Unifiber HD SDM 75% Constant Curve mast

Unifiber HD SDM 75% Constant Curve mast

The Unifiber HD SDM 75% Constant Curve mast is a constant curve mast that is 2-piece and works perfectly on various surf sail brands including;

-Neilpryde
- Aerotech
- Avanti
- Bull Sails
- Point 7
-Gun Sails
- KA Sail
- Loftsails
-S2 Maui
-Severne
- Naish

If you have any questions about the right choice of your mast, please call us 073-5212787

	Constant Curve	Carbon Fiber	Finishing	Base%	Top %	Stiffness IMCS	Weight +/- 6%
	HD SDM C75 Constant Curve 400	T700	Matte Black Spiral Taped	62.5 %	76 %	19	1.65 kg
	HD SDM C75 Constant Curve 430	T700	Matte Black Spiral Taped	62.5 %	76 %	21	1.84 kg
	HD SDM C75 Constant Curve 460	T700	Matte Black Spiral Taped	62.5 %	76 %	25	2.14 kg
	HD SDM C75 Constant Curve 490	T700	Matte Black Spiral Taped	62.5 %	76 %	29	2.43 kg
	HD SDM C75 Constant Curve 520	T700	Matte Black Spiral Taped	62.5 %	76 %	30	2.72 kg

The bend characteristics of a mast is defined by four variables:

• IMCS: this represents the average stiffness of the mast


• Base%: this defines the deflection at the base (relative to the midpoint)


• Top%: this defines the deflection at the top (relative to the midpoint)


• Bend Curve Number: this number - in an approximate way - describes the mast curve. It is calculated by subtracting the Base% from Top%.

 

• Constant Curve- This is the most commonly used curve profile
  
  
  
  • Base%: 62.5%
  
  
  • Top%: 76%
  
  
  • BC number: 13.5
  
  
  
  


• Constant FL Curve- This is similar to the old "flex top" mast, but with more flex low down (around the center) of the mast. FL = Flex Low.
  
  
  
  • Base%: 62%
  
  
  • Top%: 77%
  
  
  • BC number: 15
  
  
  
  


• Constant FH Curve- This is also similar to the old "flex top" mast, but there is more flex high up. The center section is relatively stiff. FH = Flex High.
  
  
  
  • Base%: 64% for RDM, 63% for SDM
  
  
  • Top%: 79% for RDM, 78% for SDM
  
  
  • BC number: 15