Slow down a can motor

[Ghutchi1]

Hi,

I have just replaced the motor in an 0-4-0 tank with an X2258 can motor and I find it is too fast for a shunter, is there a simple way to make the motor run slower so it is more consistent to its class. I am running the loco on DCC.

Thanks.

Geoff.

[96RAF]

Slowing the motor by say introducing a hefty wattage low value resistor wont improve the slow running, what you need is to alter the gearing, which is not so simple a task.

 

There was a post on the old RM Web forum years ago of a successful conversion to install the existing motor horizontally and introduce an intermediate laygear mounting it all to a plasticard 'gearbox'.

 

It may be possible to fit the newer 0-4-0 motor as it has been noted although they look the same they seem to run more controllably.

[RDS]

I thought I had read somewhere that you could alter the top speed in DCC by adjusting a CV?

[96RAF]

You can limit V-max but that doesnt improve the motors slow running characteristic.

[Howbi]

@Ghutchi1...........assuming you have used the same decoder in the loco now with the new can motor is it possible that certain CV's are incorrectly set for the new motor.......ie CV2 start voltage & CV3 acceleration/media/tinymce_upload/89609120a34c2edecad1d56f4d7895f0.jpg

[Rog RJ]

What decoder are you using?  If it's the basic Hornby R8249 decoder then the only real adjustments available are the acceleration CV 3 and deceleration CV 4.  Adjusting CV10, the motor feedback control, may help slightly.  More advanced decoders such as the Hornby Sapphire and many other makes, have more motor control CVs available.

[Ghutchi1]

Thanks all for the replies, I am using a DCCConcepts decoder, after reading through these replies I did some searching for the CV setting values for this decoder and found information on the setting of it.

@Raf96, thanks for the pointer to CV5, that was a good start and did indead slow down that max speed, which was what I was looking for initially, (it was going around at twice the speed of the other tanks).

@Howbiman, thanks for the table, playing around with the AR and DR CV's made a big difference to the start and stop running speed, now it doesn't try to take off at full speed and instantly stop.

@Roj, not sure what the CV10 does exactly, CV3 and CV4 seemed to make it work much better, would be good to know a bit more about CV10 though.

I am very new to DCC, (since July), very excited about it though, I appreciate all the assistance provided through the forum, there are a lot of knowledgable people here.

Thanks for your help, and may you have a happy new year.

Geoff.

[Fozzy Bear]

Have a read through this

http://www.dccwiki.com/Back_EMF