Setting CV's on Loksound 5 fitted to a Rails NER electric Autocar help please

[Badger boy]

I would appreciate any help from anybody out there in setting up the CV's on a Rails NER electric autocar fitted with a Wheeltappers Loksound 5 decoder as I'm a bit of a technophobe when it comes to CV's.

 

I have a Prodigy Express 2 controller and am trying to get the autocar running to my liking. I like to use 14 speed steps and to control acceleration and deceleration with the + or - buttons only and with no inertia. I have fiddled around with CV's 3, 4, 5, 6, 52 and 53 (set to 1, 2, 255, 0, 0 and 150 respectively) and can get it running smoothly at speed steps 4 and above but between 3 and 4 on both acceleration and deceleration there seems like a bigger step up or down so that on speed steps 2 & 3 it is very slow - nearly the same speed as just crawling on speed step 1.

 

Any suggestions would be most welcome.

 

I

[kev]

I have the same controller and use speed step 28 find I get better control so may be worth a try 

[34theletterbetweenB&D]

1 hour ago, Badger boy said:

I have fiddled around with CV's 3, 4, 5, 6, 52 and 53 (set to 1, 2, 255, 0, 0 and 150 respectively)

Try setting CV6 (mid speed) to 120, and the bottom end of the speed curve should become more linear.

[Badger boy]

Thanks Kev and 34 - using 28 steps does help although I prefer 14 steps for some reason - probably because I have about an 8 foot run from start to finish and want as few as presses as possible. Changing CV 6 to 120 has also helped to smooth it out but it does seem very slow at lower speed steps. I like to get to 'working speed' at about speed step 7 so any ideas on that would be appreciated - or am I chasing the impossible ? I do get a satisfactory result when I 'tune' my steam locos (non sound) so maybe it is just is this model or decoder

[34theletterbetweenB&D]

Increase the CV6 value, try 190, you might want to set CV2 to a higher value also, try 20; and then see if that makes a difference I don't know this decoder at all, but it may have a shallow gradient over the first few speed steps from your description.

 

Alternatively it may be the motor, requires plenty of current to get going. (I have a RTR OO loco with a well known typically fine motor - of which I have many other examples-  that responds in this way. Way different decoder settings - similar to what's suggested above were required to make it run in the style I want. It's done nearing 20 years set like this, doesn't heat up, fully reliable. I gather you are not keen on altering CV's, but this capability is present to enable performance adjustment to suit the user.)

[Badger boy]

Good egg 34 ! - that was spot on - changed to 190 and 20 as suggested and all just as I like it. Learning all the time about CV's. Many thanks.