Ultrasonic 2012 - Page 2

richardtimmers · 29th January 2012, 08:44 AM

Is it sensible, to have an Futura 141-2010 and a ultrasonic 147 to each other? The difference is only 6 liters, however the chance that you will plane ealier isn't familiar with me. Can somebody say more about that? My sails are an North Warp. 11.0m2, NP-H2 9.2-7.7-6.7 and I also have an 122 Futura 2010.

Thanks for helping?

regards, Richard

BelSkorpio · 29th January 2012, 06:20 PM

When you have volume enough, it's the width that counts for early planing.
US147 <-> FU141:
93 <-> 80 or 65 <-> 50 at the tail.
The length of th FU141 is 246 compared to 240 of the US147 which facilitates a more passive way of getting on the plane, but I think the US will definitely plane earlier, go better through lulls and point better.

Jean-Marc · 30th January 2012, 08:54 PM

Richard,

Tail width at one foot off (OFO) is the keyword here. With an 11.0 m2 sail, forget the Futura 141. The UltraSonic is a perfect match with such a large sail.

Conversely, the Futura 122 is spot on with your smaller 6.7-9.2 m2 sails.

Cheers !

JM

29th January 2012, 06:20 PM	#12
BelSkorpio Member Join Date: Jan 2009 Location: Belgium Posts: 429	When you have volume enough, it's the width that counts for early planing. US147 <-> FU141: 93 <-> 80 or 65 <-> 50 at the tail. The length of th FU141 is 246 compared to 240 of the US147 which facilitates a more passive way of getting on the plane, but I think the US will definitely plane earlier, go better through lulls and point better. __________________ IS87 / IS101 / IS122 / US147

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29th January 2012, 08:44 AM	#11
richardtimmers New Member Join Date: Jan 2012 Posts: 1	Is it sensible, to have an Futura 141-2010 and a ultrasonic 147 to each other? The difference is only 6 liters, however the chance that you will plane ealier isn't familiar with me. Can somebody say more about that? My sails are an North Warp. 11.0m2, NP-H2 9.2-7.7-6.7 and I also have an 122 Futura 2010. Thanks for helping? regards, Richard

30th January 2012, 08:54 PM	#13
Jean-Marc TEAM Join Date: Aug 2006 Posts: 1,241	Richard, Tail width at one foot off (OFO) is the keyword here. With an 11.0 m2 sail, forget the Futura 141. The UltraSonic is a perfect match with such a large sail. Conversely, the Futura 122 is spot on with your smaller 6.7-9.2 m2 sails. Cheers ! JM