Reply To: Mast stiffness sideways
I think sideways numbers are less looked at than f/a and are far more important for your weight. The sideways is what gives you power and lets you de-power as well. It is really important to get a mast you can handle in all conditions.
To give you a bit of an idea of what others are using here are some sideways numbers.
I am around 85-87kg and mine are
40 57 49 224
Thomas HM is 90 odd kg on a good day
41 61 53 216
Really stiff is Bo Teglars again around 90kg
35 53 44 195
Personally I think this is too stiff but he likes it in the light and moderate.
This is not the stiffest sideways as Mark Perrow had one at 185. Alistair Deaves said he almost saw it bending in about 25knts with the 115kg Perrow hiking.
Jorgen Svendsen was around 85kg at the worlds and his mast was
41 61 52 221
What you can see is that the bottom number is around 40 in all these masts. This means the mast is stiff out of the deck. As the masts are very small in the top they work hard and fast with the high mod carbon. If you think that 10mm at the tip sideways does not make such a difference just imagine how much more carbon it takes to hold the mast straighter with 10kg on the tip over a length of 6m.
This means that if you have a tip deflection of 250 the mast is realistically a lot softer sideways than one with around 225. If you are 100kg then you should really have a mast with a sideways bend of around
38 54 45 210.
Hope this helps