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Luff Adjuster Cunningham Line Lead Eye

Colin Mason from Scarborough MYC has submitted a gadget that can help anyone setting up a Bantock type rectangular main boom.  Details below:

Application: For standard goose neck (i.e.not for Ball Raced type) and SAILSetc spar section booms

When assembling a main boom assembly have you ever wondered how to best lead the luff adjustment arrangement.  Here’s a reasonably simple way to create an eyelet lead that gives a reasonably friction free operation.

Parts Required (From SAILSetc)

  1. Main boom forward end for SAILSetc spar – Product code. 103-SE
  2. Tang. Stainless steel, (As provided with many SAILSetc gooseneck/kicking strap units. A hole is available to insert the modified hook). Product code. 103T-100
  3. Hook – wire. (Formed from 1.2 mm dia stainless steel wire). Product code. 087B
  4. Line and Bowsie of choice.

As you will see the Hook (III)has been altered with a little plier work.  This alteration makes it possible to put through small hole in the Tang (II) and align with the centre of the Main Boom forward end fitting (I).
Use masking tape to mark where the re-shaped hook arrives at the front end of the forward end (I) fitting – mark and drill a 1.2mm hole (1mm for a tight fit) – assemble and apply cyano’ if required.

Its straight forward once the mod is assembled – if you have any questions please feel free to contact me (Colin Mason, Scarborough MYC – see club details page).

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