Masts

One of the most important choices you make when rigging a sail is which mast you put in the mast sleeve. Or, more specifically the length, curve and stiffness of the mast, and how closely these parameters match the sail. The mast is quite literally the backbone of the rig and it governs the sail's performance.

MCS curve and stiffness data for the Sailworks mast range is available here (PDF file, 12Kb).

An explanation of the MCS bend test and the calculation of the IMCS stiffness coefficient is explained here (PDF file, 29Kb).

model	length cm	carbon content	weight kg	MCS stiffness	IMCS stiffness	use
	460	100%	1.6	25.4	25.9	SDM Racing
	490	100%	1.9	26.1	30.2
	520	100%	2.2	26.4	34.4
	430	75%	1.7	23.9	21.3	SDM Freeride
	460	75%	1.9	25.6	26.1
	490	75%	2.2	25.8	29.9
	400	95%	1.6	25.4	19.7	RDM Racing & Performance Freeride
	430	95%	1.8	26.2	23.4
	460	95%	2.0	27.0	27.0
	370	91%	1.5	24.0	16.0	RDM Hardcore Wave (stiffer)
	400	91%	1.7	25.0	19.4
	430	91%	1.9	25.8	23.1
	460	91%	2.1	26.0	26.6
	340	90%	1.4	22.0	11.0	RDM Hardcore Wave (softer)
	370	90%	1.5	23.0	14.0
	400	90%	1.6	24.0	18.0
	430	90%	1.9	25.0	22.0
	270	0%	1.2	23.4	8.4	RDM Kids & Schools
	315	0%	1.4	22.6	10.9
	370	0%	1.8	24.8	16.5