My issue with solenoid point motors is exactly that they can damage the point. With copper clad points I want to stress them as little as possible.
Cost is also an issue, I've again got a target of under £10.00, for this cakebox, not including stock.
Peco point motors are about £6.00, Tortoise style motors £10-£18. This homemade servo type under £2.00. I've not costed the 3D print but this should be pence
If you wish you can use servo type with a resistor and use a simple dpdt switch this means the motor is powered all the time but the resistor drops most of the power. Not ideal but simple.
I intend to use an Arduino, the micro version cost about £2.00 and will control up to 17 servos!
Space wise unit is 45mm wide x 38 deep x 28mm Height, not including linkage wire.
I need to get thinner piano wire going to try 0.7mm . Thinner wire equals less stress on the point.
I am going to ft these under the board, had originally allowed 1" so just need to reset the gate on the saw
Linkage wire on these servos works exactly the same way as Cobalt slow speed motors in that the wire flexes.
Generally, if you are using sprung points (i.e. Peco) best to remove the spring.
Looks like its coming along nicely. I must confess I've been tempted to try using servos re point operation, I've always used the Peco version to date, and while these are pretty effective, at the same time they are a bit on the powerful/aggressive side, and as such, I've suffered one or two damaged point motors in the past, ie due to the return spring popping out, never to be found again, and even when I did have a spare spring to hand, I replacing it was a tricky if not impossible task.
I guess therefore that slow operation is therefore perhaps better, also more realistic, and as such Tortoise motors are also ideal, although the only drawback with these is that they are a bit cumbersome ie they need a fair bit of location space, and are not exactly cheap into the bargain. So am I correct to assume that your point motors will be located under the base, also how exactly will the linkage to the points work?