British Upholder class submarine in 1/50th scale

This is a commissioned build for a customer that will involve a basic RC buildup of Bob Dimmack's excellent OTW Upholder kit in 1/50th scale. It will be built using one of his Dive Modules.

Here are some quick stats on the Upholder:

Type: Submarine
Displacement: 2,455 tonnes (2,416 long tons)
Length: 70.26 metres (230.5 ft)
Beam: 7.2 metres (24 ft)
Draught: 7.6 metres (25 ft)
Propulsion: Diesel-electric- 1 shaft
2 × Paxman Valenta 2,035 hp (1.517 MW) 1600 RPA SZ diesels (3.035 MW total)
1 × GEC electric motor (5 MW)

12 knots (22 km/h; 14 mph) (surface)
20 knots (37 km/h; 23 mph)+ (submerged)

Range: 8,000 nmi (15,000 km; 9,200 mi)
Complement: 48

Sensors and processing systems:
Sonar: Type 2040 active/passive bow, Type 2041 micropuffs, Type 2007 flank, Type
2046/CANTASS MOD towed array, Type 2019 active intercept

Armament: 6 x 21-inch (533 mm) torpedo tubes (18 Mark 48 torpedoes)

View most recent update

November 9, 2015

Work officially commenced on this project and begins with setting up the bulkheads in the lower hull section to accept the Dive Module. These were drafted in Google Sketchup and printed on my Makerbot 3D printer in PLA plastic.

Installation of the cylinder is very fast and smooth. Simply remove one stainless bolt in the front section, slide the entire dive module forward, and it comes free easily.

The main drive battery selected in a 5000mAh NiMh pack at 12V.

December 22, 2015

I'd say that it's really now that the project really got going. Check out the two videos attached to see progress and where I'm at with the boat right now!

January 14, 2016

I've completed work on the control surfaces for the boat. The rudders and dive planes have been installed using the supplied brass bushings from OTW and linkage arms run to the cylinder. Everything has been tested and works well with no binding and smooth transitions.

The interior of the boat has been primed for a nice, clean finish! Check out the video for more details!

January 28, 2016

More progress on this build. This last batch of work focused on getting the hull alignment correct through the use of orienting teeth on the upper and lower hulls. I also worked on detailing the hull surface with cutting out the sonar panels and exhaust openings.

Periscopes were fabricated with my trusty 3D printer and some brass tubing. They're fully removable for transport.

Check out the video below for all the skinny!