:55(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: Artologic Go to Quoted Post
Hey Ray & Tom,

This week they stripped all their spart lists (just on the moment I wanted to order), and I guess it indeed must have gone wrong at that point. Before that the number was right and after is the number (even with e) wasn t to be found in their spare part lookup box anymore.

@Tom: that they are double as expensive must be right, there are double the tyres in it too :-). Still keeps the issue that they aren t able to deliver them :-(

Kristof


Kristof, don't worry. Red light in the spares list means that they are not available at this time, but will be available in the future. A little bit of patience will be rewarded.

I had to wait for the spare part for my Br34 for a few months, but it's now available at last.
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline RayF  
#27 Posted : 04 August 2012 10:21:30(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: H0 Go to Quoted Post
10 standard tyres are € 3.49 while 20 special tyres for BR 74 are € 15.00. Four times as much for the double amount, twice as much per tyre.


I would expect this to be the case for a non-standard tyre.
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#28 Posted : 04 August 2012 10:33:19(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Tom: I misunderstood what you meant then :-).

@Ray: I won t mind paying a bit more, as long as it s deliverable. But I ll wait for them. At least I found a fitting lightbar for my br03, which has only 1 light for about a year.

Kristof

Ps: Ray: isn t red mean t it won t be back soon and yellow it will be out between now and a few months?
Offline H0  
#29 Posted : 04 August 2012 11:57:58(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,474
Location: DE-NW
Different colour codes for spare parts: green: on stock; yellow: few on stock; red: not on stock, but coming back; grey: gone for good.

Even standard parts like sliders, brushes, standard tyres (715x) can be on code red for months.
Regards
Tom
---
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
UserPostedImage
Offline NZMarklinist  
#30 Posted : 05 August 2012 16:50:49(UTC)
NZMarklinist

New Zealand   
Joined: 15/03/2011(UTC)
Posts: 1,757
Location: Auckland NZ
Hello Kristof,
Sorry to read you are having some trouble with your Klass 74 consist.
One other problem you could look out for is with your 4317 & 4319 wagens. Does the middle axle carrier slide freely from side to side, if they don't it could cause resistance on curves. I have learned from a Marklinist friend this can be a real problem with M 3axle wagens and have not bought any because of this. Their other big problem is derailing when backing or pushing over diverging turnouts. The said friend removed the centre axle carrier from his coaches because of this ThumbDown
Glen
Auckland NZ

" Every Marklin layout needs a V200, a Railbus and a Banana car", not to mention a few Black and red Steamers, oh and the odd Elok !

CS1 Reloaded, Touch Cab, C Track Modules, K track layout all under construction. Currently Insider
Offline RayF  
#31 Posted : 05 August 2012 18:19:46(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,872
Location: Gibraltar, Europe
Originally Posted by: NZMarklinist Go to Quoted Post
Hello Kristof,
Sorry to read you are having some trouble with your Klass 74 consist.
One other problem you could look out for is with your 4317 & 4319 wagens. Does the middle axle carrier slide freely from side to side, if they don't it could cause resistance on curves. I have learned from a Marklinist friend this can be a real problem with M 3axle wagens and have not bought any because of this. Their other big problem is derailing when backing or pushing over diverging turnouts. The said friend removed the centre axle carrier from his coaches because of this ThumbDown


Really?

I've had Marklin 3 axle coaches for many years and never had a problem! I've run them on M Track and more recently on C Track. I have R1 curves and curved turnouts.

I think your friend might need to take more care over his track laying!
Ray
Mostly Marklin.Selection of different eras and European railways
Small C track layout, control by MS2, 100+ trains but run 4-5 at a time.
Offline Artologic  
#32 Posted : 07 August 2012 08:14:40(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Tom,

I tough red ment, forget about it, thanks for the heads up! I ll wait for them to become avaiable!

@ Glen & Ray,

No problem here either with those, they are smooth running and the axles run and move freely.

Further I attemped to turn over the traction tyres and it seemed to have helped a bit, so I m going to replace them as soon as possible. It only seems to happen on those curved turnouts too...

Kristof
Offline TrainIride  
#33 Posted : 08 August 2012 08:37:35(UTC)
TrainIride

France   
Joined: 23/10/2010(UTC)
Posts: 2,066
Location: FRANCE
Hi Kristof,

Hoping the new traction tyres will resolve your problem.

By the way, I have the 36742 french version of this loco, and I had at first a trouble with it:
The front small wheels axle were not running.
Because of the too much pressure of small current feeding wires behind the wheels,
it was acting as brakes.
I've reduced the pressure of these wires by bending them a bit and it was OK !

Best regards
Joël
Offline Artologic  
#34 Posted : 08 August 2012 08:55:37(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hello Joel,

Thanks for the reply. I hope in time it will solve the issue too. What you write about, I have noticed too, especially in curves... Where did you bend them, because they still need to pickup the current.

Kristof
Offline TrainIride  
#35 Posted : 08 August 2012 09:13:33(UTC)
TrainIride

France   
Joined: 23/10/2010(UTC)
Posts: 2,066
Location: FRANCE
Originally Posted by: Artologic Go to Quoted Post
Hello Joel,

Thanks for the reply. I hope in time it will solve the issue too. What you write about, I have noticed too, especially in curves... Where did you bend them, because they still need to pickup the current.

Kristof


Hi Kristof,

I bended gently the wires with pliers enough for there's only one wire that touch the wheels at a time.
When the left wheel touch the left wire, the right don't and so on..

I think this current feeding solution is just an inheritance of the Trix model compatibility
that must be feeded with DC current so different polarity between left ans right wheel.

I also think this current feeding system on the front wheels is useless on Märklin system.

I'll send you a pic.

regards
Joël






Offline TrainIride  
#36 Posted : 08 August 2012 09:26:56(UTC)
TrainIride

France   
Joined: 23/10/2010(UTC)
Posts: 2,066
Location: FRANCE
So, the pic of the front wheels and the slightly bended contacts .

As you can see, the wheels are touching the wires I don't know when,
but now they run fine and I never have any problem of current feeding with this model !

Hope this helps, good luck and take care..

regards
Joël
TrainIride attached the following image(s):
mn36742_frontwheels.jpg
Offline Artologic  
#37 Posted : 08 August 2012 10:03:09(UTC)
Artologic

Belgium   
Joined: 21/08/2010(UTC)
Posts: 502
Hey Joel,

Thanks for the tip. I ll get to it as soon as i have my toolbox moved...

Kristof
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