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Minimum Radius

Postby Nutter » Mon Dec 16, 2019 12:36 pm

Stupid but simple question
21m motorised chassis what is the minimum radius I can use?
There will be no other rolling stock on the line chassis is in a railbus.
Mike
DON'T knock it at least I am trying to do something, with only one good hand.
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Re: Minimum Radius

Postby rail450 » Wed Dec 18, 2019 11:07 am

Hello, Mike,
you ask for the smallest possible radius...but not the smallest possible radius

but the smallest true to scale radius is important.

In the standards of European Model Railways (NEM), the

smallest arc radius is defined as follows:


Smallest recommended arc radius = 25 x G (gauge) .... up to 45 x G

BR,

Siegfried
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Re: Minimum Radius

Postby rail450 » Thu Dec 19, 2019 10:09 am

edit:

In the standards of European Model Railways you can also find the capture

cant in the track curve
......
In model railway operation, a superelevation is possible from the
not necessary for dynamic reasons; they require
even increases the risk of vehicles tipping inwards. For this reason, one should be made of
The value of the excess applied for the reasons given must not exceed G/15. recommended:

gleisueberhoehung.jpg
gleisueberhoehung.jpg (14.47 KiB) Viewed 355 times


thus the superelevation is calculated for t-gauge

sin a = 0.185mm/3.0mm and the cant angle a = 3.5°.

BR,

Siegfried
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Re: Minimum Radius

Postby Nutter » Sat Jan 04, 2020 3:08 pm

Sorry have not replied to this earlier but other things got in the way.
The reason for my original question is I was asked to produce something that needs to take up as little space as possible (Scale is not an issue here because using T to represent a 1m NG Z line (fictitonal))
The rolling stock will also be used at a later date on a layout more to scale.
Mike
DON'T knock it at least I am trying to do something, with only one good hand.
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