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posted: 4 Jun 2020 08:03 from: Hayfield
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C&L have launched their 2 & 3 bolt chairs in a new revised format, hopefully will be of benefit to trackbuilders I have done a bit more detailed description added to an earlier thread topic 3484 - message 29864 982_040252_440000000.jpg The format is for 16 pieces, from left to right 2x bridge chairs, 2x J chairs, 10x standard chairs and 2 H section fishplates 982_040258_250000000.jpg The 3 bolt chairs has the same selection of chairs but there are two type of fishplates, 1x standard and 1x reinforced The fishplates can also be bought as a separate item, not listed on the website yet but are available with the 2 bolt chairs the bridge chair and J chair have never been available in a plastic moulding, likewise with the 3 bolt J chair and the reinforced fishplate |
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posted: 12 Sep 2020 21:36 from: DerekStuart
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Hello John Can I ask what a 'J' chair is used for, please? It's not one I've seen before. Thanks Derek |
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posted: 12 Sep 2020 21:58 from: Rob Manchester
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Hi Derek, 'J' is for joint. Rob |
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posted: 12 Sep 2020 22:15 from: Martin Wynne
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DerekStuart wrote: Can I ask what a 'J' chair is used for, please? It's not one I've seen before.Hi Derek, "S1J" chairs are joint chairs. They have a wider base than ordinary S1 chairs, for use adjacent to rail joints. The rail is supported on the wider base as close to the joint as possible. The jaws are the same size as ordinary S1 chairs, so that the fishplates still fit between them. If you look closely in the NERA 1926 SRE book, you will see that S1J chairs are shown adjacent to the rail joints within some turnouts and other formations, and included in the parts lists. S1J also used at the ends of 60ft track panels in some cases. S1J chair drawing in the NERA book at page 5. In the drawing of a rail joint on page 1 (left middle), joint chairs and 12" wide joint timbering is indicated by dotted lines. You can see that the extra width means the rail is supported as far as the first fish-bolt. cheers, Martin. |
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posted: 12 Sep 2020 23:21 from: DerekStuart
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Thanks both. I'm a bit annoyed with myself as I should have realised that. Apologies if I appear to be lazy, I'm not. I just seem to be forgetting things more easily than I'd like. Derek |
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posted: 13 Sep 2020 01:09 from: Rob Manchester
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DerekStuart wrote: Thanks both.Derek, Join the club. While I was out walking the other day I met a lady I used to work with. I couldn't remember her name at the time. I have been trying to remember it for the last 3 days but no joy as yet Rob |
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posted: 13 Sep 2020 08:56 from: Hayfield
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DerekStuart wrote: Thanks both.Derek Its something we all do and more regularly as we get older I guess there is no hard and fast rule but is based on supporting the weakest point in track. On plain track the spacing between the first 3 and last 3 sleepers in a track panel is closer together and sometimes the first and last sleeper were 12 " wide, in some regions J chairs were fitted on the first and last sleeper With turnouts where joints occur and items need supporting timbers are closer together and or under the stress point (crossing nose), again where joints appear J chairs are used Its all part of giving your track a more lifelike appearance Back to the sprues. These new 2 & 3 bold 4 mm scale sprues (3 bolt 7 mm to follow soon) have two L1 (bridge chairs), two J chairs and 2 functioning pairs of fishplates (2 bolt both plain, 3 bold 1 x plain & 1 x reinforced. Phil is considering when funds are available to produce 00 scale check rail chairs and a universal turnout special chair sprue. These are in the thought stage at the moment I keep banging on but with chaired track chopped up chairs usually look like chopped up chairs, rail joiners again look like rail joiners The Exactoscale diagrams & plans contradict themselves. An A switch has 2 bridge chairs, a B switch has 6 and a C switch 10 Looking at common crossings a 1-5 crossing has 1 bridge chair , a 1-6 has 3. a 1-7 has 5, a 1-8 has 2, But to make these crossings and switches look even better they have block chairs and extended slide chairs as well as slab chairs on the crossing nose. To be fair a reasonable representation of some of the crossing block chairs can be made by splicing 3 standard chairs together. But given the length some modelers go to in detailing their stock I am surprised most ignore the Exactoscale special chairs The special switch chair will produce 1 x LH and 1 x RH either A, B or C switches all for £2 and there will be spare half chair and center blocks parts The special Common crossing pack again is £2 and has enough parts for 1 x 1-5, 1 x 1-6, 1 x 1-7, 1 x 1-8 and 1 x 1-10 crossing Both these packs work functionally in 00, EM & P4 gauges, as do the diamond crossing and slip packs. there is no issues in using them cosmetically either in these sizes or adjusting for other sizes Some are actually cost effective example a pack of check chairs £8.50 = 85p per turnout saving using 20 chairs, like wise a common crossing will save 10 chairs for 40p the switch chair pack is less cost effective but will still come in at well under £1 per turnout, all 3 will lift your turnouts to another level http://exactoscale.com/track-components/chair-positions/ For those working in P4 and EM gauges these turnout and crossing bases are extremely useful, not only do they speed up the build process but they make for a very robust turnout or crossing 4mm scale P4 Turnout bases (4TB)
[size= ] [size=I think they are only available from the Scalefour society] |
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posted: 13 Sep 2020 11:17 from: Hayfield
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982_130612_430000000.jpg I hope this shows the chair positions a bit clearer, on the B switch the next timber on the right has S1 chairs on the main (straight road) and L1 (bridge) on the turnout road so tot to bottom S1 L1 S1 L1 |
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posted: 14 Sep 2020 01:07 from: DerekStuart
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Thanks John. I remembered most of this detail, I just couldn't think what the J chair was for. Here's an example of memory. How many times has Martin told people the difference between catch and trap points. (X is the device, but it's doing the job of Y). I still cannot remember which way around it is.. It's as hard as remembering who is who between 'ant and dec.' PS I'm not as old as I look/ sound- I just damaged my head a little while back. Hello Rob I'm terrible with faces, but always have been. A few times I've thought I recognise someone and talked to them like we were long lost friends whilst trying to remember their name(s)... Only then to realise I'd never met them before. As an aside, I'm really glad I got back into railway modelling- it's nice to converse with people about, and let's be honest, something and nothing as opposed to the urgent matters of daily life. Keep well Derek |
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posted: 15 Sep 2020 15:42 from: Martin Wynne
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Martin Wynne wrote: DerekStuart wrote:Can I ask what a 'J' chair is used for, please? It's not one I've seen before.Hi Derek, Just spotted a recent diagram in a different topic: topic 3733 - message 30478 2_091131_410000000.png Only a month ago and I'd forgotten it already. Martin. |
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