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R. C. Schroeder

Version A Version B Version C
Version A Version B Version C
Version D Version E Version F
Version D Version E Version F

Overview


Version A
(#641, 2609)

Front View: Closed Top View
Front View: Closed Top View
 
Open for Rigging
Open for Rigging

Technical Details

I acquired my R. C. Schroeder, Version A box from R. C. Schroeder t the 1992 NSS Convention. I acquired another in 2017 as part of Bob Thrun's collection.

My R. C. Schroeder, Version A is 37 mm. long, 85 mm. wide, 48 mm. high, and weighs 135 g. It is a single channel chest box made this chest box out of stainless steel sheet metal, a quick release pin, and a nylon roller. The box hinges at both sides (note the ends on the hinge pins welded to the frame). Pulling on the quick release pin allows the box to swing open. The box has a 25 mm. tall channel for attaching the box to a chest harness.

There are no markings on this box.

Comments

Like all narrow chest boxes, this one causes the harness to pull away from the chest, somewhat constricting my breathing. The roller is too long for the channel, and binds at the sides. The mechanism is stiff, and it takes too much force to get it to open.


Version B
(#2610)

Front View: Closed Top View
Front View: Closed Top View
 
Open for Rigging
Open for Rigging

Technical Details

I acquired my R. C. Schroeder, Version B in 2017 as part of Bob Thrun's collection.

My R. C. Schroeder, Version B is 63 mm. long, 98 mm. wide, 48 mm. high, and weighs 211 g. It is a single channel chest box made this chest box out of stainless steel sheet metal, a quick release pin, and a nylon roller. The box hinges at both sides (note the ends on the hinge pins welded to the frame). Pulling on the quick release pin allows the box to swing open. The box has a 25 mm. tall channel for attaching the box to a chest harness.

There are no markings on this box.

Comments

Like all narrow chest boxes, this one causes the harness to pull away from the chest, somewhat constricting my breathing. The roller is too long for the channel, and binds at the sides. The mechanism is stiff, and it takes too much force to get it to open.


Version C
(#2611)

Front View: Closed
Front View: Closed
 
Top View
Top View
 
Open for Rigging
Open for Rigging

Technical Details

I acquired my R. C. Schroeder, Version A box from R. C. Schroeder t the 1992 NSS Convention. I acquired another in 2017 as part of Bob Thrun's collection.

My R. C. Schroeder, Version C is 63 mm. long, 255 mm. wide, 74 mm. high, and weighs 485 g. It is a single channel chest box made this chest box out of stainless steel sheet metal, a quick release pin, and a nylon roller. The box hinges at both sides (note the ends on the hinge pins welded to the frame). Pulling on the quick release pin allows the box to swing open. The box has a 52 mm. tall channel for attaching the box to a chest harness.

There are no markings on this box.

Comments

This wide box has a curve that fits my chest nicely, making it more comfortable to wear between drops. Made from multiple layers of stainless steel welded together, it is certainly rugged, but also far too heavy for a single-roller box.


Version D
(#684)

Front View: Closed
Front View: Closed
 
Open for Rigging
Open for Rigging
 
Top View
Top View

Technical Details

I acquired my R. C. Schroeder, Version D from R. C. Schroeder at the 1995 Speleofest.

My R. C. Schroeder, Version D is 38 mm. long, 240 mm. wide, 51 mm. high, and weighs 167 g. It is a single channel chest box consisting of a skeletonized back plate and a single plastic roller with a side-entry gate. The gate that opens by pushing the button on the frame side of the roller, then pivoting the gate out of the way. The back plate has 26 mm. tall vertical slots for attaching the box to a chest strap and 25 mm. wide horizontal slots for attaching shoulder straps.

There are no markings on this box.

Comments

This box is nicely made, and the skeletonized design reduces its weight considerably. With only one roller, it is unsuitable for the Mitchell system, but works well for double-bungee rigs. The vertical slots are too short for the parachute webbing normally used for chest harnesses, so one would use 25 mm. webbing sewn to wider webbing if one wants the comfort of a wider chest strap.


Version E
(#770, 2651)

Front View: Closed
Front View: Closed
 
Open for Rigging
Open for Rigging
 
Top View
Top View

Technical Details

I acquired my R. C. Schroeder, Version C from R. C. Schroeder in 2002. I acquired another in 2017 as part of Bob Thrun's collection.

My R. C. Schroeder, Version C is 177 mm. tall, 45 mm. wide, and 49 mm. thick, and weighs 191 g.

The back plate for this chest box is 4.8 mm. aluminum, and has six slots milled for attaching a chest harness. A 43.5 mm. long, 25 mm. high, 13 mm. thick aluminum block is bolted to the plate with two stainless steel countersunk Allen-head screws. A 7.5 mm. stainless steel axle pressed into the block 27.5 mm. from the back plate supports a rubberized plastic, ball-bearing mounted pulley and a pivoting side plate. The side plate has a push-button that unlocks when depressed, allowing the plate to open. An O-ring seal keeps dirt and mud out of the locking mechanism.

There are no markings on this box.

Comments

This is a very nicely made chest box, and is quite light for a full-plate box. The side piece turns easily, although one can feel the drag created by the O-ring - this isn't something that one can casually "flip" open. Overall, I like this box.


Version F
(#789)

Front View: Closed
Front View: Closed
 
Open for Rigging
Open for Rigging
 
Top View
Top View

Technical Details

The back plate for this chest box is aluminum, 215 mm. wide, 57 mm. high, and 6.5 mm. thick, and has four slots milled for attaching a chest harness and three holes for bungee pulleys. A 43.5 mm. long, 28 mm. high, 26 mm. thick aluminum block is bolted to the plate with two stainless steel countersunk Allen-head screws. A 7.5 mm. stainless steel axle pressed into the block 27.5 mm. from the back plate supports a rubberized plastic, ball-bearing mounted pulley and a pivoting side plate on each side. The side plates have push-buttons that unlock when depressed, allowing the associated plate to open. An O-ring seal keeps dirt and mud out of the locking mechanism.

There are no markings on this box.

Comments

Like Version E, this is a nicely made box. The back plate is heavier, and I think it could be lightened, as could the central block.