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Offline Rwill  
#1 Posted : 29 July 2016 14:49:32(UTC)
Rwill

United Kingdom   
Joined: 04/05/2015(UTC)
Posts: 777
Location: England, London
Sorry for dumb questions.

I know that for two rail operation, marklin wheel sets are no good as they short out - but what of the other way round? Can you run two rail wagons on K track without changing the wheels?. My fuddled brain also recalls a problem with the flange depths of non M wheels on M,K or C track.
Offline RayF  
#2 Posted : 29 July 2016 18:02:35(UTC)
RayF

Gibraltar   
Joined: 14/03/2005(UTC)
Posts: 15,838
Location: Gibraltar, Europe
Originally Posted by: Rwill Go to Quoted Post
Sorry for dumb questions.

I know that for two rail operation, Marklin wheel sets are no good as they short out - but what of the other way round? Can you run two rail wagons on K track without changing the wheels?. My fuddled brain also recalls a problem with the flange depths of non M wheels on M,K or C track.


There is a difference in the depth of the flanges and also the back-to-back measurement, which is the distance between the backs of the wheels on either side. Some wheel-sets allow for the wheels to be slid along the axles to correct this. The flange depth will only be a problem on some really ancient wheels, and sometimes if the depth is very little it may be easier to derail on turnouts.

Some manufacturers manage to get a compromise wheel dimension which works for both 2-rail and 3-rail tracks. I have no problems with my Roco wheels, for instance, Others are more stringent, and in the case of my Lilliput wagons I always have to change the wheels to prevent derailing on turnouts. Piko are somewhere in between. Some wagons will be alright and others not.
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 jvuye  
#3 Posted : 29 July 2016 22:41:02(UTC)
jvuye

Belgium   
Joined: 01/03/2008(UTC)
Posts: 2,881
Location: South Western France
Originally Posted by: RayF Go to Quoted Post
Originally Posted by: Rwill Go to Quoted Post
Sorry for dumb questions.

I know that for two rail operation, Marklin wheel sets are no good as they short out - but what of the other way round? Can you run two rail wagons on K track without changing the wheels?. My fuddled brain also recalls a problem with the flange depths of non M wheels on M,K or C track.


There is a difference in the depth of the flanges and also the back-to-back measurement, which is the distance between the backs of the wheels on either side. Some wheel-sets allow for the wheels to be slid along the axles to correct this. The flange depth will only be a problem on some really ancient wheels, and sometimes if the depth is very little it may be easier to derail on turnouts.

Some manufacturers manage to get a compromise wheel dimension which works for both 2-rail and 3-rail tracks. I have no problems with my Roco wheels, for instance, Others are more stringent, and in the case of my Lilliput wagons I always have to change the wheels to prevent derailing on turnouts. Piko are somewhere in between. Some wagons will be alright and others not.


Ray is 200% right!!
Most two-rail axles will work on Märklin, **providing you adjust the inner space** (distance between flanges) to 13.8 mm (vs 14.3 mm in 2 rail)
The gauge to measure and adjust easily is here https://www.fohrmann.com/en/rail-gauge-h0.html
I even have had success with RP 25 style reduced flange wheels, but only on well laid C-track;
Hope this answers your question
Cheers

Edited by user 30 July 2016 07:13:41(UTC)  | Reason: Not specified

Jacques Vuye aka Dr.Eisenbahn
Once a vandal, learned to be better and had great success!
thanks 1 user liked this useful post by jvuye
Offline Hackcell  
#4 Posted : 01 August 2016 02:10:16(UTC)
Hackcell

Costa Rica   
Joined: 21/11/2013(UTC)
Posts: 521
I have no major issues using RP-25 wheels on my C tracks, the only thing I have to do is to adjust the distance between wheels and voilá.
Danilo Jiménez
Union Pacific and DB Cargo H0 models.
Märklin, Brawa, MTH and some Walthers cars (nobody is perfect!)
Pinball machines, jukeboxes and Horses.
Costa Rica, pura vida!!
thanks 1 user liked this useful post by Hackcell
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