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watertight cylinders

Watertight cylinders (or WTC's as they are often called) are the heart and soul of an R/C submarine. Their main functions are to keep the electronics and battery of your boat dry during operation and to create a means of increasing or decreasing the buoyancy of the model through the use of a ballast system.

NOTE: Sales of most special order Subdrivers are temporarily suspended pending exciting news regarding that product line. Please email me with questions and stand by for updates!​


View or download Cylinder instructions by clicking on the links below:


MSD SubDriver Assembly Instructions

MSD SubDriver Operation and Wiring Overview 

Wiring overview for twin shaft brushless MSDs

BLHeli32 User Instructions (ESC for MSD SubDrivers)
Link to BLHeli configuration program download

Original SubDriver Assembly Photo Gallery

Type VII SubDriver Assembly Video walkthrough

SubDriver SAS ballast system description

Emergency Blow Ballast Sub-System
OTW Dive Modules (3.5 and 4.25" diameters)