... that list, and also the bolted half-chairs. Possibly the jaw-less saddle chairs. (M1 is a narrower bridge chair which fits on 10" sleepers.) P slide is common for 00-SF and EM, but 00-BF, EM-SF and P4 will each differ. Stock-rail part of 2-part chairs will also be mostly common everywhere but not always. For example the stock rail part of check rail chairs will be the same as the switch chairs in all except EM ... reduce the track gauge to say 8mm so that they are close together on the timber, to save space. The above will give you a raft about 90mm x 16mm (1440 sq.mm). n.b. But note that EM slide chairs are not the same as P4 slide chairs, including the plugs and socket sizes, so they are not interchangeable. p.s. after a bit of thinking I have changed the term "skate" to "raft" throughout. Nothing is ever fixed for two minutes when it is experimental. ...

... Scaleforum thread, but nobody appeared to pick up on it. Here are a couple to save searching for them. Regards Tony. 2151_061306_570000000.jpg The critical area. 2151_061307_430000000.jpg posted: 6 Aug 2019 18:59 from: Rob Manchester Hi Tony, Do you have any experience in EM-SF with 0.8mm flangeways on diamonds or slips? I have sort of adopted it as my standard now as it gives nice running with a visible flangeway that looks very close to P4 but you retain some cross running capabilities with normal EM. I have only ... break down the DCC fed areas into smaller sections, i.e. using plugs and sockets to enable faults to be isolated more easily. As it happens I do have a passing interest in Yeovil Pen Mill as a good friend of mine always wanted to model it in P4 but sadly never got the chance, so it is nice to see it taking shape in your capable hands. Regards Tony. Last edited on 5 Nov 2017 23:38 by Tony W posted: 6 Nov 2017 22:28 from: Andrew Duncan Hello Tony Thanks very much ...

... that wrong then? From what I've seen his stock seems to work OK with it. Click to expand... @Derek Hi Derek, Yes you have got it wrong. Standard EM uses 1.0mm for the flangeway gap. There is a finer standard called EM-SF which uses 0.8mm flangeways, but very few modellers are currently using it (or have even heard of it). It runs EMGS and other kit wheels unmodified at existing back-to-backs. But it won't run RTR wheels widened to EM ... 0.8mm check rail chairs Thread starter Hayfield Start date 7 April 2023 Derek Hi, I was talking about the check rail chairs If we take a step back looking at the reasons for Exactoscale producing their own track system. After Exactoscale demerging from the P4& S4 group and the death of Bernard, Len Newman designed a track work system funded by Andrew Dukes and took over the Exactoscale brand name Most of the Exactoscale range (especially the special chairs) were designed for P4 track building for use in the P4 Track Company turnout ...

... topic: 3478 P4 Wheels on EM-SF track posted: 10 Aug 2019 20:14 from: Rob Manchester Hi Martin, Just had an email from a old friend I haven't spoken with for years. He is just starting to put a layout plan together after being abroad for a few years. He has a stock of kit-built EM locos with back-to-backs set around 16.6-16.7mm so looks like maybe he had my idea of using EM-SF too The problem is he has a quantity of ... topic: 3478 P4 Wheels on EM-SF track posted: 10 Aug 2019 20:14 from: Rob Manchester Hi Martin, Just had an email from a old friend I haven't spoken with for years. He is just starting to put a layout plan together after being abroad for a few years. He has a stock of kit-built EM locos with back-to-backs set around 16.6-16.7mm so looks like maybe he had my idea of using EM-SF too The problem is he has a quantity of ...

... 3D printers- messin' with resin Thread starter AndyB Start date 8 March 2021 Tags 3D printing Elegoo Hi Martin, My bad, trying to multi task I did mean EM-SF however I thought EM could run with some of the RTR stuff, as long as the wheel profile was close to EMS standards therefore EM-SF would be the same is that not the case? cheers Phil____ message ref: 8467 Phil G said: Hi Martin, My bad, trying to multi task I did ... fine as you can go, and to work reliably they should be set to 16.4mm back-to-back. I don't know of any such back-to-back gauges available. EM-SF looks better than standard EM (the flangeway is closer to P4 than to standard EM), but you can't expect to run RTR wheels on it -- stick to kit wheels with flanges 0.6mm thick. Even Markits/Romford at 0.7mm flanges are marginal. cheers, Martin.____ message ref: 8468 ...

