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Spars, Rigging, and Hardware for SailboatsRig-Rite, Inc. |
Isomat Exit Blocks |
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Spars, Rigging, and Hardware for SailboatsRig-Rite, Inc. |
Isomat Exit Blocks |
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| Exit Blocks incorporate a
sheave, and are used to exit any internal control line (halyards, pole lifts,
etc.) from a spar where a directional change of 90 to 180 degrees is required. Isomat
generally uses 3 different sizes of Exit Blocks on their Mast Sections, all three attach
to the mast with two (2) fasteners. Some Isomat Masts have integral Welded Exit Boxes
at the base of the mast for leading internal halyards out of the Mast at Deck level. For
Parts for them, See Welded Mast Base Exit
Boxes. |
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| Exit Block: NGA-25: Internal Exit Block is used for halyards, spinnaker pole lifts and other control lines. Black Plastic block assembly has removable 8mm (5/16") SS Sheave Axle. Plastic sheave is 38mm (1 1/2") diameter x 31/64" wide for rope up to 3/8" diameter. Block measures 4 1/8" long x (maximum) 1 1/16" wide and projects 1" inside of mast. Assembly fits in mast cutout 2 3/4" high x 15/16" wide, and is mounted with (2) #10 (3/16") FH fasteners on 3 3/16" (81mm) hole centers. HA8m |
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| Exit Block w/ Aluminum Sheave: NGA-25A: Internal Exit Block with Aluminum Sheave is used for halyards, spinnaker pole lifts and other control lines. Black Plastic block assembly has removable 8mm (5/16") SS Sheave Axle. Aluminum sheave is 38mm (1 1/2") diameter x 31/64" wide and will handle 3/16" wire, or rope up to 3/8" diameter. Block measures 4 1/8" long x (maximum) 1 1/16" wide and projects 1" inside of mast. Assembly fits in mast cutout 2 3/4" high x 15/16" wide, and is mounted with (2) #10 (3/16") FH fasteners on 3 3/16" (81mm) hole centers. As NGA-25, above, but with Aluminum Sheave.
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| Aluminum Exit Block: NGA-26: Internal Exit Block is used for halyards, spinnaker pole lifts and other control lines. Cast Aluminum block assembly has removable 10mm (3/8") SS Sheave Axle. Acetyl Sheave (NG1-3) is 50mm (2") OD x 14.5mm (9/16") wide for rope up to 1/2" diameter. Block measures 4 1/2" (115mm) long x 1 3/8" (35mm) wide and projects 1 7/16" (36mm) inside of mast. Assembly fits in mast cutout 2 13/16" (72mm) high x 15/16" (24mm) wide, and is mounted with (2) 1/4" (6mm) fasteners on 3 5/8" (92mm) hole centers. |
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| Aluminum Exit Block w/ Aluminum Sheave: NGA-26A: Internal Exit Block with Aluminum Sheave is used for halyards, spinnaker pole lifts and other control lines. Cast Aluminum block assembly has removable 10mm (3/8") SS Sheave Axle. Aluminum sheave (NG1-3A) is 50mm (2") diameter x 31/64" wide for rope up to 1/2" diameter. Block measures 4 1/2" (115mm) long x 1 3/8" (35mm) wide and projects 1 7/16" (36mm) inside of mast. Assembly fits in mast cutout 2 13/16" (72mm) high x 15/16" (24mm) wide, and is mounted with (2) 1/4" (6mm) fasteners on 3 5/8" (92mm) hole centers. As NGA-26, above, but with Aluminum Sheave.
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| Large Aluminum Exit Block: NGA-27: Internal Exit Block is used for halyards, spinnaker pole lifts and other control lines. Cast Aluminum block assembly has lightweight tubular 22mm (7/8") SS Sheave Axle. Acetyl Sheave (NG2-3W) is 85mm (3 3/8") OD x 20mm (3/4") wide for rope up to 5/8" diameter. Block measures 6 1/4" (160mm) long x 1 5/8" (41mm) wide and projects 2 7/8" (72mm) inside of mast. Assembly fits in mast cutout 4 1/2" (115mm) high x 1 1/4" (32mm) wide, and is mounted with (2) 1/4" (6mm) fasteners on 5 3/8" (136mm) hole centers. 503 |
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