1. Determine System Size
The four sizes, Systems AA, A, B, and C, are based on sail area. If you need to reduce car stack height on mast, contact Harken about our Switch T-Track Battcar Systems.
Monohulls
System size | Maximum sail area | Typical boat length | ||
ft2 | m2 | ft | m | |
AA | 350 | 32 | to 37 | to 11.3 |
A | 600 | 56 | 37-50 | 11.3-15.2 |
B | 900 | 83 | 50-60 | 15.2-18.3 |
C | 1940 | 180 | 60-90 | 18.3-27 |
Multihulls
System size | Maximum sail area | Typical boat length | ||
ft2 | m2 | ft | m | |
AA | 275 | 25 | to 30 | to 9.1 |
A | 500 | 46 | 30-40 | 9.1-12.2 |
B | 700 | 65 | 40-50 | 12.2-15.2 |
C | 1510 | 140 | 50-70 | 15.2-21 |
2. Determine track quantity and type
Use Mainsail Luff Length chart to determine number of track sections.
Mainsail Luff Length
System AA | Number of track sections | System A | Number of track sections | ||
Mainsail luff length | Mainsail luff length | ||||
ft | m | ||||
20 ' 10" - 27' 6" | 6.35 - 8.38 | 4 | 27' 9" - 34' 5" | 8.46 - 10.49 | 5 |
27' 7" - 34' 3" | 8.41 - 10.44 | 5 | 34' 6" - 41' 1" | 10.52 - 12.52 | 6 |
34' 4" - 40' 11" | 10.47 - 12.47 | 6 | 41' 2" - 47' 10" | 12.55 - 14.58 | 7 |
41' 0" - 47' 8" | 12.50 - 14.53 | 7 | 47' 11" - 54' 7" | 14.61 - 16.62 | 8 |
54'8" - 61'4" | 16.66 - 18.69 | 9 | |||
System B | Number of track sections | System C | Number of track sections | ||
Mainsail luff length | Mainsail luff length | ||||
ft | m | ||||
41'6" - 48'2" | 12.65 - 14.68 | 7 | 56'3" - 61'6" | 17.15 - 18.75 | 9 |
48'3" - 54'11" | 14.71 - 16.74 | 8 | 61'7" - 68'4" | 18.77 - 20.83 | 10 |
55'0" - 61'8" | 16.76 - 18.80 | 9 | 68'5" - 75'2" | 20.85 - 22.91 | 11 |
61'9" - 68'5" | 18.82 - 20.85 | 10 | 75'3" - 82' | 22.94 - 24.99 | 12 |
68'6" - 75'2" | 20.90 - 22.91 | 11 | 82'1" - 88'10" | 25.02 - 27.08 | 13 |
88'11" - 95'8" | 27.10 - 29.16 | 14 | |||
95'9" - 97'2" | 29.19 - 29.62 | 15 | |||
Slug-mount: Most common. Requires 1 slug-mount kit per track section. Select slug that matches the mast's bolt rope groove shape.
Drill-tap: For masts without a bolt rope groove. Requires 1 splice link at each track joint.
3. Choose endstop kit
Quick-release: Includes screwpin or pinstop endstop for bottom of mast and fixed endstop for the top.
Fixed: Includes two fixed endstops.
4. Choose cars
Order 1 headboard, 1 Battcar for every full batten, and use the Intermediate Car Chart to determine number of intermediate cars.
Intermediate Cars
 Intermediate Car |
Distance between battens* | Intermediate cars between battens | |
ft | m | |
8 or less | 2.4 or less | 1 |
9-13 | 2.7-4 | 2 |
14-16 | 4.3-4.9 | 3 |
| *Boats without full battens should use 1 intermediate CB or Slider car per 1.2 m (4 ft) and no Battcars | ||
CB system: All captive ball bearing components. Lowest friction system for fast sail hoists, douses, and reefs.
Combination system: CB headboard and Battcars, Slider intermediate cars. Reduces cost but uses CB in the most critical load areas.
Slider system: All Slider components. Raise and lower sails without battling a sail that gets jammed in the groove.
Contact
If you have any questions, please contact your dealer or Harken Technical Service.
Copyright© 2008 Harken, Inc. All rights reserved
