Thrifty Telescoping Tube Kit

Features:

• Kit includes 39" long constant force springs that provide teams design flexibility. Customize the length of your tube stages for maximum extension if the game challenge requires it.
• Ability to run lift cable internally through the center of the tube stages
• Tubes are supported by bearings on all 4 faces in each stage
• Lightweight kit means your climber is lighter - the climber in the video shown below weighed roughly 4 pounds.
• This kit can easily be assembled with a power drill and hand tools.
• You can find 1/16" wall aluminum at McMaster-Carr or Online Metals -
  • 2" x 2" x 1/16" - https://www.mcmaster.com/6546K8
  • 1.5" x 1.5" x 1/16" - https://www.mcmaster.com/6546K1
  • 1" x 1" x 1/16" - https://www.mcmaster.com/6546K53

Included in the Base Stage Kit:

Part Name	Quantity
2.75" 8-32 Alloy Steel Socket Cap Screw	2
10-32 Button Head Screw 3/8" Long	2
8-32 18-8 Stainless Steel Thin Nylock	2
1/4-20 18-8 Stainless Steel Thin Nylock	4
2.75" 1/4-20 Alloy Steel Button Head Screw	4
1/4" Diameter x 1 3/8" Steel Dowel	2
1/2" OD x 1/4" ID x .188" WD Bearings	8
2x2 Aluminum Plate	2
2X2 Stage Internal End Block	1
5.94 lbs pull Constant Force Spring 39" Long	2
CF Spring Roller	2
CF Spring Spacer Retainer - 2" Stage	4
1.122" Spacer	2
1/4" Spacer	4
3/16 Rivets	4

Included in the 2nd Stage Kit:

Part Name	Quantity
2.25" 8-32 Alloy Steel Socket Head Screw	2
8-32 Button Head Screw 5/16" Long	2
2.25" 1/4-20 Alloy Steel Button Head Screw	4
8-32 18-8 Stainless Steel Thin Nylock	2
1/4-20 18-8 Stainless Steel Thin Nylock	4
3/16 Rivets	4
1/4" Diameter x 1" Steel Dowel	2
1/2" OD x 1/4" ID x .188" WD Bearings	8
5.94 lbs pull Constant Force Spring 39" Long	2
CF Spring Roller	2
1.5x1.5 Aluminum Plate	2
1.5X1.5 Stage Internal Block	1
CF Spring Retainer - 1.5" Stage	4
.75" Spacer	2
.188" Spacer	4

Included with each order:

Part Name	Quantity
Dyneema Cable - 1/8" Thick - 25 ft	1

 

STEP file of both assembly stages here

Assembly guide PDF located here

Stage 1 Kit Weight without 1/16" Tube: 0.75 lbs

Stage 2 Kit Weight without 1/16" Tube: 0.60 lbs