PTC 4+ and PTC 5 — Coming Summer 2026

Due to unexpected price increases and import duties we have decided to offer the PTC4+ as well as the Model 5.

The PTC5 is in final stages of development and should be available soon. The utilizes an LCD touch screen that gives a lot of freedom developing a user interface. We had intended to sell it in the same price range as the old system but import duties have increased the price to higher than what we would like.

For that reason we have decided to redesign the PTC4 around the same motor and call it the PTC4+. It will be out by the end of the summer. There will be some comprises because of the limited user interface but it will work similar the the PTC5. It will use the same stepper motor as the model 5.

 

Check out our turntable pageTurntables. We are going to manufacture an entire line of turntables for HO and N.  

 
Thank you for your interest in the most advanced, reliable, and realistic turntable indexing system available today: the PTC Turntable Indexing Systems from NYRS – New York Railway Supply. 
Our indexing system is used all over the world with many very happy customers.
As always, feel welcome to contact us by phone or email with any comments or questions you may have about our system. Your feedback is appreciated.
Please visit the our product pages for more details. Also visit the Gallery page to see customer craftmanship.

The PTC Model 4 (Programmable Turntable Controller) is a user programmable turntable indexing system for use in new or existing N, HO, S, O, and some G scale turntables. The turntable’s indexing positions are programmed into the PTC by the user, who “teaches” the PTC where the lead and service track positions are. The PTC does not use infrared diodes, tab stops, or any mechanical methods for indexing. Once programmed, the PTC remembers the user’s track locations– even when the system power is turned off. During operation, the user selects the desired lead or service track from the control panel. The PTC then automatically determines the shortest direction of travel, simulates turntable momentum by ramping up the bridge to a user-determined maximum speed, then ramps it down as it approaches the desired service or lead track location. The PTC then stops the bridge at the exact location desired, within 0.025 degrees.
The basic PTC is comprised of the Track Selector Module, Stepper Motor, Motor Mount Kit (optional), and Power Supply.

The PTC is designed for users wanting to solve the problem of reliable turntable indexing. Situations where the PTC Model will be of benefit include:
  • Turntables with many lead and service tracks
  • Turntables where the tracks are hard to see, particularly those in corners or near the rear of the layout, or those with dim lighting.
  • Layouts with high quality, highly detailed rolling stock and bridge modeling where "hands off" indexing is preferred.
  • Any situation where reliable, accurate indexing will enhance layout operation and enjoyment.
"It's a clearly superior way to control a turntable in any model railroad scale"
Editor Andy Sperandeo, Model Railroader Magazine , December 1996.
"A very well made and thought out system."
Editor Bob Brown, Narrow Gauge and Short Line Gazette , July/Aug 1996.
“The PTC turntable controller is very elegant in design and provides excellent and accurate turntable indexing. It features a good user interface and installs easily… the PTC is a very good solution."
Editor and MMR Doug Geiger, Model Railroading, August 2000
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