Aristocraft Curves
- Thread starter DRG11
- Start date
Hi
count the sleepers and then have a look on jeremys site at his pictures
http://www.dragon-gscale.co.uk/aristo-craft-156-c.asp
Tony
count the sleepers and then have a look on jeremys site at his pictures
http://www.dragon-gscale.co.uk/aristo-craft-156-c.asp
Tony
steve parberry
G Scale Trains
aristo curves are very hard to establish
best thing is to join them all up and then put a tape across the half circle
best thing is to join them all up and then put a tape across the half circle
GrahamMills
Many & various. In G scale it is American Diesel.
As Steve has indicated it is very hard to tell and it is not helped by AristoCraft sometimes producing 16 to a circle and at others 18.
The sleeper count should help but there is of course the variation between Europeans and American sleepers.
I have been meaning to go down the sleeper count route. Must do some counting this weekend.
The sleeper count should help but there is of course the variation between Europeans and American sleepers.
I have been meaning to go down the sleeper count route. Must do some counting this weekend.
bobg
Registered
There is a way to calculate the radius of a circle from a small part of it, say two or three pieces of track. I haven't got the formula to hand but it works like this.... measure a set distance straight across the curve (a cord), perhaps a couple of feet, and measure the off-set i.e. the distance from the centre of that cord to the curve. It is then possible to work out from that the radius. I'm sure the exactitudes can be found in Google.
GrahamMills
Many & various. In G scale it is American Diesel.
The main problem with that technique is that you need to measure across the middle of the track where there is a space. I guess that you could measure the inside and outside rail lengths and average the two figures. It should be possible with only one piece of track but your measurements need to be very accurate since errors will multiple. Obviously easier with several pieces of the same curved track but then by the time you get to 3 or 4 you probably have a quarter circle which should be easy to measure. Having said that when I tried it I found it hard to tell if I had 10' or 11' diameter curvesbobg said:
: I just counted the sleepers on my AristoCraft 15' curves and got 32 whereas my 10' curves have 25 sleepers. However I have a box that claims to hold 10' curves and the number of sleepers is 28.
Theorectically they are all European sleepers. :thinking:
bobg
Registered
Graham, measure only the inside rail and add half the gauge to the end result, the circle centre for both rails is the same. Yes you do need to be reasonably accurate with the measuring but there will only be so many radiuses supplied by Accucraft you should be able to determine which one is closest to your result.
Rhinochugger
Retired Oik
Good thinking, that's how they lay curved tracks in the 1:1 world - offsets from a chord.bobg said:
Well, they don't know that's how they do it any more 'cos they just key the data into a computer on the side of the Theodolite or even more advanced electronic thingamyjig, and it does the work for them. But in my day, when setting out roads, that's how we did it (end of old fart rumblings)
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