Testing wire rope. Testing terminals. Testing rigging.
Care: log use, moisture, special stresses, inspections
How to inspect the condition of wire rope and rigged wire rope?
Inspection of tools used in rigging?
Notes from marine world. Open discussion on what applies and does not apply
to HG flying wires:
- Check tools
- swage sleeves
- stainless steel, aluminum, copper, or zinc-covered copper
- hand tool
- hydraulic swager
- oval swages (cold-rolled into an hour-glass
shape) The tube had to have met the ASTM-B75 standard.
- eye, eye splieces
- Nicopress fitting
- full rated strength
- stainless steel thimble
- standing rigging
- crimped wire fittings
- anhydrous lanolin
- just slightly beyond
- cavity tool
- wire splicing sleeve
- economy Nicopress swaging tool
- swage gauge
- things that can go wrong; inspecting for those events.
- Did the sleeve mash into the thimble?
- Does the final set fit the Go/NoGo tool properly?
- Is the sleeve the correct one for the wire?
- Oval sleeves for steel aircraft cable and wire rope
- finished eye splice
- Nicopress oval sleeve
- HG flying wire: Discuss plan copper versus zinc plated
- Cable size
- Number of grooves
- hand tool, bench tool heads, hydraulic tool die
- Sleeve: 18 series are plain copper
- Sleeve: 28 series are zinc plated copper
- Nicopress stop sleeve
- cable assemblies
AN100 cable thimbles. Distinguish between cadmium plated steel and the
stainless steel thinble
Load Lab Test
Results - Comparison of Swages with Sleeves and Tools from Different
Manufacturers SEE DISCLAIMER.
- Locoloc® Loos & Co.
- Proving one's tools?
- Types of finishing?
MS51844 specifications for swaging sleeves
- Match sleeve source with swaging tool source. Avoid mixing.
- standards for nominal breaking strengths
- performance criteria
- MS83420 (Mil. Spec.) compliant GAC
- “properly assembled using the manufacturer’s recommended tools and
- What sleeves and what tools were used to swaged the sleeves on your flying
cables? Do you have a check tool to verify the swage result?
- BS breaking strength
- Mil. Spec.
Galvanized Aircraft Cable
- 7x19 galvanized aircraft cable GAC is one of the most common, versatile
and cost effective wire ropes but is not to be
used for control cables or any other
aircraft use. So, why is it then called "aircraft" cable, if it is not to be
used for aircraft cable. The ungalvanized wirerope is
- "Wire rope is categorized by it's
construction of strands. 6x36, 6x25, 7x19, 6x19, 19x7 and more. Each
construction of wire rope can be galvanized or ungalvanized and comes in many
different diameters. Refer to the product information chart for breaking
strengths to help you determine the best wire rope for your project."
- "Rotation resistant 19x7 wire rope consists of an inner layer of strand
laid in one direction covered by a layer of strand in the opposite direction
which effectively counteracts torque and reducing rotation. A hanging or
lifted object resists the tendency to spin."
"Stainless steel wire rope is
used for applications that require corrosion resistant material. Stainless
steel wire rope is a staple in the maritime, food processing and water
treatment industries. Our material is either type 320/304 or type 316. Type
316 is less magnetic than 302/304 and is more corrosion resistant but costs
more and is not available in all sizes and constructions."
What is the effect of using a flying cable? Thermal bumps, stall
recoveries, gust bumps? Size of bumps, number of bumps of various sizes, etc.
- To well respond to replacement practices, one needs to well-know what is
the use and stress history of one's cables and parts.
- What about Spectra? Verify: [ ]
"most fraying of spectra fiber occurs internal to the
weave from internal abrading"
- Sleeve slippage?
- Consider study of second sleeve set good distance and with slight
looseness. Consider fatigue inside the first main sleeve. Consider have the
loose section as an indicator: looseness lost might mean slippage in first
sleeve. This needs full testing.
- Protecting one's glider from mysterious influences and strangers.
- Buying a used glider? One cannot know the actual history; you were not
- ball swage inside downtube? Inspection? How are those holding?
- Galvanized versus stainless steel? What did Avia Hang Gliders
- Shock load history of your glider?
- Use, abuse, transport coverage, storage environment
- Red: "Young cables are cheap life insurance."
- Front, side, rear, pull-back wires
- Detecting wire defects? Difficulty.