(I don't really know where I should put this...)
I am after a couple of photographs, please.
I'm writing a small section for the forthcoming Handbook - on solenoid point motors - and would like to include photographs of the following methods of controlling them:
1) the "electric pencil" and stud method.
2) the passing-contact switch method (the type that looks a bit like signal box levers)
If anyone out there uses either of these methods on their layout, would you please DM me and I can let you know what I'm after.
Many thanks
How about this method?
A moving metal 'arm' with limit stops and contacts in the panel.
You move the arm to the desired location and then press it down to activate the solenoid point motor.
As well as switching the point it also indicates the direction of the point on the panel.
The isolating rails are operated by the slide switches seen on the right. When isolated the line on the panel is broken, when not isolated the line on the panel is complete.
I should also mention that solenoid point motors can also be switched using a SPST (two-way toggle) switch rather than a passing contact switch.
But to do this each motor needs to be wired with a capacitor and a couple of diodes.
Another possibility is a centre-off biassed switch: (on)-off-(on), though unlike a passing contact switch it does not show the last used position as the dolly springs back to the centre when released.
It is much the same as Brian's toggle switch + push button but with the advantage of using just one switch but disadvantage of not being self-indicating.
It is probably too obscure to warrant inclusion.
I've a feeling that's what Brian meant, Graeme. A Single Pole single throw switch (SPST) wouldn't work as it's simply an on/off switch, a centre off one of the type you describe would, I have used that sort on my TTe layouts.
Quote from: GraemeD on February 25, 2021, 21:59
Another possibility is a centre-off biassed switch: (on)-off-(on), though unlike a passing contact switch it does not show the last used position as the dolly springs back to the centre when released.
It is much the same as Brian's toggle switch + push button but with the advantage of using just one switch but disadvantage of not being self-indicating.
It is probably too obscure to warrant inclusion.
I already have photos of that method which is why I haven't asked for any. :)
(it's how I do it on Angst!)