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Tomer Custom Gossett Block Variations

#10 #11 #12
#10 #11 #12
 
#13 #14 #15
#13 #14 #15

Overview


Modified Gosset BoxesDarrell Tomer made a number of variations of the original Gossett Block design, and displayed a number of these at the 1983 NSS Convention.sent them to me along with some other experimental devices of his. About a year later, he sent four of them (along with some other items) to me to add to my collection. He numbered the ones that he sent me arbitrarily, giving them device #10 through #13. These were versions M, H, E, and an unlabeled version on his display board shown in the photo. I later had him make two additional custom modifications to my specifications, and I assigned #14 and #15 to those. As you can see from the photo, there were a number of additional modifications that I did not acquire. Most of these were lightened boxes made by milling away unnecessary metal from the bodies.


Tomer #10
(#653)

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

Technical Details

Device #10 is 32 mm. long, 84 mm. wide, 41 mm. high, and weighs 178 g.

Comments

The first Gossett modification was device #10. This is simply a Gossett Box sawn in half to provide one roller per side. It would have to be bolted to a plate to be used.


Tomer #11
(#654)

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

Technical Details

Device #11 is 33 mm. long, 59 mm. wide, 41 mm. high, and weighs 173 g.

Comments

Device #11 is a double-roller designed for racing using the Gossett System and steel cables for the ascender slings. Darrell decided to try this after breaking his foot slings one year during the races at the NSS Convention. He fell, but landed on a crash pad and walked away unhurt.

There are too many pieces to get lost for me to consider this device for caving, but for racing in a gym, this isn't a concern.

Tomer #12
(#655)

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

Technical Details

Device #12 is 66 mm. long, 86 mm. wide and 41 mm. high.

Comments

Device #12 was made by milling away all the nonessential metal in a normal Gossett Block. The result was a considerable 55% weight savings: 166 grams versus 367 grams. This box became my normal chest box for nearly a decade, and I never missed having the second roller. (Of course, my system is set up so that if a roller blows, nothing bad happens).


Tomer #13
(#656)

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

Technical Details

Device #13 is 31 mm. long, 39 mm. wide, 41 mm. high, and weighs 72 g.

Comments

Device #13 is a cut-down Gossett Block with a single channel and only one roller. It has to be bolted to a plate to be used.


Tomer #14
(#657)

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

Technical Details

Device #14 is 66 mm. long, 58 mm. wide, 41 mm. high, and weighs 231 g.

Comments

Device #14 is my own design, which Darrell made for me. It is a single-channel box made for a ropewalking system. The upper roller was replaced by a cam, with the idea that with a sling to the seat harness, one could just sit down and rest. The seat sling has to be adjustable to permit this, this proved to be a hassle in the field, and I eventually gave up on the idea of integrating a cam into the box.


Tomer #15
(#658)

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

Technical Details

Device #15 is 65 mm. long, 58 mm. wide, 42 mm. high, and weighs 215 g. The quick-release pins are stamped "AVIBANK-4AR1.50."

Comments

Device #15 is another design of my own. It replaces the knobs used in #14 with quick-release pins. This version is easier to use than #14, but does not address the real problem: integrating a cam into the chest box just didn't work.