Mast Band with Flange - 12 mm

Your Price: $1.70

Part Number: 056-012

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Mast band with flange, glass filled plastic for 12 mm diameter mast
The hole is drilled to 2.3 mm to accept a shackle
It is intended to spread the forestay attachment point away from the mast a little when used with a pocket luff mainsail to stop the forestay and topping lift from fouling on the pocket luff.
The hole is spaced away from the mast so the band should be placed about 25 mm lower than them measured height of the forestay limit mark.

Why not drill a hole in the mast for the forestay attachment?

A hole is the simple alternative to using this mastband but there are some distinct problems with that: the mast is weakened at a point where there is a peak bending moment - the load of the forestay applied to un-reinforced carbon tube may be enough to pull down the fibres of the tube or even split it - reinforce the tube against splitting if you do this - the forestay is not held clear of the mast so that a pocket luff of a mainsail can rotate freely around the mast.

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