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Offline Normmeister  
#1 Posted : 14 April 2023 07:20:25(UTC)
Normmeister


Joined: 15/04/2011(UTC)
Posts: 37
Location: Australia
It appears the new 74862 Marklin turntable is now becoming actually available.

Does anyone know what has been changed from the withdrawn 74861 ? The 74861 was a bit on the dodgy side as far as reliable operation is concerned.

regards
Norm in Oz.

Offline JohnjeanB  
#2 Posted : 14 April 2023 11:55:38(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,083
Location: Paris, France
Hi Norm

The newer version of Märklin's turntable 74862 is only a colour change compared with its predessor 74861.
There are no significant changes except a color change on the walking range around the pitt and maybe a little cosmetic change on access tracks.
AFAIK, the turntable works perfectly well PROVIDED it is installed EXACTLY as suggested in the manual.

Of particular importance are those:
- it must be installed on a flat (not warped) and sturdy surface with an exact dimension circle cut
- access tracks must be attached to the TT and screwed on the table BEFORE any further rail additions to the rest of the layout.

Generally everything that could cause a mechanical stress on the TT pitt (a disk really) must be avoided at all times (warping, too small hole adding stress on tracks, too large a hole causing the fixation part to hang down).
The sensible part of the TT is its latch (a servo motor lock of the bridge) that must be treated gently (no excess force because the bridge is not free to rotate..
Remember, the TT does not provide power to the access track, it is your job before installation.

Cheers
Jean
thanks 2 users liked this useful post by JohnjeanB
Online mbarreto  
#3 Posted : 14 April 2023 12:39:04(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 1,257
Hello,

I suggest you look at page 3 of the manuals of both TTs. It seems the fixation/attachment system to the table is different.


https://static.maerklin....a6157e12751628150035.pdf


https://static.maerklin....2c227f27fa1681286076.pdf

Miguel
Best regards,
Miguel
Mostly Märklin H0.


thanks 2 users liked this useful post by mbarreto
Online mbarreto  
#4 Posted : 14 April 2023 13:10:46(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 1,257
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel
Best regards,
Miguel
Mostly Märklin H0.


thanks 1 user liked this useful post by mbarreto
H0
Offline kiwiAlan  
#5 Posted : 14 April 2023 14:25:20(UTC)
kiwiAlan

United Kingdom   
Joined: 23/07/2014(UTC)
Posts: 8,082
Location: ENGLAND, Didcot
Originally Posted by: mbarreto Go to Quoted Post
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel


They also seem to have changed the indexing bits for each track, it seems they can be put in either way around now - see picture 6, page 4 of both manuals.

thanks 1 user liked this useful post by kiwiAlan
Online mbarreto  
#6 Posted : 14 April 2023 14:28:19(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 1,257
Originally Posted by: kiwiAlan Go to Quoted Post
Originally Posted by: mbarreto Go to Quoted Post
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel


They also seem to have changed the indexing bits for each track, it seems they can be put in either way around now - see picture 6, page 4 of both manuals.



Good point! Hadn't noticed it yet.
The drilling hole is now wider to accept the new attachment piece.

Miguel



Best regards,
Miguel
Mostly Märklin H0.


Offline Drongo  
#7 Posted : 17 April 2023 12:38:11(UTC)
Drongo

Australia   
Joined: 03/06/2008(UTC)
Posts: 1,221
Location: Sydney, NSW
Originally Posted by: mbarreto Go to Quoted Post
Originally Posted by: kiwiAlan Go to Quoted Post
Originally Posted by: mbarreto Go to Quoted Post
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel


They also seem to have changed the indexing bits for each track, it seems they can be put in either way around now - see picture 6, page 4 of both manuals.



Good point! Hadn't noticed it yet.
The drilling hole is now wider to accept the new attachment piece.

