Acceleration/Deceleration Delay

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bugsmasher		#1 Posted : 08 September 2016 16:05:27(UTC) Retweet
Joined: 07/09/2016(UTC) Posts: 48 Location: Michigan, Canton		Decoder manufacturers seem to program a minimal amount of acceleration/deceleration delay into their sound decoders. For example, ESU seems to set a default value of 32 within a range of 0-255. Why do manufacturers do this? For easy shunting, it would seem that there should be no delay (although this might not be quite authentic/realistic, especially for diesels).


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RayF		#2 Posted : 08 September 2016 16:51:54(UTC) Retweet
Joined: 14/03/2005(UTC) Posts: 15,839 Location: Gibraltar, Europe		Originally Posted by: bugsmasher Decoder manufacturers seem to program a minimal amount of acceleration/deceleration delay into their sound decoders. For example, ESU seems to set a default value of 32 within a range of 0-255. Why do manufacturers do this? For easy shunting, it would seem that there should be no delay (although this might not be quite authentic/realistic, especially for diesels). You can program the delay to zero if you wish, but why not just click on the tortoise icon when you want to shunt? This is what I do. Manufacturers program in a reasonable delay for realism, otherwise why bother to have the feature in the decoder? I often increase the delay to a higher value than that set at the factory as I like the gradual acceleration which is often difficult to reproduce manually. One must be careful not to overdo the braking delay, as it can then be quite tricky to not overshoot the platforms when arriving at a station!
		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.

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Minok		#3 Posted : 09 September 2016 01:40:37(UTC) Retweet
Joined: 15/10/2006(UTC) Posts: 2,311 Location: Washington, Pacific Northwest		Originally Posted by: bugsmasher Manufacturers program in a reasonable delay for realism, otherwise why bother to have the feature in the decoder? I often increase the delay to a higher value than that set at the factory as I like the gradual acceleration which is often difficult to reproduce manually. One must be careful not to overdo the braking delay, as it can then be quite tricky to not overshoot the platforms when arriving at a station! Yes, indeed, such as when one first operates a small motorized boat.. your brain needs to get used to the need to account for physics/ momentum as you don't initially realized that unlike a car, there are no brakes to step on when your in water. Train operators don't start their braking when they loco is near the stopping point, its a process that begins well before the train even enters the platform area. Ideally the 'crawl / ABV mode off' mode would disable the delays AND simultaneously remap the throttle so that its not linear anymore and that it takes a wider range of throttle movement at the low end to achieve the same speed, so one can more precisely control the low end speeds. Edited by user 13 September 2016 01:05:15(UTC) \| Reason: Not specified
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kiwiAlan		#4 Posted : 10 September 2016 20:04:49(UTC) Retweet
Joined: 23/07/2014(UTC) Posts: 8,103 Location: ENGLAND, Didcot		Originally Posted by: bugsmasher Decoder manufacturers seem to program a minimal amount of acceleration/deceleration delay into their sound decoders. For example, ESU seems to set a default value of 32 within a range of 0-255. Why do manufacturers do this? For easy shunting, it would seem that there should be no delay (although this might not be quite authentic/realistic, especially for diesels). You can turn off the delay if you wish, using one of the functions, or turn it off permanently by changing a CV.


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kimballthurlow		#5 Posted : 11 September 2016 08:19:43(UTC) Retweet
Joined: 18/03/2007(UTC) Posts: 6,668 Location: Brisbane, Australia		Originally Posted by: RayF ..... You can program the delay to zero if you wish, but why not just click on the tortoise icon when you want to shunt? This is what I do. Manufacturers program in a reasonable delay for realism, otherwise why bother to have the feature in the decoder? I often increase the delay to a higher value than that set at the factory as I like the gradual acceleration which is often difficult to reproduce manually. One must be careful not to overdo the braking delay, as it can then be quite tricky to not overshoot the platforms when arriving at a station! I have a lot of fun with this. I deliberately programme in long deceleration delays, so it takes some fore-thought to bring the passenger train to a correct stand. Kimball
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RayF		#6 Posted : 11 September 2016 11:23:20(UTC) Retweet
Joined: 14/03/2005(UTC) Posts: 15,839 Location: Gibraltar, Europe		Originally Posted by: kimballthurlow Originally Posted by: RayF ..... You can program the delay to zero if you wish, but why not just click on the tortoise icon when you want to shunt? This is what I do. Manufacturers program in a reasonable delay for realism, otherwise why bother to have the feature in the decoder? I often increase the delay to a higher value than that set at the factory as I like the gradual acceleration which is often difficult to reproduce manually. One must be careful not to overdo the braking delay, as it can then be quite tricky to not overshoot the platforms when arriving at a station! I have a lot of fun with this. I deliberately programme in long deceleration delays, so it takes some fore-thought to bring the passenger train to a correct stand. Kimball Yes that's true! Unfortunately I rarely get it exactly right, so I'm backing off the amount of delay that I set in my more recent purchases or conversions. I still like a long delay, but maybe not the maximum available!
		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.

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river6109		#7 Posted : 14 September 2016 17:14:27(UTC) Retweet
Joined: 22/01/2009(UTC) Posts: 14,715 Location: On 1965 Märklin Boulevard just around from Roco Square		ESU decoders have various settings you can choose, 1.) the distance and this is not reliable for some reason, had them all programmed to the right stopping point, closed down the ECoS and 3 days later activated it again and to my surprise most of the locos either overshot the stop point or didn't reach it all. so what happened there I've got no idea whether or not the locos haven't been running in either way you don't want to experience different stopping points every time to shut down your central unit. the second option is 2.) distance, although it doesn't give you the distance in meters you program it to the nearest value and this has been much more reliable, the 3rd option is ABC asymmetrical DCC signal, so fart I haven't figured out how this works. the earlier 60901 decoders didn't have the breaking distance I needed. so the loco had to be in top speed to arrive at the stopping point. John
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bugsmasher		#8 Posted : 20 September 2016 21:01:00(UTC) Retweet
Joined: 07/09/2016(UTC) Posts: 48 Location: Michigan, Canton		Originally Posted by: RayF Originally Posted by: bugsmasher Decoder manufacturers seem to program a minimal amount of acceleration/deceleration delay into their sound decoders. For example, ESU seems to set a default value of 32 within a range of 0-255. Why do manufacturers do this? For easy shunting, it would seem that there should be no delay (although this might not be quite authentic/realistic, especially for diesels). You can program the delay to zero if you wish, but why not just click on the tortoise icon when you want to shunt? This is what I do. Manufacturers program in a reasonable delay for realism, otherwise why bother to have the feature in the decoder? I often increase the delay to a higher value than that set at the factory as I like the gradual acceleration which is often difficult to reproduce manually. One must be careful not to overdo the braking delay, as it can then be quite tricky to not overshoot the platforms when arriving at a station! Personally, I like some delay on my own track. But it can be a problem on a club layout with many trains and different operators.


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