Number of tracks for turntable?
- I'm trying to figure out how many tracks to design my indexer to
accomodate. Right now I've got it spec'd at 16 tracks. Theoretically
a 6" diameter table could accomodate 30+ tracks but that seems like
an insane number.
What's the largest number of tracks anyone has seen accomodated by a
- Some roundhouses had lots of stalls. For most modelers, me included,
16 stalls is good enough.
Look at these roundhouse pics for reference:
Here is an ariel shot of a 180 degree roundhouse that has about 20
- Hi Robert
Thanks for the references. I think I'll go ahead and increase the
number of served tracks. Right now it's set at 16 which includes
roundhouse and approach (right word?) tracks. In addition I need to
steal one "track number" to enable a soft reset from a throttle. This
will allow the user to send the table to the home position in case
something causes the indexer to stall and slip counts, e.g. a
derailment. This would allow the TT to start over without having to
reset the whole layout.
I might be able to go up to 31 plus the "home" track.
- Well, my most recent find was the Spencer Locomotive Works of The
Southern Railway in North Carolina, and the roundhouse there has 37 bays
built around a 100 foot turntable. I think there were 15-20 different
approach tracks (I don't have any clear photos to confirm that).
Some photos from my trip Dec 2003:
The official web site:
John Duino <jduino@...>
> What's the largest number of tracks anyone has seen accomodated by aGood question!
I have a book at home, German text, title is (roughtly) "The last steam
engines in Germ. The tracks are so close together that there are
turnout/switch style 'frogs' near the turntable where the tracks
actually overlap each other before the turntable! The track from the
roundhouse door to the turntable pit is long enough that the doors can
close with an engine sitting in front of the doors but NOT on the
turntable. There are wood planks between the tracks at the 'frogs',
similar to a wooden railroad street crossing, presumably to permit
workers to walk around the turntable without having to step over so many
rails (probably to help keep snow out of that area as well.
I'm sure others will report on 360 deg. turntables that have appeared
over time. I don't know how many tracks that German turntable
accomodated but if you overlap tracks, you sure could put a LOT of track
down! Wouldn't that be a challenge in Z-scale! ;)