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Old 01-31-2008 | 12:52 PM
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CGRetired
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From: Galloway, NJ
Default RE: 2-56 pull pull system

Here is the link to that web site with the Vinyl Coated Kevlar cord.


http://www.acp-composites.com/


Common consensus is to use the .038" cord. This works great. No stretch, strong, no extra metal going parallel to an antenna, and no cutting into clevis or turn buckles.


This is from their web page:

KEV-CORD
Kev-Cord is composed of an eight strand braided Kevlar® filament inner core surrounded with a high density vinyl jacket. This combination provides a control linkage that will not stretch and is protected from fraying by the vinyi coating. It is ideal for any application that requires a precise pull-cord actuator. Kev-Cord may be used with pulleys, threaded through guide tubes and used in tension unsupported. Each pack comes with four sleeves specifically sized for either the .038 or the .058 to be used for crimping a loop for attachment of the cable to a control horn.

Construction Hint:
For pull cables, the following cable rigging is recommended: At the surface, the cable termination can be accomplished by passing the Kev-Cord through the hole originally intended for the rod, putting an eight knot on the end of the Kev-Cord and pulling it back through the clevice fork. At the servo end of the cable, we recommend you slip the Kev-Cord through the hole in a rigging coupler and then use the sleeve provided to crimp the loop. The clevice can then be threaded on to the rigging coupler to allow adjustment ofthe control cables. Additional sleeves are available, six per package.

KEV-CORD CONNECTOR
Two 440 threaded connectors each of which has a hole running the full length of the connector that allows the .038" KEV-CORD to pass through the connector and be knotted on the end. Secure the knot with CA glue. A clevice can be threaded on to the connector over the KEV-CORD for attachment to control horns. The connector also incorporates a hex-head that can be turned with a wrench for adjustment of the pull pull lines.
CGr