[Makemineadouble]

QUOTE Doug, 7mm bus? You probably robbed your local power station.

No the cheapest copper earth wire available. All houses in South Africa have an earth leakage system because of the frequent lightening storms. This makes excellent bus wire, and it's strong and dos'nt need to have the sheath stripped when you add a dropper.

 

[Branchliner]

Thanks for responses, P4me is correct, The current (no pun intended) track clips have something wired across the A and B strips, presumably an RF filter. The older ones do not.

Branchy

 

[homeofoo]

Hi! Old Hornby 3 pole motors can be replaced by 5 pole versions if you can track them down.Major problem in good running is also likely to be the steel wheels on the older locos.
Regards.
John.