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Offline diesel  
#1 Posted : 22 March 2006 14:06:16(UTC)
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diesel

Australia   
Joined: 03/10/2005(UTC)
Posts: 284
Location: Australia
Very often I see speed curves mentioned but have never had a full understanding.
Would appreciate comments regarding them and what can be achieved by changing them and to which position.
regards
diesel
Ecos 50200, Software 4.1.2 Marklin HO K track, EcosBoost, Traincontroller Gold V9.0,B2, All track power via EcosBoost Separate programing siding. Decoders- Lokpilot V2,Lokpilotv3, Lok V4, LoksoundV4, Loksound V5, Marklin MFX and Marklin Fx. Internet Exlporer 11.0, Win 7
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Offline dudok12  
#2 Posted : 22 March 2006 14:40:57(UTC)
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dudok12


Joined: 25/08/2004(UTC)
Posts: 152
Location: Eindhoven,
Hi diesel,

Depending on the type of decoder, you may be able to change the speed curve. You can visualize this as a table, in which the decoder speed steps are mapped to motor speed (up to 100%).

For instance, if your decoder would have 10 speed steps, instead of having a lineair speed curve to 100% at speed step 10 and 10% increments, you could decide to set speed step 10 to 50%, and equal increments of 5% in the lower speed steps, or you could decide on a non-lineair curve, if that fits the lok better.

So, by manipulating the speed curve you change the driving characteristics of the lok, which is nice. OTOH, in Marklin 6090* decoders you can set the max speed and accel/decel speed and that may be all the tuning you need...

HTH, Bernhard
IB since 2000. Latest loc aquisition: 37554 BR 55 a long time ago...
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Offline Sander van Wijk  
#3 Posted : 22 March 2006 17:33:31(UTC)
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Sander van Wijk

Netherlands   
Joined: 20/04/2003(UTC)
Posts: 2,248
Location: Amsterdam, Netherlands; Göteborg, Sverige,
A little addition to Bernhards (very good) explanation: the reason for choosing a non-lineair speed curve could for example be to have smaller speedsteps at lower speeds for a shunting engine to perform the shunting work in a smoother way. Or, on the other hand: to adjust and control the high (or a little higher) speed of an ICE, it could be nice to have smaller speedsteps at maximum speed.
Sander
---
Era I(b): K.Bay.Sts.B. and K.W.St.E.
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Offline McLae  
#4 Posted : 22 March 2006 19:53:26(UTC)
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McLae


Joined: 16/07/2002(UTC)
Posts: 1,575
Location: DeSoto (Dallas area), TX
Speed curves are for the digital rivit counters.biggrin

Most decoders have decent speed settings. You may need more adjustments to starting amperage (to get moving at speed 1) or top speed (goods/shunter/passenger Lok).

To me, speed curves and custom sounds are what you change after everything else is 'done' on the layout and all your Loks are running ok. But that's just me.[:I]
The McLae
IB digital, DB, OBB, SBB epII-V
Providing a home for little lost 'Gators
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Offline perz  
#5 Posted : 22 March 2006 20:05:21(UTC)
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perz

Sweden   
Joined: 12/01/2002(UTC)
Posts: 2,578
Location: Sweden
Quote:
[size=1" face="Verdana" id="quote]quote:Speed curves are for the digital rivit counters.

But you create the need to change them if the default ones are bad.
I do not like the speed curves of my mfx C-sine locos. Is there a way to change it if the only control units you have access to are a 6021 and a Mobile Station?
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Offline McLae  
#6 Posted : 22 March 2006 22:30:42(UTC)
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McLae


Joined: 16/07/2002(UTC)
Posts: 1,575
Location: DeSoto (Dallas area), TX
Option 1, find a friend with a Lokpilot Programmer setup.

Option 2, Sit down with a calculator and define the speed settings yourself, then load each CV one at a time. (I think you can do this with a 6021, but it is very messy)

Option 3, buy your own Lokprogrammer.
wink
The McLae
IB digital, DB, OBB, SBB epII-V
Providing a home for little lost 'Gators
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Offline perz  
#7 Posted : 22 March 2006 23:15:54(UTC)
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perz

Sweden   
Joined: 12/01/2002(UTC)
Posts: 2,578
Location: Sweden
Quote:
[size=1" face="Verdana" id="quote]quote:
Option 1, find a friend with a Lokpilot Programmer setup.

Option 2, Sit down with a calculator and define the speed settings yourself, then load each CV one at a time. (I think you can do this with a 6021, but it is very messy)

Option 3, buy your own Lokprogrammer.


OK, thank you. Option 2 is doable if I only know where I find the information about the appropriate CVs. After all, this is something I will probably just do once per loco, so why buy an expensive special tool for it?
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Offline diesel  
#8 Posted : 22 March 2006 23:46:30(UTC)
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diesel

Australia   
Joined: 03/10/2005(UTC)
Posts: 284
Location: Australia
Thanks for all the feedback.
I will do a few adjustments to some of my engines. The lok programmer will certainly make the job easier.
Diesel
Ecos 50200, Software 4.1.2 Marklin HO K track, EcosBoost, Traincontroller Gold V9.0,B2, All track power via EcosBoost Separate programing siding. Decoders- Lokpilot V2,Lokpilotv3, Lok V4, LoksoundV4, Loksound V5, Marklin MFX and Marklin Fx. Internet Exlporer 11.0, Win 7
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Offline hqstu  
#9 Posted : 23 March 2006 00:38:35(UTC)
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hqstu

New Zealand   
Joined: 12/04/2002(UTC)
Posts: 429
Location: Hamilton, New Zealand
The new line of (ESU based) decoders do seem to benefit from some adjustments, not only to speed curves, but also to motor parameters such as inertia constants etc. If you do purchase an actual ESU brand decoder, either mfx or std, then tinkering is almost a must for smooth running with marklin motors. If you going to be getting significant numbers of new loks or decoders, then a lok programmer is very handy. A few of us locals split the cost between us.

60902 decoders, well they are near perfect out of the box and are still hard to beat in terms of pure running characteristics...
Cheers

Stuart
New Zealand
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Offline Hemmerich  
#10 Posted : 23 March 2006 01:40:30(UTC)
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Hemmerich


Joined: 15/04/2003(UTC)
Posts: 2,734
Location: ,
Quote:
[size=1" face="Verdana" id="quote]quote:Originally posted by McLae
<br />Option 1, find a friend with a Lokpilot Programmer setup.

Option 2, Sit down with a calculator and define the speed settings yourself, then load each CV one at a time. (I think you can do this with a 6021, but it is very messy)

Option 3, buy your own Lokprogrammer.
wink


Option 4, simply use your CS and change it by "just pushing one button". biggrin

Regards,
Lutz

PS: I wonder how a 6021 can be used to change CV's above 80 or even 255. Cool
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Offline hqstu  
#11 Posted : 23 March 2006 12:15:06(UTC)
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hqstu

New Zealand   
Joined: 12/04/2002(UTC)
Posts: 429
Location: Hamilton, New Zealand
AFAIK you cannot change CV's above 79 with a 6021, right in the middle of the speed curve cv's.
Cheers

Stuart
New Zealand
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Offline perz  
#12 Posted : 23 March 2006 21:51:07(UTC)
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perz

Sweden   
Joined: 12/01/2002(UTC)
Posts: 2,578
Location: Sweden
Option 4: Use the CS you don't have...[V]

But is there a specification somewhere? Sending some codes to a loco is not that difficult after all. With a PC and a booster you can do it. The problem is to know what codes to send.
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