Aircraft

Max. Gross Weight

Max Rope Strength

Min. Rope Strength

Blanik L-23

1124

2248

899

1-26E

700

1400

560

 Blanik L-33 Solo

750

1500

600

Grob 103

1279

2558

1023

Rope

Tensile Strength

Use

5/16-in Nylon

2550 lbs.

Main Tow Rope

1/4-in Nylon

1650 lbs.

Weak Link: private ships

1/4-in Polypropylene

1250 lbs.

Weak Link: 1-26E and private ships

5/16-in Dacron (polyester)

1800 lbs.

Weak Link at Tow Plane and Glider

Permanently spliced onto tow rope

Weak Link

Use

1/4-in Polypropylene w/ Schweizer Ring

1-26E only

1/4-in Polypropylene w/ Tost Ring

L-33 and private ships

1/4-in Nylon w/ Schweizer Ring

Private ships

1/4-in Nylon w/ Tost Ring

Private ships

None on glider end

L-23 and Grob 103