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Author Topic: Servo operated points  (Read 3507 times)

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Offline kirky

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Servo operated points
« on: June 30, 2012, 03:02:27 PM »
I wonder if anyone has seen this?

I searched for servo operated points and came across this which intrigued me, because I thought that cannot work, it's just too simple....

Install a servo


So I thought I'd try it and see what happens, and to my astonishment it works.

I would have thought that the double sided tape is the problem, but mine seems to work fine.
I'll try and post a video of my test later.

Cheers
Kirky
« Last Edit: June 30, 2012, 04:04:19 PM by kirky »
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Offline upnick

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Re: Servo operated points
« Reply #1 on: June 30, 2012, 03:40:48 PM »
I wonder if anyone has seen this?

I searched for servo operated points and came across this which intrigued me, because I thought that cannot work, it's just too simple!
Install a servo]
[url=http://www.youtube.com/watch?v=d9PMo4uIGTI#]Install a servo

[/url]

So I thought I'd try it and see what happens, and to my astonishment it works.

I would have thought that the double sided tape is the problem, but mine seems to work fine.
I'll try and post a video of my test later.

Cheers
Kirky


Very  interesting Kirky   :thumbsup: great method of operating points  ;)

The link you  posted doesnt work  .... i  got it going   &  .......  i  hope this is the one you meant to leave   ;)

http://www.youtube.com/watch?v=d9PMo4uIGTI#
« Last Edit: June 30, 2012, 03:43:00 PM by upnick »

Offline kirky

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Re: Servo operated points
« Reply #2 on: June 30, 2012, 03:51:14 PM »
Yep, that's it nick.
I #think# I've mended the link now.
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Offline kirky

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Re: Servo operated points
« Reply #3 on: June 30, 2012, 06:57:54 PM »
Ok, I've managed to video our version of the above. I just used double sided tape from Aldi. I didn't bother with the plastic square super glued under the board but the wire is thicker and is a good fit into the servo arm. It's surprisingly rigid and the tape seems to hold very well....... For now.
I should point out that the point is a peco point with the spring removed.
Here's the vid.... Hopefully;

Servo operated ngauge point v2


Cheers
Kirky
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Offline Malc

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Re: Servo operated points
« Reply #4 on: June 30, 2012, 08:39:32 PM »
Thanks for the video Kirky, I tried the servo method but mounted it sideways. I used a forstner drill bit to excavate a 1/4" deep pit under the point, and using the servo on it's side with the 2 arm lever poking through the board. Your method does look easier.

Malc
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Offline mojo

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Re: Servo operated points
« Reply #5 on: June 30, 2012, 08:59:05 PM »
How does the cost of the servo method compare to the cost of a Peco point motor?

Offline upnick

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Re: Servo operated points
« Reply #6 on: June 30, 2012, 09:02:03 PM »
How does the cost of the servo method compare to the cost of a Peco point motor?


Hi Mojo,   

Here's an example of a servo  on  ebay  Futaba are one of the leading manufaturers of  R/C    equipment.

http://www.ebay.co.uk/itm/S3003-Standard-Servo-for-RC-Futaba-Car-Boat-Airplane-/290559378542?pt=UK_ToysGames_RadioControlled_JN&hash=item43a6b0446e

Offline kirky

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Re: Servo operated points
« Reply #7 on: June 30, 2012, 09:44:39 PM »
How does the cost of the servo method compare to the cost of a Peco point motor?
I've just bought a dozen sg90's for twenty quid, from China including postage. Thats 1.67 a servo!
The down side is you need a control system, for each motor. Merg do one that controls four servos for six ukp. We are building our own with relays to change the point polarity, but the cost is slightly more.
Still,  the price is comparable if not better.
Cheers
Kirky
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Offline Malc

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Re: Servo operated points
« Reply #8 on: June 30, 2012, 11:16:59 PM »
How does the cost of the servo method compare to the cost of a Peco point motor?

The one I bought was about 12 from Bromsgrove models. It includes a DCC decoder along with the manual switch PCB that also has indicator LEDs fitted.

https://clarahost.clara.net/www.bromsgrovemodels.co.uk/pd1291914404.htm?defaultVariants={EOL}&categoryId=86
Malc
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Offline kirky

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Re: Servo operated points
« Reply #9 on: July 01, 2012, 12:02:29 PM »
Ok, so this is v3.
I was wondering why the original video uses a square of plastic under the board. My not vey logical mind was unable to work it out without seeing it. So I did a third version.
The plastic with hole simply acts as a pivot point, at least in my non technical understanding.
My new video shows a peco point with a spring, and pivot.
Since the speed of the servos is set to max, we are looking at simplifying the control board to not include a speed adjustment, which will make the construction a bit simpler. Still used double sided tape to mount the servo.

Here's the vid;

Servo operated n gauge points V3

Cheers
Kirky
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Offline kirky

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Re: Servo operated points
« Reply #10 on: July 11, 2012, 12:16:42 AM »
I think I've found he link, it was entitled 'servo operated points'

http://www.ngaugeforum.co.uk/SMFN/index.php?topic=6335.msg71755#msg71755

We have just bought a load of components to make up the servo control boards.
It's a job for the next few weeks I think.

Cheers
Kirky
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Offline kirky

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Re: Servo operated points
« Reply #11 on: July 11, 2012, 12:17:55 AM »
Oops, I posted this in thewrog thread, sorry.

Kirky
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