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J105 mast step position


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Hello!

we have done the copa del rey this summer wich every race is W /L.

our boat had problems in upwind, we couldnt go the same angle than our different competitors.

we have now checkes the mast step and we have one point in front than the tunning guides. 
 

if we change it and get one point back just to the tunning guides says do you think the boat will improve?

we have problems in light winds…

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18 hours ago, WANDERLUST said:

Hello!

we have done the copa del rey this summer wich every race is W /L.

our boat had problems in upwind, we couldnt go the same angle than our different competitors.

we have now checkes the mast step and we have one point in front than the tunning guides. 
 

if we change it and get one point back just to the tunning guides says do you think the boat will improve?

we have problems in light winds…

Generally speaking, moving the mast aft (closer to the keel), powers up the boat. So should help with lighter winds. 

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There's a pretty complex relationship between mast butt position, rake, forestay length, jib cut, jib car position and how you drive the boat. I'm unconvinced that the boat is sensitive to mast butt position.

When you say that you can't point, is your metric for "not pointing" the jib telltales, or boat speed or VMG vs polars or something else? Is your concern the "off the line" pinching-fest to the first tack, or just general upwind performance in a clear lane? Is the boat powered up (>11kts breeze) or are you in light air and looking for power?

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  • 2 weeks later...

We were allways fast and thought could point better, so after checking the tunning guides seen we were one point in front off the north sails guide.

We were fast specially in strong winds.

with the new mast setup we were able to point really better and keep speed.

we are sailing in practically real time against a sf3200 r2 with really good sailors.

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  • 4 weeks later...

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