Surging in two spots on my track and don't know why help please
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Clean the track and test the power in the spots
Need more onformation. Size of your layout, type of track, running conventional or command, wiring, transformer power. Define surging! Every little bit of info helps.
Tried cleaning no luck an its on a mth sd70ace on a l shaped layout 4x11 with two loops and I'm running dcs power is a zw with track voltage fine all the way around and it will do it in con mode too but my other kline engine runs fine
And by surging I mean it speeds up real fast at two spots I just don't know I think it's something with the engine
I mean it speeds up real fast at two spots? Well if it was the engine why don't it run away.
OK, thanks for the info. When it surges, are the two spots on curves or straight sections? How far does the engine travel before before it returns to normal?
Yes it's on curve sections and it only does it basically till its out of the curve very short but strong burst of energy!!!
It sounds like a shift in voltage. A sudden spike in track voltage, say from 12VAC to 18VAC will cause an MTH engine to surge briefly before the cruise control compensates to reset the speed. The length of this surge, though is usually very short. Have you spot-checked your track voltage in various areas?
Is the section in a separate block? If so, also check the phasing (take a meter and check for a voltage between the center rail of block 1 and the center rail of block 2. If it's above zero, the blocks are out of phase. Normally, this would cause one power supply to short, but not always.
This is a strange problem. Hope this helps.
Yes I have checked voltage everywhere and it's all right around 18volts I don't what it is but it's really driving me nutz!!!!
Ok, what I think might be happening is you have a bare wire near or around one of your motors. When you enter the curve, the motors rotate, pushing and pulling the wires wrapped around them. A motor shell makes contact with a cut/worn wire causing the motor to surge until it breaks the connnection with the bare wire as it leaves the curve. I would open the shell and look at the wiring around the motors. You could be looking for a very small cut/abrasion in one of the wire coatings. Well, that my 2 cents worth, hope this helps.
Brian
I really am starting to think its something with the engine itself I will open it up and look around I did have the shell off to pack a new wick so maybe something is touching thanks for the ideas guys!!!!
