 Joined: 21/04/2014(UTC) Posts: 122 Location: ENGLAND
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Is there a diagram which describes the geometry of the Märklin rail parts?
There is nothing I can see in the recent Märklin catalogues.
If Ive got this right most curved tracks need 12 of them to make a complete circle, dependant on the radius, but I also need to know how the various straight track lengths relate to each other.
Thanks
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 Joined: 04/08/2015(UTC) Posts: 74 Location: Stockholms Lan, Stockholm
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The length in mm is the last digits in the part no 24188 is 188 mm 24172 is 172 mm , with curves the two last digits denotes degrees 24430 is 30 degrees, the 4 in the middle stands for R4 would be 24130 if R1
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 4 users liked this useful post by Henrik Schütz
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 Joined: 04/06/2012(UTC) Posts: 76
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Originally Posted by: oranda  Is there a diagram which describes the geometry of the Märklin rail parts?
There is nothing I can see in the recent Märklin catalogues.
If Ive got this right most curved tracks need 12 of them to make a complete circle, dependant on the radius, but I also need to know how the various straight track lengths relate to each other.
Thanks The full Marklin catalog shows many diagrams about how the various Marklin C-track (and K-track) pieces work together. In the new 2017-2018 catalog start on pp. 214-215. You can also Google "Marklin C-track geometry" and there are a number of reference images posted. As already noted, on the straights the last 3 digits show the lengths in mm. On the curves the 3rd digit shows the "radius" (243xx = R3, 244xx = R4, etc.), the last two digits show the degree of the curve (24x30 = 30-degrees). You are correct that the "standard" curved track degree of curve is 30-degrees, meaning to make a full circle (360-deg) you need 12. But there are other compensating curves as well - for use as the complimentary curves to parallel the two tracks from a turnout (switch) (24224 = R2, 24.3-degrees for the regular turnouts; 24912 = 1,114.6mm radius, 12.1-degrees for the wide-radius turnouts) these can also be used as different-degree curves as needed. In the smaller radii (R1, R2 & R3) there are smaller degree compensation curves (24206 = 5.7-degrees (almost "6"), 24207 = 7.5-degrees ... 48 of those would make a full circle too!) - Bill |
ETE - Swiss Era III - BLS - Brig Station |
2 users liked this useful post by midwestbls
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Joined: 15/10/2006(UTC) Posts: 2,319 Location: Washington, Pacific Northwest
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Originally Posted by: oranda Is there a diagram which describes the geometry of the Märklin rail parts?
The track type (C/K/M/etc) of course is needed too. Something like this?  |
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4 users liked this useful post by Minok
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 Joined: 18/03/2007(UTC) Posts: 6,763 Location: Brisbane, Australia
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HO Scale - Märklin (ep II-III and VI, C Track, digital) - 2 rail HO (Queensland Australia, UK, USA) - 3 rail OO (English Hornby Dublo) - old clockwork O gauge - Live Steam 90mm (3.1/2 inch) gauge. |
6 users liked this useful post by kimballthurlow
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 Joined: 04/02/2011(UTC) Posts: 3,555 Location: Paris, France
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Originally Posted by: oranda Is there a diagram which describes the geometry of the Märklin rail parts?
There is nothing I can see in the recent Märklin catalogues.
If Ive got this right most curved tracks need 12 of them to make a complete circle, dependant on the radius, but I also need to know how the various straight track lengths relate to each other.
Thanks Good Evening For those interested in C Track geometry may I suggest reading this topic in this forum: C Track TopicsAlso you can create special tracks (straits with specific lengths or curve combinations / special angles) by - cutting the track with a diamond disk and nicely filing and - assembling the cutted tracks with hotmelt glue so as to obtain a new geometry C Rail with 2 C Track ends - wiring the 3 connections of glued rail. The resulting new C Rail section may be inserted anywhere in your C Track Layout Cheers Jean |
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3 users liked this useful post by JohnjeanB
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Joined: 01/06/2016(UTC)
Posts: 2,465
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Originally Posted by: oranda Is there a diagram which describes the geometry of the Märklin rail parts?
There is nothing I can see in the recent Märklin catalogues.
If Ive got this right most curved tracks need 12 of them to make a complete circle, dependant on the radius, but I also need to know how the various straight track lengths relate to each other.
