Sprung points

Do you have a problem? Here is the place to appeal for help
Post Reply
Maple
Trainee Fireman
Trainee Fireman
Posts: 171
Joined: Sat Jun 29, 2013 3:17 pm
Location: Bournemouth

Sprung points

Post by Maple » Sun Jun 01, 2014 11:49 am

Hi all

Was after some advice, i'm designing/building my new line and have decided on a dog bone shape. But i don't want double tracks on the the main straight as i don't think this looks right for narrow gauge. I am thinking of doing sprung/ automatic electric points. has anyone tried this before with any success? Any advice/knowledge would be great.

Oh its 16mm scale on 32mm track.

Cheers

Ben

User avatar
andymctractor
Trainee Driver
Trainee Driver
Posts: 604
Joined: Fri Feb 01, 2013 12:03 am
Location: Suffolk, UK
Contact:

Post by andymctractor » Sun Jun 01, 2014 2:11 pm

If, using Peco sm 32 points at least, any train leaving the straight section onto the loop would take the route set by the point but on returning through the same point on the other leg would push the blades over. Without any springing or other kind of control the next train leaving the straight section onto the loop would take the route set by the last train in the other direction. If this is acceptable it would be much simpler than setting up springs or other means to return the point blades to a desired route.
My main concern with the idea of springs is that when pushing the blades over it is usually the first vehicle in a train that does the pushing and this is usually a heavy loco. If the blades are sprung, all axles on the train would need to be robust enough to resist being pushed aside by the action. A very delicate balance in any spring would have to ensure there is enough umph to move the blades but not so much that the lighter stock gets derailed.
I think some kind of additional point control would be much simpler than springs.
Maybe I'm just a little lazy? :shock:
Regards
Andy McMahon

If it moves, salute it.  If it doesn't move, paint it. (RN sailors basic skills course 1968)

User avatar
tom_tom_go
Chairman
Chairman
Posts: 4300
Joined: Wed Feb 23, 2011 3:08 am
Location: Kent, UK
Contact:

Post by tom_tom_go » Sun Jun 01, 2014 2:47 pm

Hi Ben,

I am using the same track as you and have sprung points so that they always are set in the same position every time. This is useful on a dog bone as the trains will always go the same way round.

If your line is raised you can simply put a bolt through the centre of the draw bar of the point and attach a spring. The other side of the spring is the screwed in place after you have tinkered with the amount of tension you require for the point to move back into place.

I have had this set up for a couple of years now outside with no issues even with rolling stock that is not weighted.

User avatar
TonyW
Driver
Driver
Posts: 1223
Joined: Fri May 16, 2008 9:25 am
Location: North Wales
Contact:

Post by TonyW » Sun Jun 01, 2014 5:19 pm

Or with no moving parts...
Image
Image
Tony Willmore
Rhos Helyg Locomotive Works: http://www.rhoshelyg.me.uk
Facebook: https://www.facebook.com/RhosHelygLocoWorks

Maple
Trainee Fireman
Trainee Fireman
Posts: 171
Joined: Sat Jun 29, 2013 3:17 pm
Location: Bournemouth

Post by Maple » Mon Jun 02, 2014 7:24 am

Tony W that is certainly an interesting design i may try that! Is there a design anywhere and how well does it work?

Tom Tom, i am using ground level screwed to bricks so ma have to move the spring to the side

Andy i am the lazy one i don't wont to get up from my beer chair to change the point lol

Cheers

Ben

User avatar
TonyW
Driver
Driver
Posts: 1223
Joined: Fri May 16, 2008 9:25 am
Location: North Wales
Contact:

Post by TonyW » Mon Jun 02, 2014 11:26 am

Maple:101316 wrote:Tony W that is certainly an interesting design i may try that! Is there a design anywhere and how well does it work?
I don't know of a design as such ... you just have to get some rail and sleepers and make them! They work well.
Tony Willmore
Rhos Helyg Locomotive Works: http://www.rhoshelyg.me.uk
Facebook: https://www.facebook.com/RhosHelygLocoWorks

User avatar
andymctractor
Trainee Driver
Trainee Driver
Posts: 604
Joined: Fri Feb 01, 2013 12:03 am
Location: Suffolk, UK
Contact:

Post by andymctractor » Mon Jun 02, 2014 11:47 am

TonyW:101285 wrote:Or with no moving parts...
That is very clever and almost too simple.
Regards
Andy McMahon

If it moves, salute it.  If it doesn't move, paint it. (RN sailors basic skills course 1968)

Maple
Trainee Fireman
Trainee Fireman
Posts: 171
Joined: Sat Jun 29, 2013 3:17 pm
Location: Bournemouth

Post by Maple » Mon Jun 02, 2014 1:28 pm

I take it leads in on the straight and out on the curve?
Thought I better check.

User avatar
TonyW
Driver
Driver
Posts: 1223
Joined: Fri May 16, 2008 9:25 am
Location: North Wales
Contact:

Post by TonyW » Mon Jun 02, 2014 2:16 pm

Maple:101331 wrote:I take it leads in on the straight and out on the curve?
Thought I better check.
Yes!
Tony Willmore
Rhos Helyg Locomotive Works: http://www.rhoshelyg.me.uk
Facebook: https://www.facebook.com/RhosHelygLocoWorks

jay1976
Fireman
Fireman
Posts: 326
Joined: Mon Apr 29, 2013 4:32 pm

Post by jay1976 » Mon Jun 02, 2014 10:23 pm

I got a return loop and what i did with my peco points in make the spring a bit weaker by bending it a bit..trains go 1 way come back and change the points ok even some of the wagons when pushed will change the points

Maple
Trainee Fireman
Trainee Fireman
Posts: 171
Joined: Sat Jun 29, 2013 3:17 pm
Location: Bournemouth

Post by Maple » Tue Sep 02, 2014 11:54 pm

Tony. I'm now building my second set of points to that desiginas the first one tested really well. A running Line soon. Dam me building most of my own pointwork
'Professional Bodge artist '

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest