boom vang (US) [R05]: A line or piston system on a sailboat used to exert downward force on the boom and thus control the shape of the sail. This is a kicking strap in the UK.

There are boom vangs available for one-design model yachts such as, CR914, DF65, DF95, IOM, Victoria, etc., but very few commercially available boom vangs for vintage models.

There is a very nice boom vang available in three sizes from Model Yacht Fittings.

There are assorted kicking straps available from SAILSetc that could be adapted to a vintage model yacht. These do look modern.

You may resort to making your own. The Walton vang, a very functional boom vang, is fairly easy to make with basic materials. And it can be attached easily to a vintage model.

Boom vang assembly from Model Yacht Fittings.
Walton boom vang.
Boom vang
Boom
Downhaul
Line
Main (sail)
Mast
Control loop
Bowsie
Eyelet
Mast tang

Source

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Related Articles

  • Stoudt, John. “2¢ Worth: Make a Metric Boom Vang.” The Model Yacht. 27:2. Summer 2026.
    • Parts for making a Walton boom vang are becoming hard to find. Here is a boom vang you can make with metric clevises, dune buggy turnbuckles, and your own two cents.
  • Walton, Ivor. “How to Make a Boom Vang.” The Model Yacht. 20:1. Spring 2019. pp. 16-18.
    • This article describes how to make a boom vang with a turnbuckle. It can be whatever length is needed to fit your boat and have either a brass or aluminum finish.
  • Walton, Ivor. “Spring-Loaded Boom Vang.” Model Yachting. 168. Summer 2012. pp. 21-22.
    • This article describes how to make a spring-loaded boom vang. The spring compression allows the boom to be pulled down lower than its normal position in order to tighten the leech under certain upwind sailing conditions.

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