Thanks I just read your topic and here is a link to a brochure Issued by märklin on its homepage. But I guess you only get access to it via the German homepage version. Maerklin issues plenty of informations, but mainly in German language and only with access at the German homepage. https://www.maerklin.de/...C3%A4nzungspackungen.pdfhttps://www.bogobit.de/track/http://www.henningvoosen...nloads/cgleisrechner.htmAt the first sigth I hope this is allrigth to you.
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2 users liked this useful post by TEEWolf
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Joined: 10/02/2006(UTC) Posts: 3,997
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Originally Posted by: kimballthurlow The Copyright is bogobit, on each page... I had not seen that table before, and I notice lengths that cannot be achieved are listed at the end. I tried some of them in my track calculator and found many of those 'impossible' lengths that can be achieved to within less than 0,5mm For example 798mm can be obtained exactly with: 24077 (x2) 77.5 24064 (x10) 64.3 so I suspect that the table is not exhaustive. My track length calculator can be obtained at: http://cabin-layout.blogspot.com/2002/05/track-length-calculator.html |
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3 users liked this useful post by DaleSchultz
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Joined: 10/02/2006(UTC) Posts: 3,997
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Originally Posted by: TEEWolf That calculator is limited to 9 pieces only. So the page declares that 1199mm cannot be solved. It needs 11 pieces and can be solved exactly: 24188 (1) 188.3 24172 (3) 171.7 24071 (7) 70.8 |
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Joined: 01/06/2016(UTC)
Posts: 2,465
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Originally Posted by: DaleSchultz Originally Posted by: TEEWolf That calculator is limited to 9 pieces only. So the page declares that 1199mm cannot be solved. It needs 11 pieces and can be solved exactly: 24188 (1) 188.3 24172 (3) 171.7 24071 (7) 70.8 Did you also check the complete installation routine, which you get scrolling down the homepage to the bottom? It is a ZIP file. After expanding you get a CGleisrechner.exe file. For my understanding you get more than these 9 possibilities there.
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Joined: 10/02/2006(UTC) Posts: 3,997
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Originally Posted by: TEEWolf Originally Posted by: DaleSchultz Originally Posted by: TEEWolf That calculator is limited to 9 pieces only. So the page declares that 1199mm cannot be solved. It needs 11 pieces and can be solved exactly: 24188 (1) 188.3 24172 (3) 171.7 24071 (7) 70.8 Did you also check the complete installation routine, which you get scrolling down the homepage to the bottom? It is a ZIP file. After expanding you get a CGleisrechner.exe file. For my understanding you get more than these 9 possibilities there. Good. I went by the first paragraph that states that it uses up to 9 pieces. Quote:Der C-Gleisrechner errechnet alle kombinierbaren Gleislängen, die mit 9 geraden märklin C-Gleisen erreicht werden können . I do not see more than one calculator. It goes on to say that there is no solution for 1199mm Quote:Für eine Länge von 1.199 mm gibt es keine Gleiskombination |
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Joined: 03/02/2016(UTC)
Posts: 490
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Originally Posted by: DaleSchultz I had not seen that table before, and I notice lengths that cannot be achieved are listed at the end. I tried some of them in my track calculator and found many of those 'impossible' lengths that can be achieved to within less than 0,5mm I usually work with 2 - 3 mm wiggle room. It works fine. 0,5 mm difference is an acceptable match in my eye.
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Joined: 01/06/2016(UTC)
Posts: 2,465
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Originally Posted by: DaleSchultz Kombinierbaren Gleislängen, die mit 9 geraden märklin C-Gleisen erreicht werden können
I do not see more than one calculator.
It goes on to say that there is no solution for 1199mm
Für eine Länge von 1.199 mm gibt es keine Gleiskombination Dale, I think it is up to everybody himself calculating his track combinations. I only suggest tools to him making his life perhaps easier. I do not feel I have to sell this track calculator. You also may use the 2 tables regarding to track length, etc. at the links in my post #7 too. Good tracking times  TEEWolf
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Joined: 10/02/2006(UTC) Posts: 3,997
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I never said anyone should use any particular calculator either, just pointing out limitations that I saw in one of them, and responding to other statements.
The two tools are hardly comparable, one is simple, static and incomplete table (and is platform independent), the other is comprehensive, handles K, C and M tracks and also calculates lengths at various angles and ability to control tolerance limits, but needs Windows. I get zero benefit from anyone using mine.
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