Model Railway Forum

Go Back   Model Railway Forum > Model Railway Construction > Modelling Techniques - Show and Tell

Modelling Techniques - Show and Tell Your place to show and describe in detail and with photos how you produced a specific item of modelling. Rolling stock, Building, Scenery or something else related.


Reply
 
Thread Tools Display Modes
Old 14-08-2018, 01:01 PM   #101
johnsmithuk
Mucker Upperer
 
johnsmithuk's Avatar
 

Join Date: Jun 2017
Location: North East England
Posts: 121
Blog Entries: 8
johnsmithuk is on a distinguished road
Default

I am impressed, and seems with patience a do-able solution.
__________________
John

Link to my layout in progress South Auckland Junction
johnsmithuk is offline   Reply With Quote
Old 14-08-2018, 08:17 PM   #102
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 4,020
Steve M is on a distinguished road
Default

I think Iím getting close to the final design. Hooray, I hear.

I changed the soft iron wire for a metal staple - after all, one end is already bent to 90deg and they are easy to get old of. The kick up at the other end is just enough so that end touches the magnet when activated. Donít cut the staple as the extra Ďmeatí helps the magnet attract and provides some balance.

I had a challenge with the brass dropper as the rod gave only a small glueing surface. The answer was to flatten about 6/7mm with a small hammer and wrap it round the original hook of the tension coupling.
Precise location of the dropper is vital - it needs to hang just in front of the loop of the coupling - the thickness of a fag paper is about right.

Bending the bottom of the dropper forward to 45deg is best left until the glue has set. The length can then be trimmed - I am leaving it just long enough so it clears the trackwork at points and crossings but I can trim it back later if required.

I also found that it helps to thin down the corresponding loop by removing the lip under the rear edge.

20180814_194355 by Steve Mumford, on Flickr

For anyone mad enough to try this method here are a few measurements (they are different from the original incarnation of this method published ten years ago).

20180814_195528 by Steve Mumford, on Flickr
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Old 14-08-2018, 09:13 PM   #103
Mr Bones
Privateer
 
Mr Bones's Avatar
 

Join Date: Apr 2016
Location: Canterbury
Posts: 909
Mr Bones is on a distinguished road
Default

Well you certainly tried and tested a multitude of methods and it seems to have paid off. Thank you for sharing all this. It is definitely food for thought.

Would I do this? that I don't know. Time will tell. Thanks again.
__________________
The difference between stupidity and genius is that genius has its limits.
Mr Bones is offline   Reply With Quote
Old 14-08-2018, 09:18 PM   #104
Mountain Goat
Unique Member.
 
Mountain Goat's Avatar
 

Join Date: Mar 2011
Location: UK.
Posts: 2,374
Mountain Goat is an unknown quantity at this point
Default

It is excellent. Also consider this. If all the locos have their hooks removed at both ends (Which makes them look better), and the brake coaches and brake vans along with the odd ordinary coach/wagon have this modification fitted at both ends, you dont have to fit every wagon or coach. You only need to do a few. As long as you end up with rakes of wagons or coaches where the converted ones are at the ends of the rake. This then saves your sanity of converting them all.
Mountain Goat is offline   Reply With Quote
Old 14-08-2018, 09:36 PM   #105
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 4,020
Steve M is on a distinguished road
Default

Tony, I dare you to try.

Itís a shame the Dinghams proved to be a problem on curves for coaches. For a small, relatively straight shunting layout they would be my choice and they are not difficult to construct.

Although I did not try the Sprat and Winkle couplings, I decided that they needed too much in the way of modification to the stock which could be a problem when the kids clear the shed when Iím gone.

The tension lock conversion seems to offer the best compromise in that the only bit that is modified is just a plug in and can easily be returned to standard. That old RMWeb post was helpful but the measurements were out meaning I had to reinvent the wheel somewhat.

The original system was Ďinventedí before neodymium magnets were readily available, and while I have seen a few mentions of electromagnets, every example I have seen online uses a row of magnets. So Iíll tentatively claim that bit as my own.

The main thing is, the system is cheap. I already had the point motors that were converted as well as the PSU, the switches cost £6, staples were free and a pack of brass rod another £5.

Canít be bad.
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Old 14-08-2018, 09:43 PM   #106
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 4,020
Steve M is on a distinguished road
Default

Quote:
Originally Posted by Mountain Goat View Post
It is excellent. Also consider this. If all the locos have their hooks removed at both ends (Which makes them look better), and the brake coaches and brake vans along with the odd ordinary coach/wagon have this modification fitted at both ends, you dont have to fit every wagon or coach. You only need to do a few. As long as you end up with rakes of wagons or coaches where the converted ones are at the ends of the rake. This then saves your sanity of converting them all.
At this stage Iím leaving the Dinghams on the goods wagons - they work although I can change them if I have problems.

Coaches will be in rakes with just the modified coupling at each end of the rake.
I already remove the front coupling from all my tender locos so just a loop at the other end works well for me.

In my research I did see it suggested that a brass rod across the rear buffers works instead of the NEM loop - I may try it, I may not.
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Old Today, 10:38 AM   #107
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 4,020
Steve M is on a distinguished road
Default

A new modification. Clearances are tight using these adapted tension locks and this morning I noticed some of the hooks were not engaging or disengaging cleanly. The answer was to cut out the rear of the plastic hoop and replace it with a short length of 0.5mm brass rod.

20180816_103101 by Steve Mumford, on Flickr
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Old Today, 11:41 AM   #108
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 4,020
Steve M is on a distinguished road
Default

A short video showing the modified coupling in action, including propelling a coach without recoupling.

The loco still has to be ‘spotted’ accurately so I added a spot of white paint to the end of the coupling tail and the top of the magnet, but I think there are still some improvements to be made around the location and maybe the size of the electromagnetic core.

0EBDECFA-E0E5-41F3-94BF-BDBBB836043A by Steve Mumford, on Flickr
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Reply

Bookmarks



Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 01:03 PM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.