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Schaefer Twin-Sheet Lead Blocks on T-Track Cars

Schaefer Twin-Sheet Lead Blocks on T-Track Cars

Schaefer Twin Sheet Lead Blocks feature a side-to-side pivoting extra wide sheave and cage design that allows for the passage of two jib sheets simultaneously. These blocks are ideal on racing boats to allow for quick sail changes. Their low profile design keeps sheets close to the deck for proper lead to deck mounted winches. Constructed of heavy-duty, black anodized aluminum with sheaves that feature NTE Nomex/Teflon bearings. Spring pin stops allow quick adjustment for changing wind conditions.

Important: The crossmember of the "T" on 1 1/4" T-Track (aka Imperial or English) is 3/16" (~4.75mm) thick. The crossmember of the "T" on 32mm T-Track (aka Metric) is 6mm (~1/4") thick. The crossmember on 1" T-Track is 1/8" (~3mm) thick. When buying cars for existing track, make sure to match the car with your track.

Part # Suits Track Max Boat LOA Max Sail Area Sheave Diameter Max Line Diameter Length Width Height Bearing Height Safe Working Load Weight
ft m sq ft sq m in mm in mm in mm in mm in mm in mm lb kg oz g
SC3277 1" T-Track 27 8 315 29 1 1/2 38 2 x 1/2 2 x 13mm 3 1/2 89 1 11/32 34 3 9/32 83 1 29/32 49 2500 1135 10 284
SC3297 1 1/4" T-Track 38 11.5 715 66 2 51 2 x 5/8 2 x 16mm 4 1/2 114 1 3/4 44 4 1/2 114 2 3/4 70 3501 1590 23 652
SC3258 1 1/4" T-Track 44 13.4 875 81.3 2 11/16 68 2 x 3/4 2 x 19mm 5 7/8 149 1 3/4 44 5 1/8 130 3 76 4400 2000 34 1000
SC3289 1 1/2" T-Track 45 13.6 900 83.6 3 1/2 89 2 x 7/8 2 x 22mm 6 3/4 171 1 15/16 49 6 7/32 166 3 13/32 87 10000 4545 84 2830


SC3258 Mid-Range Twin Sheet Lead Block Price: $419.84 SC3277 Twin Sheet Lead, 1 x 1/8 Black Price: $198.36
SC3289 Twin Sheet Lead, 1 1/2" x 1/4", Stainless Price: $952.00 SC3297 Twin Sheet Lead 1-1/4 x 3/16 - Black Price: $238.40


Schaefer Aluminum T-Track

Schaefer Aluminum T-Track

Schaefer's 6061-T6 Aluminum T-Track incorporates a concave shaped riser that allows it to remain steady for spar mounting, or easily accept sealant for mounting to decks. Available in durable, black hardcote anodized, or silver (clear) anodized.

The Race Track features more closely spaced holes to allow racers to fine-tune sails with three times the granularity of normal T-Track. Also works well with reefing blocks and spinnaker mast eyes. Available in black anodized only.

Track Width Height Base Width Crossmember of "T" Height Fasteners Fastener Spacing Pinstop Hole Diameter Weight/Ft Endstops
in mm in mm in mm in mm in mm in mm in mm oz g
3/4" 19 5/16" 8 7/16" 11 1/8" 3 #10 FH 5 3" 76 3/16" 5 2.9 82 SC7434
1" 25 3/8" 9 1/2" 13 1/8" 3 1/4" FH 6 4" 101 1/4" 6 4.3 122 SC7435 & 35G
1 1/4" 32 7/16" 11 11/16" 18 3/16" 5 5/16" FH 8 4" 101 3/8" 8 6.8 193 SC7436 & 36G
1 1/2" 38 1/2" 13 7/8" 22 1/4" 6 3/8" FH 10 4" 101 7/16" 11 10.4 295 SC7439


SC4062 1 Race T-Track 2' Black Price: $39.16 SC4064 1 Race T-Track 4' Black Price: $70.16
SC4066 1 Race T-Track 6' Black Price: $105.60 SC4068 1 Race T-Track 8' Black Price: $140.96
SC4074 1-1/4 Race T-track 4' Black Price: $84.32 SC4076 1-1/4 Race T-Track 6' Black Price: $127.76
SC4078 1-1/4 Race T-Track 8' Black Price: $168.32 SC4112 1-1/2 Race T-Track 12' Black Price: $364.56
SC7434 3/4 Track End Stop - Black Price: $4.84 SC7434G 3/4 Track End Stop - Silver Price: $4.84
SC7435 1 Track End Stop - Black Price: $4.84 SC7435G 1 Track End Stop - Silver Price: $4.84
SC7436 1-1/4 Track End Stop - Black Price: $4.84 SC7436G 1-1/4 Track End Stop - Silver Price: $4.84
SC7439 1-1/2 Track End Stop - Black Price: $48.32

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