The Nautilus Drydocks is the world's premier supplier of kits, parts, components and resources dedicated to the hobby of remote controlled submarines. 



983 Tivoli Dr
Naples, FL  34104 USA
Phone: (239) 877-4280

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© 2020 by the Nautilus Drydocks. All rights reserved

SubDriver - 3" OD - Single shaft - 19.75" length



This Sub-driver (SD) is specifically designed to power, control, and produce the weight change required to operate radio-controlled model submarines as a static diving craft. 


This Sub-driver also has utility on any wet-hull type r/c model submarine that is large enough to accommodate the unit, employs a single propeller, and has an above waterline structure displacement of no more than sixteen ounces of fresh-water.


3" Sub-driver Specifications

  • 3" diameter, 19.25" long, 1/8" thick, machined Lexan SD cylinder
  • Forward dry space: 5.5"
  • Ballast tank: 5.5"
  • Aft dry space: 7.125"
  • ballast water weight is 16-ounces
  • LPB-MPC, ballast sub-system servo, safety float-valve, and  all SAS plumbing provided and tested
  • a horizontal type snorkel head-valve assembly comes ready for installation within the sail or hull
  • one spark-suppressed, installed and tested 12-volt brushed 380 size motor drives a single-shaft through a 3:1 gear-train
  • ballast tank after bulkhead has a foundation, and the Lexan cylinder is machined to receive gas ballast-sub system retro-fit kit


Recommended Devices and Accessories required to outfit this Sub-driver

(most items available from www.nautilusdrydocks.com)

two,  11.1-volt, 1,300mAh batteries and charger

  • one, 6-8 channel 27-75mHz or 2.4gHz  r/c system
  • one, BLM module
  • one, Y-type servo lead
  • one, AD2 (angle-keeper)
  • one, ESC
  • one, high-capacity BEC
  • three mini-sized servos
  • one, 1/2", 20-Ampere toggle-switch and watertight boot OR remote on/off switch


Bagged Items that come with the 3"

  • three, magnetic coupler sets
  • one, motor-bulkhead SAS manifold
  • one, bow-plane dumb-bell assembly
  • three, flexible hoses
  • one,  pushrod seal
  • one, horizontal type snorkel head-valve assembly
  • one, 2.4gHz antenna kit
  • one, power-cable strain-relief block
  • one, zip cord type power-cable
  • three, servo pushrods
  • various mechanical fastener