Model Railway Forum banner

Hornby's Troubled 08s.

2202 Views 7 Replies 7 Participants Last post by  spongebob
I have recently bought two of Hornby's DCC ready 08s. must admit they are great locos to run, but after a short time they both start shrieking very loud. I have oiled all of the moving parts on both locos, but still not solved the problem.
Has anybody else had this with the 08s. and any suggestions on how to cure it?
I've had layouts and several hundred locos since 1956, with plenty of problems to solve, but this one has beat me!
1 - 1 of 8 Posts
It sounds to me is a problem of brushes.
If I am right, they are using Ringfield type motors and the noise as you
described does like ones I fixed before.
One or both brushes constantly hit(s) the slots in the motor commutator.
My solution was simply to swap the two brushes.
I have met three similar problems and sorted out all three by swapping
the pair of brushes. It does no harm at all to try it in a ringfield type motor.
But if it is not a ringfield type motor, you may have to file down the meat of
the brushes a bit to sort it.

You also need to do a good clean of the slots in the motor commutator carefully with a sharp toothpick
(they'll be full of carbon from the brushes if the noise was truly caused by brushes).

Clean the commutators copper face as well as you can with a cotton bud soaked in
thinners or alcohol. Be careful if you use thinners as plastics don't like them.

If you have some some super fine wet and dry it can be used to polish the face of
the commutator until it shines like a mirror. Use 1200grit or better glued to an ice
lolly stich for this, and be gentle and "even" in pressure. Polishing the armature
face evenly will improve the efficiency of the motor a lot.

Before you swap the brushes or after file them, it is also worth giving them a good clean - soak in meths for a
while and then give them a good clean with detergent - let dry totally (overnight in
a warm place).

Please kindly let me know if this solve the problem. I will be very glad to hear a good news.
See less See more
1 - 1 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.