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posted: 2 Jan 2009 00:01 from: Phil O
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Hi Matin I am using Templot Ver 0.91c with windows XP. I am currently try to put a set of catch points on the stock rail of a a turnout as per the photo on page 72 in the GWR switch & crossing practice book. I have got the switch in the closure rail but every time I try to get the second switch almost in the correct place it gets attracted to the other road and facing in the opposite direction. I have tried moving the notch back to the datum and repeating the original process and then the notch appears from nowhere and I am back to pulling my hair out. I have tried three or four times even to putting the switch in the stock rail and then trying to put the other switch in the closure. Is this a glitch or am I doing something wrong as I am not giving any commands to move the notch except when it has appeared and I have moved it to the datum, to be out of the way. I attach a screen shot of what I end up with. Happy New Year Phil |
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Attachment: attach_448_675_Catch_point.PNG 385 | |||
posted: 2 Jan 2009 00:54 from: Stephen Freeman
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Hi, I'll have a look at the book tomorrow, to see what you are trying to achieve but I think you need to be doing something differently. Basically the easiest way to locate anything at in Templot is to put the peg exactly where you want it and then Notch under peg. Then you can use shift onto notch. Phil O wrote: Hi Matin |
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posted: 2 Jan 2009 03:05 from: Martin Wynne
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Phil O wrote: Is this a glitch or am I doing something wrong as I am not giving any commands to move the notch except when it has appeared and I have moved it to the datum, to be out of the way.Hi Phil, You are using F7 with snapping turned on (which it is by default). There are several ways to turn it off, see: F7 snapping info the easiest way being to hold down the SHIFT key when you release the mouse action. However, using F7 with manual alignment by eye is not the best way to get the result you want. Try putting the turnout's peg on CESP (for a regular V-crossing) or TCP (for a generic or curviform V-crossing), and then pegging on the catch point. Then align it to the turnout curve (F6), swap facing-trailing if necessary, and snake it (CTRL-F6) to the desired position. For TCP there is a direct pegging function at peg/align tools > snap the control template onto background template > at TCP menu item. For CESP you need to use the notch in the usual way. Your turnout as shown has a regular V-crossing. I can't be sure, but I think it has some contraflexure (negative radius, Y-turnout) -- in which case changing to a curviform V-crossing is advisable, and you can then use TCP. I will create a video for the above in a day or two. I think it is already covered in one of the videos, but at present I'm in no fit state to find it. regards, Martin. |
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posted: 2 Jan 2009 04:27 from: Phil O
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Hi Martin I am using control F7 and F8 to align the template manually over the background template, I am not trying to use any other method(s) to acheive the end result. I hope this will be of further assitance tomorrow. Cheers Phil |
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posted: 2 Jan 2009 05:11 from: Martin Wynne
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Phil O wrote: I am using control F7 and F8 to align the template manually over the background template, I am not trying to use any other method(s) to achieve the end result.Hi Phil, In that case, turn off the snapping -- untick the action > F7 snap options > snap on background templates menu option, or hold down the SHIFT key while using the F7 mouse action. regards, Martin. |
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posted: 2 Jan 2009 14:26 from: Phil O
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Hi Martin Many thanks for that, I have now completed the template all I have to do is build it. Still can't understand where the notch comes from though. Many thanks again for your time and patience. Phil |
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posted: 2 Jan 2009 14:40 from: Martin Wynne
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Phil O wrote: Still can't understand where the notch comes from though.Hi Phil, Templot uses the notch to perform the F7 snapping function. You can move it back to where it came from by pressing SHIFT-F7 (that's geometry > notch > cycle recent notch locations menu item). I could make Templot move it back automatically, but it seems better to have it under user control. Then you can use the snapping functions as a nifty trick to get the notch where you want it on a background template. You can easily move the control template away again if you are not yet ready to peg it. regards, Martin. |
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posted: 2 Jan 2009 16:48 from: Stephen Freeman
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Hi, I've had a look at the Book and I see what you are trying to do. Interesting! Box file attached |
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Attachment: attach_449_675_page72_09_01_02_1239_23.box 352 | |||
posted: 2 Jan 2009 17:21 from: Martin Wynne
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Borg-Rail wrote: Box file attachedHi Stephen, Looking at the photo, I think that turnout needs a curviform V-crossing. If you copy it to the control template and then make the change, you can see the difference over the background template. Thanks for uploading it. regards, Martin. |
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posted: 2 Jan 2009 19:21 from: Stephen Freeman
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Hi, Thought it might but wasn't sure- book says 'curvature of the turnout is continuous through the common crossing to heel joint of the vee leg'. Martin Wynne wrote: Borg-Rail wrote:Box file attachedHi Stephen, |
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