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Tow Rope Guide
Revised 10/29/2011
Aircraft Weights and Allowable Rope Strengths
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Aircraft
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Max. Gross Weight
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Max Rope Strength
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Min. Rope Strength
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Blanik L-23
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1124
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2248
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899
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1-26E
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700
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1400
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560
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Grob 103
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1279
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2558
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1023
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Typical Tensile Strengths
Rope
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Tensile Strength
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Use
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5/16-in Nylon
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2550 lbs.
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Main Tow Rope
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1/4-in Nylon
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1650 lbs.
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Weak Link: private ships
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1/4-in Polypropylene
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1250 lbs.
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Weak Link: 1-26E and private ships
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5/16-in Dacron (polyester)
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1800 lbs.
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Weak Link at Tow Plane and Glider
Permanently spliced onto tow rope
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Weak Link Selection
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Weak Link
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Use
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1/4-in Polypropylene w/ Schweizer Ring
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1-26E only
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1/4-in Polypropylene w/ Tost Ring
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Private ships
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1/4-in Nylon w/ Schweizer Ring
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Private ships
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1/4-in Nylon w/ Tost Ring
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Private ships
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None on glider end
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L-23 and Grob 103
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