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Big Boat blocks > Footblocks

Black Magic footblocks carry some of the highest loads imposed by running rigging. The Torlon rollers on these lightweight, free running blocks are housed in a center cage, with no contact between bearings. UV resistant carbon black Delrin balls handle side loads.

Either metric or imperial flathead fasteners may be used for mounting and are not exposed.

Use for:

Spinnakers

1967 3005

Lockoff to temporarily secure sheets Clean, sculptured shape No stainless-to-aluminum contact Full saturation Hardkote anodizing Single/double sheave models UV-protected, caged Torlon rollers

1963 1972 3010 3017 3023

1964 1973 3011 3033

1968 3006

Part No.	Description	Sheave		Length		Height		Weight		Max Line		Safe working load		Breaking strength		Fasteners (FH)
		in	mm	in	mm	in	mm	oz	g	in	mm	Ib	kg	Ib	kg	in	mm
1963	Single/high-load	21/4	57	35/16	84	1	25	4.2	119	7/16	12	2500	1134	5000	2268	4 - 1/4	6
1964	Double/high-load	21/4	57	35/16	84	113/16	46	6.9	195	7/16	12	1650	750	3300	1500	4 - 1/4	6
1967	Single/high-load/lockoff*	21/4	57	35/16	84	1	25	5.3	150	7/16	12	2500	1134	5000	2268	4 - 1/4	6
1968	Double/high-load/lockoff*	21/4	57	35/16	84	113/16	46	9.6	272	7/16	12	1650	750	3300	1500	4 - 1/4	6
1972	Single	3	75	43/8	111	11/4	32	10.2	288	9/16	14	5250	2380	10500	4762	4 - 5/16	8
1973	Double	3	75	43/8	111	21/4	57	18	508	9/16	14	3465	1572	6930	3143	4 - 5/16	8
3005	Single/lockoff*	3	75	43/8	111	11/4	32	11.7	333	9/16	14	5250	2380	10500	4762	4 - 5/16	8
3006	Double/lockoff*	3	75	43/8	111	21/4	57	20.7	586	9/16	14	3465	1572	6930	3143	4 - 5/16	8
3010	Single	4	100	55/8	143	15/16	33	20.6	584	5/8	16	7500	3402	15000	6803	4 - 3/8	10
3011	Double	4	100	55/8	143	27/16	62	36.2	1025	5/8	16	4950	2250	9900	4500	4 - 3/8	10
3017	Single	5	125	615/16	176	111/16	43	35.7	1012	3/4	19	11000	4990	22000	9977	4 - 1/2	12
3023	Single	6	150	81/16	205	17/8	48	60.6	1719	1	25	15000	6818	30000	13636	4 - 5/8	16
3033	Double	5	125	615/16	176	213/16	71.5	62.2	1762	3/4	19	7370	3350	14740	6700	4 - 1/2	12

* - Lockoffs are intended to hold lines temporarily and should not be used in place of line stoppers or clutches

Index | Use chart | 57 mm | 75 mm | 100 mm | 125 mm & 150 mm | Teardrop | Crossover | Mastbase Halyard Lead & Flip-Flop | Footblocks | AirRunners | Stainless Steel Runners | Opening Foot Blocks | Snatch | ESP Blocks | Stainless Steel ESP | Stainless Steel Blocks | Specifications