... As Stephen says, you will have difficulty fitting the wheels within scale-width models. My opinion is that it's a daft idea -- lots of extra difficulty for minimal improvement in appearance, and non-standard models which won't run on any other layout. EM-SF makes far more sense. But it's not my railway, it's yours. If you do go for 18.5mm, please, please, please -- give it its own name. Don't post anywhere saying you model EM-SF but with widened dimensions ... is that going to work? Or just a waste of time? All you have to say is Ok, or wrong? cheers Phil____ message ref: 9751 IMHO outside cylinder locos will probably be a bit more challenging to say the least. P4 isn't just about the gauge.____ message ref: 9752 Stephen Freeman said: IMHO outside cylinder locos will probably be a bit more challenging to say the least. P4 isn't just about the gauge. Click to expand... Its not ...

... can still use RTR wheel standards. well that's my excuse anyway. cheers Phil,____ message ref: 8465 @Phil G Hi Phil, 18-SF? Not currently in Templot but happy to add it if you can provide the details. EM-SF is there, but not suitable for RTR wheels -- EMGS and other kit wheels only. Same back-to-back as standard EM, so can be mixed on the same layout, interchangeable rolling stock with EM layouts. 18.0mm track gauge ... turn a wheel rim, you can turn down a 3D-printed wheel centre to fit? Martin.____ message ref: 8459 Hi Phil, Here is another rabbit hole for you https://www.rmweb.co.uk/topic/12400...peckett-p4-em/?do=findComment&comment=4144673 I purchased some if these from Dave, and some Gibson wheels to get the rims. Just waiting for my cataract op. Before making progress with the chassis& wheels. But others have succeeded with ...

... . @murphaph Hi Phil, There are some pre-sets in Templot for 5ft-3in gauge, although you can of course set any custom standard you wish: It doesn't include the standard you mentioned because I regard it as flawed, although I may add EM-SF(I) to take advantage of the Exactoscale 0.8mm check-rail chairs. The golden rule is that to use an exact-scale track gauge you must also use exact-scale wheel profiles and flangeways, otherwise the wheels won't fit behind loco ... here! cheers, Martin.____ message ref: 2077 Thanks for the warm welcome Martin. I look forward to following this thread in particular with great interest. My long term plan is 21mm gauge but with EM tolerances to check rails rather than P4 ones. This is the "standard" described in Modelling Irish Railways. I hope by the time I'm ready to start printing my track (still sounds like science fiction to me lol) that I'll be able to select these options in Templot though from what ...

... 85a.uk/templot/club/index.php?threads/experimental-plug-track-continued.673/post-6688 cheers, Martin.____ message ref: 6881 Hi Martin, Just a quick question the attached box file is a simple C12 crossover to EM-SF, as generated and expected, the timbers at the cross over don't align. My question, is the intension to shove timbers first until the cross over timbers make sense, then heave the chairs to bring everything back into alignment? cheers Phil Attachments ... the AB chairs come next if I'm working methodically, although those are needed only above 1:10 (or if you click the parallel wing option for shorter angles). Changing the subject, we're expecting an announcement later today from the Scalefour Society about the Finetrax kits for P4. I'm interested to know how well Wayne has held the tolerances for P4. cheers, Martin.____ message ref: 6968 Hi Martin, Fully understand the STL file will not make a crossing, that is not my intention. I am ...

... -- -- --- -- -- -- -- -- -- -- -- 200mm 20mm 300mm 24mm 400mm 28mm 500mm 32mm 600mm 35mm 750mm 39mm(from your example)....and no I am not going to run EM-SF round 200mm radius track I need to make some 3 point gauges for other odd modelling scales/track gauges some of which will be running round curves that tight. Mind you some of them are rather more generous with the slop built into the track ... posted: 5 Nov 2020 18:32 from: Rob Manchester Hello, Is there a right 'size' for 3-point track gauges? The spacing between the two legs that sit on the outer rail of the curved track seems to vary- my ready made EM and P4 ones seem to have the legs spaced somewhere between 26 and 30mm apart whereas Iain Rice shows some examples is his books that have the legs spaced very wide. My A-level maths was a long time ago, can anybody help with a formula for leg ...