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Price: $525.00
Model: SI-PDMS-Takahashi
Average Rating: Not Rated

The Posi Drive Motor System (PDMS) can lift in Excess of 56 pounds.  This motor system attaches to the pinion shaft and not the reduction assembly which eliminates any slip and offers precise repeatability with heavier payloads.  The PDMS has 2.3 microns per step(.00009") which is 11,400 steps per inch.  The PDMS motor comes standard with an over-ride to allow for manually focusing with the COARSE focus knob.  The PDMS motor has the thermistor built onto the motor circuit board for temperature compensation.

Note:  The Takahashi must have the dual speed stock focuser in order for the PDM to work

Astronomy Technology Today Review

Installation instructions for Feather Touch focusers

Known To Fit Takahshi Dual speed stock focusers
Use with Focuser Boss II electronic focusing kit
Lifting Capacity In excess of 56 pounds
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