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Bachmann On30 turn radius
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 Posted: Mon Mar 27th, 2017 05:13 am
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Kitbash0n30
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Helmut F wrote: Guys,
another question or two along the lines of turn radius: what track separation is needed for parallel runs? is that number different on curves and straights?
Yes.
Different plus the specific equipment you are running on the track.
On curves New York Central Pullman passenger cars will have greater overhang at center and ends than will a GW Ry brake van.

Last edited on Mon Mar 27th, 2017 05:15 am by Kitbash0n30



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 Posted: Mon Mar 27th, 2017 05:20 am
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Helmut F
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any suggestions? is there a safe number that covers everything?

what if I am targeting 'small' cars? no more than 20' scale ft long? 30'?

There is On30 GW stuff? That would be British, yes?

Thx!



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 Posted: Mon Mar 27th, 2017 05:32 am
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Kitbash0n30
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Helmut F wrote: any suggestions? is there a safe number that covers everything?


There is On30 GW stuff? That would be British, yes?

Thx!
1. Suggestions coming.
2. No, samples to illustrate a concept.
Edit, yes, the GWR, "God's Wonderful Railway" which of course was always said in earnest seriousness.

A safe number which covers everything? Not really, other than using up excess landscape by going too large just to be on the safe size.

--> Thing to do, if you have some cars and locos of size to be used, is put a piece of paper on a suitable surface then tack down track, flextrack works grandly, at different spacings and different curve radiuses, and observe what happens.

Steam locomotive in particular can have large overhang at front end on tight curves.

Note that car middle will overhang on inside of curve & car ends on outside of curve.
Those specific vales will vary by radius of curve, width of car, length of car, how far in from car ends the trucks are, ...

Are enough variable that experimental observation is best route to take.

And with test track pinned down with paper under it, one can hold a pencil to middle of car then at end corners of car to trace overhang to make templates.

that, plus the sizes of car and loco you presently have, plus what other sizes you can imagine ever wanting or having guests bring to run, will give you a personalized database to work from.

Last edited on Mon Mar 27th, 2017 05:40 am by Kitbash0n30



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 Posted: Mon Mar 27th, 2017 05:41 am
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Kitbash0n30
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Another factor - on mainline double track, mostly with HO and smaller, does one want to increase track center spacing to greater than scale to make room to get fingers on both sides of cars to lift off derailed cars?

Also applies to yards in most any scale, except G, I guess.

Last edited on Mon Mar 27th, 2017 05:45 am by Kitbash0n30



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 Posted: Mon Mar 27th, 2017 04:33 pm
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Helmut F
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Kitbash,
Thx. I have no On30 stuff yet. Trying to plan hence the question. That said, in NG stuff, one is not *likely* to have much parallel track, especially not in a small railroad.

Is that a *mostly* correct statement?

I did want at least one loop for continuous run for display and at the same time am trying to plan for the Christmas layout which is pretty much continuous run anyway.



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 Posted: Fri Jun 2nd, 2017 06:27 am
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Michael M
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The Uintah Railway out in southern eastern Utah had some pretty sharp curves.  The railway would mix in short cars between the longer cars just to make it around a curve.  The setup would be locomotive-short car-long car-short car-long car-short car.  There's a photo of it out there somewhere.

Could make for some interesting operations.  Heck, there seems to be a prototype for just about anything.  Just take a look at all the different rail cars and critters out there.



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 Posted: Fri Jun 2nd, 2017 06:30 am
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Michael M
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KitbashOn30

Can you really get an Athearn SW1500 around a 9 inch radius curve without any modifications?

If so I gotta get me one and try it out.



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 Posted: Fri Jun 2nd, 2017 08:19 am
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Kitbash0n30
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Yes, the old 1970s, 1980s, blue box ones which were actually SW7. I think Athearn eventually relabeled them. I have not had a newer one and therefore can not give info ion it.



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 Posted: Sun Jun 4th, 2017 10:15 am
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Si.
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Hi Stan & other On30 track planners :wave:


This conversation has the basic important stuff in it.


What radius will my stock work on ?

How much track can I fit in my space ?


:moose:


Si.


Building sizes are another thing of course.



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 Posted: Sun Jun 4th, 2017 04:30 pm
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Helmut
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@Michael M
Morro Castle curve 66degrees, 7.5%



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