Hornby Class 47 Ringfield Motor

[Keith Kemp]

I have a Ringfield motor which will not start on its own but runs if I give it a helping hand. any idea what the problem might be, please?

[Trainshed Terry]

I have a Ringfield motor which will not start on its own but runs if I give it a helping hand. any idea what the problem might be, please?

 

That sounds like weak magnets to me. It all depends on the age of the model.

 

Terry

[royaloak]

Does the motor get quite hot when running as that is another sign of weak magnets.

[Keith Kemp]

Thanks Guys. The motor doesn't get particularly hot and I have let it run for quite a long time on a 'rolling road'. It still needed quite an energetic spin to persuade it to run again.

Keith

[Suzie]

Sounds to me a bit like dirt in the commutator shorting out one of the poles. Is there sparking?

[JeremyC]

Could be one of the armature windings is open circuit, though in that case it might self start in certain positions.

[RAF96]

On the rolling road all it has to do is turn the rollers whereas on the track it has todrag its own weight around. I had a Class 56 that ran smooth as silk on the RR but wouldnt go without assistance from the hand of dog on the track.

 

I tried a neo magnet but it proved to be so notchy as not to run under half throttle so in the end I bought a new bare ringfield housing c/w magnets from Peters Spares for little money.

 

​Rob

[tamperman36]

You could start with a basic motor service, begin by removing, checking and cleaning the carbon brushes. Next remove the cover over the commutator and then gently give it a clean. You can either use an electrical cleaning fluid or a light rub with fine sand paper or glass fibre pencil. Once done reassemble and lightly lubricate the motor bearings and test both loaded and unloaded, if the fault persists then the problem is within either the winding or magnet thus will require a replacement from one of the Hornby spares suppliers.

[stewartingram]

I have a Ringfield motor which will not start on its own but runs if I give it a helping hand. any idea what the problem might be, please?

 

Where are you based?

 

Stewart