Miguel





But will they still fall out ????? Cursing Cursing Cursing
Take it easy . . . . or any other way you can get it !!!!
thanks 1 user liked this useful post by Drongo
Offline H0  
#8 Posted : 17 April 2023 13:16:34(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,254
Location: DE-NW
New turntable requires a hole of 292 to 294 mm, compared to >= 288 mm for the old one.
Clearance below level 0 is now 45 mm compared to 38 mm.

So the new one cannot (always) be easily installed where the old one was installed.
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
Online mbarreto  
#9 Posted : 11 May 2023 17:50:29(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 1,257

Did anyone see a photo or video of the new 74862? I see it is available in the stores, but I can't find any images...

Miguel
Best regards,
Miguel
Mostly Märklin H0.


Offline dickinsonj  
#10 Posted : 12 May 2023 01:00:30(UTC)
dickinsonj

United States   
Joined: 05/12/2008(UTC)
Posts: 1,676
Location: Crozet, Virginia
Regards,
Jim

I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains!
So many trains and so little time.
Online mbarreto  
#11 Posted : 12 May 2023 15:12:52(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 1,257
Originally Posted by: dickinsonj Go to Quoted Post


That seems to be a CAD image and not a real photo.

Miguel


Best regards,
Miguel
Mostly Märklin H0.


Offline Minok  
#12 Posted : 13 May 2023 00:48:28(UTC)
Minok

United States   
Joined: 15/10/2006(UTC)
Posts: 2,310
Location: Washington, Pacific Northwest
Originally Posted by: kiwiAlan Go to Quoted Post
Originally Posted by: mbarreto Go to Quoted Post
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel


They also seem to have changed the indexing bits for each track, it seems they can be put in either way around now - see picture 6, page 4 of both manuals.




How so?
Looking at it, figure 5 still indicates which side must be up vs down. All figure 6 did is indicate which one goes with the blank band, and which with the track piece on the band. The old figure 6 also repeated the info on which side must be up vs down, but I think they removed it from figure 6 to make it simpler and clearer for what that figure focuses on.

Seems in all cases the straight ridge must still be at the bottom.
Toys of tin and wood rule!
---
My Layout Thread on marklin-users.net: InterCity 1-3-4
My YouTube Channel:
https://youtube.com/@intercity134
Offline Minok  
#13 Posted : 13 May 2023 00:56:06(UTC)
Minok

United States   
Joined: 15/10/2006(UTC)
Posts: 2,310
Location: Washington, Pacific Northwest
Originally Posted by: JohnjeanB Go to Quoted Post

Of particular importance are those:
- it must be installed on a flat (not warped) and sturdy surface with an exact dimension circle cut



Yes; the design flaw, in many peoples experience, is seen as the fact that the slot in the turn table into which the indexing keys slide into as the turn table platform rotates, has a sharp right angle edge to it, rather than a slight bevel. So a slight misalignment, due to any twisting or uneven base - a thing that would have zero consequence on other parts of the model layout construction and its equipment, causes the rotating table platform to catch on that hard edge. A bevel would allow a slight misalignment and guide the key into the slot.

At least that is my understanding from those that have had issues with the table and its catching.
Toys of tin and wood rule!
---
My Layout Thread on marklin-users.net: InterCity 1-3-4
My YouTube Channel:
https://youtube.com/@intercity134
Offline kiwiAlan  
#14 Posted : 13 May 2023 15:21:23(UTC)
kiwiAlan

United Kingdom   
Joined: 23/07/2014(UTC)
Posts: 8,082
Location: ENGLAND, Didcot
Originally Posted by: Minok Go to Quoted Post
Originally Posted by: kiwiAlan Go to Quoted Post
Originally Posted by: mbarreto Go to Quoted Post
Hello again,

With the new fixation system, Märklin could also sell an accessory that when used together with the new fixation system,
is useful to make pies (before installation with the TT, of course).

Miguel


They also seem to have changed the indexing bits for each track, it seems they can be put in either way around now - see picture 6, page 4 of both manuals.




