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Delph - Traction electrics sorted

Dave Holt

Entry posted by Dave Holt

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After the more than slight disappointment of the electrical issues described in my previous blog entry, I am pleased to say the the problems proved not too difficult to sort out. One or two of the comments suggested it didn't sound too bad, so you were right, thanks!

The dead sections of track were due to me not having connected them to the jumper cable to the next board! I thought I'd been very careful and systematic with the wiring, checking as I went, but obviously not as thoroughly as it should have been. Anyway, three additional wires solve it.

I couldn't actually find a fault with the platform release corss-over and I have concluded that it is a minor operational restriction due to the way I've powered the track from the crossing units of the points. This appears to cause a problem if the cross-overs at both ends of the run-round loop are reversed at the same time. In practice, this shouldn't cause a problem and just requires the operator to make sure the platform cross-over is returned to normal before completing the run round process. Since this cross-over is operated by a local ground frame (released from the signal box), any engine using it would have to wait, once clear, for the fireman to return the crossing to normal and lock it, then walk back to the loco and climb on board. This pause gives sufficient time for the signalman to change the other end of the loop before the loco moves off to complete the run-round.

I still can't get the signals to operate, so a bit more investigation of the switching arrangements will be required.

At least all the track is now powered and all sections accessible. Phew!

During test running today, I was pleasantly surprised that my ex-LMS Crab 2-6-0 was able to successfully negotiate the very tightly curved mill siding - which is more than can be said for the BR Standard Class 2, 2-6-2 tank, whick derailed the pony trucks. Too striong side control springs, i think.

 

Dave.

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Dave Holt

Tony,

Thanks for your confidence!

I've just spent several happy hours running stuff around the layout on DCC. Also commissioned the AJ uncouplers using the external variable voltage DC supply, currently set at 20 volts, although 15 seemed to work just as well. All magnets seem to work except one - in the mill siding. At present, I'm not sure if it is an electrical problem, a faulty coil or just because being on a very tight reverse curve, the pole piece might not be directly under the vehicle dropper.

Still, relatively few problems to sort out so, overall, I'm very pleased at present.

 

Dave.

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