Search found 216 matches

by junctionmad
Thu Sep 20, 2018 3:37 pm
Forum: Couplings
Topic: Auto- Couplings , what choices - decisions
Replies: 36
Views: 5681

Re: Auto- Couplings , what choices - decisions

Yes, again. Unfortunately, I forgot to pack a loco with the display when I came away, so I won't be able to show this feature at Scaleforum. I should make it clear that these couplings are single-ended, with a hook at one end of the vehicle and a loop at the other. This means that vehicles [ except...
by junctionmad
Thu Sep 20, 2018 9:10 am
Forum: Couplings
Topic: Auto- Couplings , what choices - decisions
Replies: 36
Views: 5681

Re: Auto- Couplings , what choices - decisions

Yes, Dave. The original version with a fixed over-rider above the hook would only release by backing away slightly (the dreaded 'Sprat & Winkle shuffle'). So I designed the current version with a hinged over-rider above the hook to obviate the need for the shuffle. The coupling is uncoupled imm...
by junctionmad
Wed Sep 19, 2018 8:49 pm
Forum: Couplings
Topic: Auto- Couplings , what choices - decisions
Replies: 36
Views: 5681

Re: Auto- Couplings , what choices - decisions

If I may be pardoned for blowing my own trumpet, I shall be demonstrating the 'Burford' auto-coupling at Scaleforum, as part of the Bristol Group's mega-demonstration - you will find us in front of the balcony (turn right from the entrance door as you go in). I tried out numerous couplings, includi...
by junctionmad
Wed Sep 19, 2018 8:49 pm
Forum: Couplings
Topic: Auto- Couplings , what choices - decisions
Replies: 36
Views: 5681

Re: Auto- Couplings , what choices - decisions

Armchair Modeller wrote:There is also the Lincs coupler, as another alternative

nec flier.docx


does not do delayed uncoupling
by junctionmad
Wed Sep 19, 2018 1:57 pm
Forum: Couplings
Topic: Auto- Couplings , what choices - decisions
Replies: 36
Views: 5681

Auto- Couplings , what choices - decisions

Im sure ( I know ) this topic was been debated to death But I have to make a decision to pick an Auto coupling The main criteria is it must have delayed uncoupling and be capable of being uncoupled by hidden magnets ( either electro, or servo adjusted permanent magnets ) Ive tested AJs, S&W, Din...
by junctionmad
Mon Sep 17, 2018 10:22 am
Forum: Product Information
Topic: Exactoscale Products
Replies: 78
Views: 22484

Re: Exactoscale Products

When is it expected that the Societies stores will have track components and have pricing available ? Sorry, but I'm not going to spend time answering questions when the answers are on the site. Andrew I read through the site and I note the dates. However my question was more directed at the Societ...
by junctionmad
Sat Sep 15, 2018 9:39 pm
Forum: Product Information
Topic: Exactoscale Products
Replies: 78
Views: 22484

Re: Exactoscale Products

When is it expected that the Societies stores will have track components and have pricing available ?
by junctionmad
Tue Aug 21, 2018 10:07 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 54
Views: 9758

Re: Mk2 Lever frame musings

I have now added the microswitches , These were far more " fiddley " then I expected What are people using too fix the frame down, I used m2.5 bolts , but the head of these tends to foul the microswitches , and force them further apart then is necessary for good spacing , I cant see any he...
by junctionmad
Tue Aug 21, 2018 11:30 am
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 54
Views: 9758

Re: Mk2 Lever frame musings

Thanks Howard, I have 35 more levers to make and will keep trying the rolling method , If Im lucky Ill have a proper rolling mill soon anyway personally I found no issues tack soldering the rubbing strips in the manner I described, With the quadrant soldered on only the very outside of the quadrant ...
by junctionmad
Sun Aug 19, 2018 7:24 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 54
Views: 9758

Mk2 Lever frame musings

Having completed the first stage which is 15 levers of 50 ( the points levers, these will be rearranged in the 50 frame ) , I feel I can comment on the process and the etch Firstly its a very enjoyable process , building as it does into very robust and surprising heavy unit First forming the quadran...
by junctionmad
Fri Jul 27, 2018 3:31 am
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Re: Mk2 Lever frame and Microswitches

Hello Dave, Yes, I can see now the lever is in its slot! The shape of the metal lever on your micro-switch looks different to mine (seen here as a common crossing polarity switch): IMG_8912 (2).JPG Perhaps your switch started out with a straight lever, but as it is now, it appears almost closed wit...
by junctionmad
Fri Jul 27, 2018 3:18 am
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Re: Mk2 Lever frame and Microswitches

Hello Dave, As promised I have had a quick look at how to achieve what you seem to be after. Of course, this is nothing more than a sketch and I suspect that there are better ways of doing it, but it would work. As you can see, I am suggesting attaching a simple cam (made from a bit of fret waste -...
by junctionmad
Thu Jul 26, 2018 8:38 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Re: Mk2 Lever frame and Microswitches

Colin Parks wrote:Is it just me, or is the lever nearest the camera not in its slot. If it is not, that could be the cause of the problem with the micro switches.

