Gary and all,
I started 30+ years ago with a kitbashed Ministructure turntable
and a largely scratch built four stall roundhouse using salvaged
Ministructure parts. At one time these were pictured on Don Thompson's
(SHS) photos, although they have probably been replaced. Because my
turntable is out of reach from my aisle I powered the turntable with a New
York Railway Supply remote controller. However, the turntable was too crude
to be processed by the controller so I removed it and replaced it with an
AAA Precision Turntable. You say at one time they were available. I assure
you they are still very much available and produce a beautiful piece of
machinery. They have their own controller but since I already had the NYRS
unit they made mine to fit the NYRS controller. That too is still very much
available. I did run into a problem because a heavy engine caused the
bridge to move just enough to derail. Meanwhile NYRS recognized this
problem and have added a very clever automatic shaft brake which locks the
shaft as soon as the bridge is in position and the motor stops. I just
reassembled mine with the new brake and from my preliminary tests it looks
great. Neither is cheap but for the price of an imported steam engine you
can have a beautiful working accessory! If you want addresses contact me
off list. Wally Collins
-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
Gary Chudzinski
Sent: Friday, May 26, 2006 6:05 PM
To: S-ScaleList
Subject: {S-Scale List} Roundhouse/Turntable dimensions
Billy C (and Bill L),
Looks like you got a handle on it......gone thru the math, etc. The
one time the turntable diameter might be critical is if you are trying to
scale out a proto railroad setup, where you want to match up the bridge
length, and number and angle of the stalls. Did this one time based on
available turntables. Rails can get a little close, or even cross, if
roundhouse is set back too far, just as you mentioned. At one time, an
outfit called AAA Turntable made a pretty nice custom unit and would index
the table based on your roundhouse angle spec's. I think Bowser still
makes varied length tables, but as I recall, a lot of backlash on the
travel.
Gary Chudzinski
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