Mouse over the picture to see a short description of each part of the Balrog. Click on a part for more information. If neither of those things work because you’re using an ancient or crippled web browser, just scroll down the page.
| plinth |
600 lb machined granite block, approximately 30″ x 30″ x 8″ with an 8″ diameter hole lined with a 1″ stainless steel tube in center-back, was probably a base for a machine of some kind or an optical device
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| vibration mounts |
four large cast iron and rubber motor-mount type bushings (not shown)
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| stand |
100 lb stand on castor wheels made of 1/4″ steel plate (not shown)
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| note |
the plinth, vibration mounts, stand and castor wheels are a single manufactured unit
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| shelving |
MDF bottom and middle shelves with modeling clay and dynamat damping, fitted plywood top shelf (not shown)
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| sub plinth |
8″ diameter 1″ thick aluminum CNC machined sub-plinth bolted to stainless steel liner in 8″ hole (partly visible under the front of the platter)
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| platter |
VPI HW Jr 1″ thick acrylic platter with a 4 lb lead plate epoxied to underside of platter
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| bearing |
VPI HW Jr bearing with Delrin sleeve bearings and a steel thrust plate with a piece of Teflon on top (not visible)
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| record clamp |
two piece acrylic and Delrin VPI clamp
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| motor housing |
lead shot filled plywood box with height, tilt, and offset/tension adjustments
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| motor |
12VDC Maxon model 110191
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| power |
12V 7Ah sealed lead-acid battery (not shown)
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| pulley |
brass pulley from diyaudio group buy
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| motor controller |
Mark Kelly’s DC motor controller
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| drive belt |
spliced mylar tape
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| tonearm |
Rega Moth RB300
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| tonearm mods |
removed VTF spring, rewired with Cardas 33g wire, steel end stub and steel counterweight damped with lead tape
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| tonearm damping paddle |
buss wire hammered into a paddle on one end, paddle bent to damp in horizontal and vertical planes, friction-fit to the tonearm end stub
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| tonearm damping pot | |
| VTA adjuster |
VPI dual cylinder type for RB300 with grub screws (not visible)
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| height measurement |
12″ digital height gauge (not shown)
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| armboard |
1/2″ aluminum plate
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| dust cover |
permanent, hinged 3/8″ and 1/8″ plywood with constrained layer damping and foam edge seals, painted white inside to reflect light onto turntable
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| dust cover mount |
plywood, piano hinge
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| dust cover seal |
plywood
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| cartridge |
Shelter 901 and metal protector
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| viewing aid |
white paper cardstock reflects light and provides a high contrast background to the stylus when cleaning it
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| interconnects |
Cardas something-or-other bulk cable hard-wired to tonearm leads in the arm pillar (not visible)
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| cable shielding |
3′ long 1″ diameter spiral steel conduit around interconnects
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| conduit mount |
wood, conduit clamp, screws
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| hour meter |
Honeywell LCD hourmeter module controlled by a micro-switch in the tonearm rest (see this screenshot of long gone webpage with the design)
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| leveling system |
2.5 ton car floor jack, carpenter’s levels, shims under wheels (not shown)
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Orion Gateway 