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 3817
track sections | System A | Number of 3807
track sections |
Mainsail luff length | Mainsail luff length |
ft | m | | |
|
19'7" - 26'3" | 5.98 - 8.00 | 4 | 26'4" - 33' | 8.03 - 10.06 | 5 |
|
26'4" - 33' | 8.03 - 10.06 | 5 | 33'1" - 39'9" | 10.08 - 12.11 | 6 |
|
33'1" - 39'9" | 10.08 - 12.11 | 6 | 39'10" - 46'5" | 12.13 - 14.16 | 7 |
|
39'10" - 46'5" | 12.13 - 14.16 | 7 | 46'6" - 53'2" | 14.19 - 16.21 | 8 |
|
| | | | 53'3" - 59'11" | 16.24- 18.26 | 9 |
|
| Track extends above sail luff. Using screwpin endstop kits will increase lengths. |
|
System B | Number of 3844
track sections | System C | Number of 3853
track sections |
Mainsail luff length | Mainsail luff length |
ft | m | | |
|
39'10" - 46'6" | 12.13 - 14.17 | 7 | 53'8" - 60'5" | 16.36 - 18.42 | 9 |
|
46'7" - 53'3" | 14.19 - 16.23 | 8 | 60'6" - 67'3" | 18.45 - 20.50 | 10 |
|
53'4" - 60' | 16.25 - 18.29 | 9 | 67'4" - 74'1" | 20.53 - 22.58 | 11 |
|
60'1" - 66'9" | 18.31 - 20.35 | 10 | 74'2" - 80'11" | 22.61 - 24.66 | 12 |
|
66'10" - 73'6" | 20.37 - 22.44 | 11 | 81' - 87'9" | 24.69 - 26.74 | 13 |
|
| | | | 87'10" - 94'7" | 26.77 - 28.82 | 14 |
|
| | | | 94'8" - 101'5" | 28.85 - 30.90 | 15 |
|
| Track extends above sail luff. Using screwpin endstop kits will increase lengths. |
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 jamming the sail in the groove.
Contact
If you have any questions, please contact your dealer or Harken Technical Service.
