149
3847
3848
3866
3845
3846
3864
3850
3851
3865
3844
3846
3848
3851
3845
3847
3850
R27
3864
3865
3866
C10879
3954
3954
3849
3954
System B
About CB and Slider Battcar 
systems: see feature pages 
at beginning of this section.
Track Mounting Kits: Slug Mount*
*Includes M6 x 1.0 x 20 or 30 mm fasteners; weights include fasteners; not for flanged track.     **For Selden mast section C installations.
Mounting Kits and Endstops
Mounting kit slugs are available for flat or round mast grooves. 
Order one kit per track section.
Use pinstop endstop to easily remove cars and mainsail. Order one kit only.
Endstop Kits: Slug Mount*
Mounting kit
Endstop kit/pinstop
Endstop kit/fixed
Mounting kit
Endstop kit/pinstop
Endstop kit/fixed
Slug-mount 
track
Mast Track
3844 track mounts to mast using a unique slug system that allows mast-up installation.
Use flanged track when mounting to carbon spars. Track features a groove for racing sails 
with boltropes or slugs. Use C10879 endstop feeder kit to easily raise sails with boltropes.
Traveler Track: Drill/Tap
For masts without internal sail track, attach R27 Midrange traveler track by drilling 
and tapping the spar. Join track sections with splice links. Order one per track
section. Order one low-beam endstop (sold in pairs).
Midrange 
traveler track
Flanged track
Mounting kit
Endstop kit/fixed
Endstop kit/pinstop
MOUNTING KIT
ENDSTOP KIT/FIXED
ENDSTOP KIT/SCREWPIN
*Track extends above 
sail luff. Using screwpin 
endstop kits will increase 
lengths.
ENDSTOP/FEEDER KIT
*Use with 3849 flanged track. Contact Harken for price and lead time.
27 mm (1 1/16")
14 mm
9/16"
51 mm (2")
21 mm
13/16"
27 mm
1 1/16"
25 mm
1"
14 mm
9/16"
Mainsail luff  length
Number of 3844
track section
ft*
m*
39'10" - 46'6"
12.13 - 14.17
7
46'7" - 53'3"
14.19 - 16.23
8
53'4" - 60'
16.25 - 18.29
9
60'1" - 66'9"
18.31 - 20.35
10
66'10" - 73'6"
20.37 - 22.44
11
Part
No.
Description
Splice link
Endstop
Ordering
information
Fastening
method
R27
Midrange track
1619
E2700
Page 109
Drilling and tapping
Part
No.
Description
Mounting slug
Mounting
slugs/kit
Connector slug
Connector
slugs/kit
Fits fl at mast groove gap
Length
Weight
Length
Weight
Min
Max
in
mm
oz
g
in
mm
oz
g
in
mm
in
mm
 3845 
 Round mast groove 
 7/8 
 22 
 0.43 
 12 
 19 
 3 
 76 
 1.27 
 36 
 1 
 7/16 
 11 
 5/8 
 16 
 3846 
 Flat mast groove 
 7/8 
 22 
 0.56 
 16 
 19 
 3 
 76 
 1.71 
 48 
 1 
 7/16 
 11 
 5/8 
 16 
 3864 
 Flat mast groove** 
 7/8 
 22 
 0.48 
 14 
 19 
 3 
 76 
 1.29 
 37 
 1 
 3/8 
 9.5 
 7/16 
 11 
Part
No.
Description
Track end length
Weight
Mounting slugs/kit
in
mm
oz
g
 3847 
 Round mast groove/pinstop 
 9 1/2 
 241 
 8.3 
 234 
 3 
 3848 
 Flat mast groove/pinstop 
 9 1/2 
 241 
 11.3 
 322 
 3 
 3850 
 Round mast groove/fixed (pair) 
 
 
 3.3 
 94 
 2 
 3851 
 Flat mast groove/fixed (pair) 
 
 
 3.7 
 105 
 2 
 3865 
 Flat mast groove/fixed** 
 
 
 3.5 
 100 
 2 
 3866 
 Flat mast groove/pinstop** 
 9 1/2 
 241 
 11.1 
 316 
 3 
Part
No.
Description
Length
Weight
Fastener
spacing
Fastening 
method
in
m
oz/ft
g/m
in
mm
 3844 
 Slug-mount track 
 81 1/8 
 2.06 
 5.66 
 527  3 15/16  100 
 Mounting slugs 
 3849.2M  Flanged track 
 78 3/4 
 2 
 12 
 1119 
 
 
 Adhesive 
 3849.6M  Flanged track 
 236 1/4 
 6 
 12 
 1119 
 
 
 Adhesive 
 C10879  Endstop/feeder kit* 
 15 3/4 
 0.4 
 22.4 
 636  2 15/16 
 75 
 Fasteners/adhesive 
Track Gates
Length
Weight
Part No. Description
in
mm
oz
g
 Track Gate Sys B for R27 and 3844 Track
 236 1/4 
 6 
 6.7 
 626 
TRACK GATES
NEW

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