How so?
Looking at it, figure 5 still indicates which side must be up vs down. All figure 6 did is indicate which one goes with the blank band, and which with the track piece on the band. The old figure 6 also repeated the info on which side must be up vs down, but I think they removed it from figure 6 to make it simpler and clearer for what that figure focuses on.

Seems in all cases the straight ridge must still be at the bottom.


On the 74861 the diagram seems to indicate that there is a definite inside and outside on the inserts, and this is missing from the 74862 diagram.

Offline Drongo  
#15 Posted : 23 May 2023 12:07:31(UTC)
Drongo

Australia   
Joined: 03/06/2008(UTC)
Posts: 1,221
Location: Sydney, NSW
The new TT has been improved slightly, however, the major problem of the small tabs falling out or jamming the bridge, hasn't been fixed. Therefore, it's still a piece of SH##.
Take it easy . . . . or any other way you can get it !!!!
Offline mapi  
#16 Posted : 06 June 2023 12:56:37(UTC)
mapi

Portugal   
Joined: 30/05/2023(UTC)
Posts: 3
Location: Porto, Porto
At last I may say that I was sucsseful in solving the problems of my marklin TT 78461.
After gluing the tabs, reforcing the springs that drive the bridge and reshap of the locking tab of the bridge it is working perfectly well.
But it was not easy.
thanks 2 users liked this useful post by mapi
Offline Drongo  
#17 Posted : 06 June 2023 14:48:07(UTC)
Drongo

Australia   
Joined: 03/06/2008(UTC)
Posts: 1,221
Location: Sydney, NSW
Originally Posted by: mapi Go to Quoted Post
At last I may say that I was sucsseful in solving the problems of my marklin TT 78461.
After gluing the tabs, reforcing the springs that drive the bridge and reshap of the locking tab of the bridge it is working perfectly well.
But it was not easy.


Can you send some photos of the reshaping of the locking tab, please
Take it easy . . . . or any other way you can get it !!!!
Offline mapi  
#18 Posted : 06 June 2023 15:03:41(UTC)
mapi

Portugal   
Joined: 30/05/2023(UTC)
Posts: 3
Location: Porto, Porto
hi

it was very simple. I gave it a slight rounded shape and I reduced slightly the overall thickness. Ir was very important also to the give a little more strength to the plastic springs that make contact between the central wheel with the geared wheel drived by the motor. To achieve this i put a small plastic card( less than a mm thicness) betewen the arch of the four springs and the middle point of it's anchorage.
It really works well now.
thanks 3 users liked this useful post by mapi
Offline Drongo  
#19 Posted : 07 June 2023 12:30:34(UTC)
Drongo

Australia   
Joined: 03/06/2008(UTC)
Posts: 1,221
Location: Sydney, NSW
Originally Posted by: mapi Go to Quoted Post
hi

it was very simple. I gave it a slight rounded shape and I reduced slightly the overall thickness. Ir was very important also to the give a little more strength to the plastic springs that make contact between the central wheel with the geared wheel drived by the motor. To achieve this i put a small plastic card( less than a mm thicness) betewen the arch of the four springs and the middle point of it's anchorage.
It really works well now.


Thank you very much. Do you think if I send the TT back to Marklin and explain to them to do this, do you think they'll do it. Rhetorical question - Of course they won't, as they say the TT is perfect. Cursing
Take it easy . . . . or any other way you can get it !!!!
Offline Alex H  
#20 Posted : 19 July 2023 11:37:06(UTC)
Alex H

United Kingdom   
Joined: 25/03/2017(UTC)
Posts: 107
Location: England, Devon
Having read the above, I am now wondering if, as a novice, I should include this in my layout. :)
Offline Drongo  
#21 Posted : 21 July 2023 15:01:04(UTC)
Drongo

Australia   
Joined: 03/06/2008(UTC)
Posts: 1,221
Location: Sydney, NSW
Originally Posted by: Alex H Go to Quoted Post
Having read the above, I am now wondering if, as a novice, I should include this in my layout. :)


If you do, it will be a very courageous decision
Take it easy . . . . or any other way you can get it !!!!
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