DN Specifications

F. Runner Base & Cut (Track)

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IDNIYRA OFFICIAL SPECIFICATIONS

REVISED MAY 2022
Note: Dimensions are given in inches in the English System (except as noted) and in millimeters (MM) in the metric system.

F. Runner Base and Cut (Track) English   Metric  
  Max Min Max Min
1. Longitudinal distance from pivot axis of steering runner to pivot
axis of aft runner:
103 97 2616 2464
2. Lateral distance between aft runner edges below pivot axis:
(To be measured with skipper in cockpit in sailing trim.
95 Opt. 2413 Opt.

 

INTERPRETATIONS OF THE OFFICIAL SPECIFICATIONS BY THE TECHNICAL COMMITTEE

Effective May 31, 2020

F. Runner Base and Cut (Track)

3/12/2007: Measuring F.2: In order to make repeatable measurements of runner cut as intended by this Specification the following methods should be used:

  1. Rigging should not be tight during measurement. The skipper must be allowed to loosen the rigging as required to relieve static tension.
  2. Sailor should be wearing normal racing attire, including helmet, goggles, etc.
  3. Mainsheet must be loose.
  4. The runners must be allowed to move. If on the ice, the boat may be pushed to allow the runners to seek a neutral position. If using a measurement fixture, the device must allow free sideways movement of the runners.
  5. The skipper should be in the cockpit in normal sailing position (lying in the cockpit with his shoulders against the seatback).