Templot Club Archive 2007-2020                             

topic: 2478TOLP Peg Position Query.
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posted: 1 Jul 2014 00:30

from:

Brian Nicholls
 
Poole - United Kingdom

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Hi Martin,

I have a query regarding one of the geometry peg positions in version 2.09a.

when you lengthen the turnout exit road using CNTRL + F12, say beyond the turnout overall length, then after the adjustment, putting the peg on the TOLP position, still puts the peg on the centre-line of the turnout road directly in line with the overall turnout length (as before).

Is this correct ?

Or should this change with the turnout exit road length ?

All the best,

Brian.

posted: 1 Jul 2014 12:11

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Hi Brian,

The TOLP peg position is on the Turnout road Opposite overall Length Position, i.e. opposite the end of the main road, not necessarily at the end of the turnout road. So it is working as intended.

It is mainly intended for use with parallel type V-crossings, so that additional templates can be pegged onto the loop line:

2_010649_540000000.png2_010649_540000000.png

The adjustable turnout road option (CTRL+F12) is not available with the parallel type of V-crossing, the turnout road always terminates at the same overall length as the main road, i.e. at the TOLP peg position.

If you want the peg in some other position, you can run it along the turnout road centre-line (or along the rails) using the CTRL+F8 mouse action.

The parallel type of V-crossing is something of an oddity and not often used. If I was starting Templot again I would probably not include it. But I can't now remove it without breaking existing .box files. It is useful if you want a return curve within a transition zone:

2_010718_160000000.png2_010718_160000000.png

(The prototype doesn't* put pointwork on a transition curve -- because of the impossibility of running a cant gradient through a moving switch -- but it's a handy device when fitting model track in a tight space.)

Adjusting the turnout road length with CTRL+F12 is intended to deal with short** gaps and overlaps after other templates have been aligned, and for use with partial templates. It's not intended to create a significant section of track -- for that you would use the tools > make branch track function to create a separate template (which might be quite short).

*never say never. :)  It would work on a flat transition as in a model, but I'm not aware of any examples.

**I have changed the default in the next program update so that you don't see a long turnout road initially.

regards,

Martin.

posted: 1 Jul 2014 14:21

from:

Brian Nicholls
 
Poole - United Kingdom

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Hi Martin,

Many thanks for your very detailed and clear response. :thumb:

I did/do understand what you have stated in your response, it was just a question if there was any other significance of the TOLP peg position now that the T O exit road can be manually adjusted, but as I say above, you have answered that quite clearly. :)

Many thanks again, all the best,

Brian.

posted: 1 Jul 2014 14:44

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Hi Brian,

I should perhaps have mentioned also the TRP position, which puts the peg at the Turnout-road position where the Return curve terminates and the parallel loop begins:

2_010939_340000000.png2_010939_340000000.png

After which you could click do > snap to peg menu item to snap the overall length back (or extend it) to this position.

regards,

Martin.

posted: 1 Jul 2014 15:33

from:

Brian Nicholls
 
Poole - United Kingdom

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Hi Martin,

Many thanks for the additional information, which is most useful. :thumb:

More reference notes to make in my Templot note book. :)

By the way, I think I may do an update on the 'Illustrated Peg Positions' document I did a little while ago.

Would this be of possible use for the Companion site ?

    (HTML of course)

Many thanks again, all the best,

Brian.



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