It’s in its slot

Dave
by junctionmad
Thu Jul 26, 2018 10:44 am
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 611
Views: 95711

Re: Construction of a Test Track

I decided not to bend the quadrant strips , but I tack solder one end , while holding the strip , then I press down and tack solder the other end , letting the frame cool , I quickly run solder into the seam I also used steel m2.5 nickel coated nuts , which solder quite well with the appropriate flu...
by junctionmad
Thu Jul 26, 2018 10:29 am
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Re: Mk2 Lever frame and Microswitches

The issue is I would really like a longer travel between switching , ... so that I could get more then 10% travel between switching Its not a show stopper , I can move the microswitches so that I get your 60% 40& (or close enough ) , dave Hello Dave, Ah - Keith's post has helped me to understan...
by junctionmad
Wed Jul 25, 2018 7:39 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Re: Mk2 Lever frame and Microswitches

What I am finding , and for me these frames are electric only , is that the microswitch switches in a very short range typically 5-8mm of the lever travel , i.e. at around 60%,40% , depending on where I position the micro switch frame I can move that 5-8mm anywhere , but I cant arrange a situation ...
by junctionmad
Wed Jul 25, 2018 5:16 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame and Microswitches
Replies: 15
Views: 2881

Mk2 Lever frame and Microswitches

Having completed 2 levers of the first 5 , of 55!, I decided to try the microswitches My microswitches are " standard " from Farnell with rollers etc, The nature of the fret is that the roller must not extend beyond the body of the microswitch What I am finding , and for me these frames ar...
by junctionmad
Fri Jul 20, 2018 7:51 am
Forum: Signals and Control Systems
Topic: Mk2 lever frame , connecting 5-way units together
Replies: 3
Views: 1270

Re: Mk2 lever frame , connecting 5-way units together

ah, I see now what you mean , there is an etched recess , thanks , Only 50 levers to go !

Im using M2 and have placed all my BA screws in a safe deposit box for future generations !
by junctionmad
Thu Jul 19, 2018 8:33 pm
Forum: Signals and Control Systems
Topic: Mk2 lever frame , connecting 5-way units together
Replies: 3
Views: 1270

Mk2 lever frame , connecting 5-way units together

Can someone fill me in as to how these 5-ways units are connected together in a longer frame, if I just butt each tab up , the quadrant is slightly " stepped "in or out of each alternative 5-way unit. The instructions are silent on the approach thanks Dave PS. really we should be designing...
by junctionmad
Mon Jul 02, 2018 10:00 pm
Forum: Operating in Practice
Topic: A new lever frame design
Replies: 91
Views: 18862

Re: A new lever frame design

Just received my 11 kits . Suggestion : It should be mentioned in the shop that you need a number of items in order to complete the kit like various tubes and wire, Now I have to order those, I dont like " serial discovery !" :D Did you not download and read the "instructions first? ...
by junctionmad
Mon Jun 25, 2018 10:43 am
Forum: Operating in Practice
Topic: A new lever frame design
Replies: 91
Views: 18862

Re: A new lever frame design

Just received my 11 kits . Suggestion : It should be mentioned in the shop that you need a number of items in order to complete the kit like various tubes and wire, Now I have to order those, I dont like " serial discovery !" :D
by junctionmad
Thu Jun 21, 2018 9:45 am
Forum: Signals and Control Systems
Topic: Mk2 Lever Frame , Dimensions
Replies: 32
Views: 6063

Re: Mk2 Lever Frame , Dimensions

PS: can the catch handles be electrically detected ?
by junctionmad
Thu Jun 21, 2018 9:42 am
Forum: Signals and Control Systems
Topic: Mk2 Lever Frame , Dimensions
Replies: 32
Views: 6063

Re: Mk2 Lever Frame , Dimensions

Howard, can the frame be fitted into a panel, or just it have to be supported from the base , mine will only have microswitches Hi Dave, It needs a base only in the sense that the brackets for the microswitches are not attached to the frame except by some kind of common base - but if you are not us...
by junctionmad
Sat Jun 16, 2018 8:00 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 611
Views: 95711

Re: Construction of a Test Track

my lever frame is electrically interlocked , i.e. moving a lever that is locked will have no effect and at the base of each lever is a red/green led, red indicates Locked , moving a locked lever will cause the red led to flash and a beeper to sound The locking will be running on a Pi Zero , and as w...
by junctionmad
Sat Jun 16, 2018 7:51 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever Frame , Dimensions
Replies: 32
Views: 6063

Re: Mk2 Lever Frame , Dimensions

Boy , Im looking forward to my 55 lever frame, Mine will be electrically interlocked with a bi-colour LED at the base of each lever, indicating that the lever is locked or not , locked levers will move but not activate anything Howard, can the frame be fitted into a panel, or just it have to be supp...

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