Manual point lever with air

Mallarddriver

Mallarddriver

Registered
Hello,
I´ve just started to build a point lever by using air.
Here´s the equipement.

To be continued....
Best regards
Soeren
 
If the method you are using is what I think it is, congratulations. It looks inexpensive and down right simple.
 
In one of my old model railway magazines a similar method was used on a large OO gauge layout, but water mixed with anitfreeze was used instead of air, as it did'nt compress, unlike air does.
 
MRail said:
A manual version of the "Del-Air" system marketed by Brandbright.
Clever.
Click to expand...

Yes cleaver,

As far a comercial pnuematic system go, Del-Air stopped being available quite a long time ago. A new system Ez-Air became available, but that too is no longer available. Brandbright supplied these systems in the UK, but they seem to have virtually nothing remaining now, even through they still have it on their web site.

Yet another system is currently available from SVRR (Sunset Valley Railroad) and that is currently available in the UK through Back 2 Bay 6.
 
More details and pictures of progress will be greatly appreciated by myself if you don't mind me copying your idea
 
For those in the UK you might find this supplier useful

http://www.tts-group.co.uk/shops/tts/Range/Pneumatics/91545867-9220-420f-b11a-f780098cd551 < Link To http://www.tts-group.co.u...420f-b11a-f780098cd551

TTS supply primary schools with equipment for D&T and I think their stuff is quite good value (scroll down for tubing and syringes).

Rik

PS - they used to sell Tee-pieces for junctions - tracked down an eBay supplier but I'm sure TTS used to be less expensive.

http://www.ebay.co.uk/itm/Hose-Tube-Pipe-3-Way-T-piece-Splitter-Connector-3mm-/260834734595 < Link To http://www.ebay.co.uk/itm...ctor-3mm-/260834734595

With a Tee-piece one 20ml syringe can power two 10ml syringes (eg for two linked crossover turnouts)
 
I too would suggest liquid filling for the reasons stated. Aquarium suppliers sell a range of plastic fittings for 3/16" id tube.
 
I have an excellent point lever that works in any weather, me finger, no problems and it never fails
 
Bram said:
I have an excellent point lever that works in any weather, me finger, no problems and it never fails
Click to expand...

Not sure it works instantly on a point that's more than 10ft away! :rolf:
 
Bram said:
I have an excellent point lever that works in any weather, me finger, no problems and it never fails
Click to expand...

Digital then.... ;)
 
ROSS said:
I am wondering whether polythene tubing will crack and leak over time and how it will fare in cold icy weather even if not filled with water.. ?
Click to expand...

I believe it may become brittle and not hold up well in the sun. If you can get some rubber tubing I think you will be happier. Also, what about surgical tubing? It's very flexible and seems a more likely candidate for weather extremes.
 
I imagine silicone tubing would be better. Have a look at http://www.altecweb.com/home.asp?cat=category1201
They also sell Viton® Rubber Tubing http://www.altecweb.com/home.asp?cat=RangeE03 which supposedly "combines outstanding chemical and temperature resistance with excellent flexibility". It is "resistant to concentrated acids and solvents, weathering, Ozone, Radiation and will withstand temperatures over 200ºC". This is what the Altec web site says. I have no experience of it.
Good luck!
Steve
 
If Viton tubing is available then its very suited to being used in harsh situations. I have used Viton "O" rings as piston rings in 3" bore marine steam engines running at around 150 psi and they outlast iron rings 5 times....
 
Madman said:
ROSS said:
I am wondering whether polythene tubing will crack and leak over time and how it will fare in cold icy weather even if not filled with water.. ?
Click to expand...

I believe it may become brittle and not hold up well in the sun. If you can get some rubber tubing I think you will be happier. Also, what about surgical tubing? It's very flexible and seems a more likely candidate for weather extremes.
Click to expand...
Not so sure that surgical tubing would withstand UV exposure if we are talking the latex stuff..
 
tramcar trev said:
Madman said:
ROSS said:
I am wondering whether polythene tubing will crack and leak over time and how it will fare in cold icy weather even if not filled with water.. ?
Click to expand...

I believe it may become brittle and not hold up well in the sun. If you can get some rubber tubing I think you will be happier. Also, what about surgical tubing? It's very flexible and seems a more likely candidate for weather extremes.
Click to expand...
Not so sure that surgical tubing would withstand UV exposure if we are talking the latex stuff..
Click to expand...


That was just a wild presumtion on my part. I'm given to off the wall ideas according to people that surround me, albeit at a distance. :rolleyes:
 
Madman said:
tramcar trev said:
Madman said:
ROSS said:
I am wondering whether polythene tubing will crack and leak over time and how it will fare in cold icy weather even if not filled with water.. ?
Click to expand...

I believe it may become brittle and not hold up well in the sun. If you can get some rubber tubing I think you will be happier. Also, what about surgical tubing? It's very flexible and seems a more likely candidate for weather extremes.
Click to expand...
Not so sure that surgical tubing would withstand UV exposure if we are talking the latex stuff..
Click to expand...


That was just a wild presumtion on my part. I'm given to off the wall ideas according to people that surround me, albeit at a distance. :rolleyes:
Click to expand...
I'm comforted in the knowledge that there are those of us who do think off the cuff, out of the square and off the wall...... Life is so much more exciting thinking thus...
 
Mallarddriver said:
Hello boys and girls,
here is the first video(my first video ever on youtbe,so be gentle)
http://www.youtube.com/watch?v=YabLobIdzP8&feature=youtu.be < Link To http://www.youtube.com/wa...8&feature=youtu.be
To be continued...
Kind regards
Soeren
Click to expand...

Well it seems to work (presume you were working the other syringe out of camera shot). Definitely food for thought Soeren:thumbup:
 
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