Scalefour Forum

In reply to Keith's last post and enquiry: Keith is probably on to it. The problem did seem to occur when the button was released but also occured if it was held down for a long time. The main reaction though was on quick repetitive on and offs. Interestingly since I re-sited one of the boards away ...

More info about the servo set up that twitches: 1. Cables to the servos are as supplied and therefore quite short (a point made already). 2. Screening the cables made no difference and I also tried encasing one of the servos in lead and again there was no difference. 3. However I tried various locos...

Keith and everyone who has contributed,

Thank you for your help so far. I will see what else I can find out to answer Keith's questions.

I am, though, away for a few days, so will not be able to put anything up until the weekend.

David

I now have more information about the way the servos are installed. I quote directly from the email I received. 'The servo and servo control board are as supplied by Heathcote. There are two servos installed under the layout to work the level crossing but only one twitches when a loco passes. The se...

Thanks, Keith. I, too, will see if I can find out more.

David

No, Keith. The discussions were with people in the Mid Devon group. There was experience of the 'twitch' there and they had heard of other people who had also had it.

David

In recent discussions, I have heard mention of some difficulties with servos when a loco passes or an electromagnetic uncoupler is used in that the servos 'twitch'. For example, the servos used to control level crossing gates give a twitch when a loco passes. Twisting together the wires to the servo...

Thanks, Mark. I feel some experimenting coming on!

David

Mark, I like your pick-up arrangement. Any chance of a close-up and/or a bit more description. (Apologies for jumping in on a different thread). You may have seen that I was enquiring about top wipers in the thread in this same category - http://www.scalefour.org/forum/viewtopic.php?f=19&t=1247 ...

Apologies, Paul.

I am not familiar with either of the areas - where Cumbria or Saffron Walden - but I suppose the greatest difference is in the architecture. You have a few lineside structures to convert to the GE, but the (?is it a) mill is presumably built in a different material.

David

It has taken me some time, but I have read and made use of the advice offered, eventually come up with the following. The wire is .35pb and I have attached brass wipers to the ends. I made the holder for the pickups from some scrap, attached it to some very thin copper clad which in turn is epoxyed ...

Isn't there a space near the loos?

David

I haven't a clue about LNER stuff, but have you tried Fox Transfers?

http://www.fox-transfers.co.uk/

David

This is developing into an interesting business. Keep going, chaps, as I am sure it will be of interest & use to others. Martin - please carry on. Philip - is the suggestion that PB, with any arcing or heat, will react adversely with steel? I had thought that the wire operating on the tyre face ...

Thank you, Will. The screw through the lead goes straight a nut under the cab floor but I take the point. The picture, too, is very helpful - worth a thousand words? It's a lovely, clear piece of work. I had in mind soldering the copper clad to the frames and scoring an electrical break. My mind set...

I have a problem with pick ups. I am building this 4-4-2T which was designed (a) for OO and is now P4 and (b) to take plunger pickups which I am not happy with and anyway, they won't fit now. I cannot get to the tyres very easily underneath because of spring detail which is part of the frames and I ...

. . . and on the Scaleforum retrospective http://www.scalefour.org/shows/S4um2010/stmerryn.html

David B

Thanks, Craig. This is the sort of thing I need. Much appreciated.

If anyone has a copy of An Historical Survey of Great Western Stations, Volume 4, please get in touch.

David B

Can anyone help me with research in to Tiverton Station - the town, NOT the Junction? Earlier the period, the better, but anything will be appreciated. Is there anything in the Clarke/Potts Historical Survey books vols 3 or 4? If so, can anyone let me have a scan or, better still, the book? These tw...

Is there a recommended weight range for wagons (and coaches)? I have been given two 'formulae': 1. 28g per wagon plus 14g for each additional 25mm of length. 2. 1oz per axle plus ½oz for each additional inch of length. Neither of these state what the base line is, but I am assuming a 10' wheelbase o...

I have recently bought a London Road Models RSU. I have made a label to show where to put the leads for the various power outputs, so have attached the graphic in case it is of use to anyone else. It is designed for an Avery L7161 label, 63.5mm x 46.6mm.

David B

I have got hold of the Tourrett book and it is very informative - it is also an interesting read!

Thank you for your help.

David B

Thank you. I am tracking down the Tourret's book which sounds useful. I am making the David Geen kit, but the photographs are photocopies of photographs and not at all clear for the underframe. It is the arrangement of 'bits' on the underframe that I am having difficulty with - what V hangers, roddi...

It's the 2 tank Cordon and an early version, pre 1910ish. Not set on the number - this depends on information I can get.

David

Does anyone know of any diagrams that show the layout of various brake gear arrangements? I am making a model of a GWR Cordon which has several brake gear versions from 2 blocks on one side only to fully vacuum fitted. However, I cannot find any suitable photographs and the instructions are less tha...