quote:
Originally posted by mathew
The purpose of weight jackets is exactly what Kato said, otherwise there is no point to wearing them. In any case, the ruling is meant to apply so that any extra weight, has neutral buoyancy.
Water-based jackets are easy to make neutral (excluding the fact that the fresh-water used in the jackets, is more dense than sea water), you just need extra flotation to offset the lead.
Here is the ISA rules for 2007: www.speedsurfing.org/index.php?option=com_content&task=view&id=45&Itemid=66
They specifically state that any weight vest must be neutral - it says nothing of using lead (ie: you could use depleted uranium for the extra density vs smaller size), just that the specific density of the vest must be less than the sea-water.
As to the ISAF ruling, Alison Shreeve mentions them in the context of ISAF (www.aus911.com/index.php?id=11), so it appears to be unclear. Further reading indicates that total mass above the knee must be less than 9kg - which would include your wet wet-suite, etc.
JayBee, do you have a reference to the section 43.1?
quote:
Originally posted by frant
OR VICE VERSA..
quote:
Originally posted by kato
Hey decrepit,You start with just a few kgs and as the weight is at your shoulder height no danger to your neck -----
quote:
But if you hit head first, it's your neck that absorbs the kinetic energy of the lead!!!!
quote:
Originally posted by sailquik
Hey decrepit,You start with just a few kgs and as the weight is at your shoulder height no danger to your neck -----
But if you hit head first, it's your neck that absorbs the kinetic energy of the lead!!!!
The only thing that can be a worry is hitting your sail head first. If you hit the water it is not usually an issue. My neoprene vest has quite a lot of padding and it also is quite elastic for shock loads so it give a bit on impact.
Kato offers good advice though. If you want to try a weight vest, start with just a kilo or two and get your body and balance used to it. When you feel comfortable and fit, add a bit more weight. I am reluctant to use any weight early in the speed season until I have built up a bit of core fitness. As Kato says, it can be hard on the arms and grip, and the higher mass can put a bit more strain on an iffy back. Build up slowly!
By the way. I like lead better than water. It is much less bulky and a can be moulded to the body a bit better
quote:
Originally posted by yoyo
".....My limiting factor at the moment is inexperience"
????????????????????????????????????????????????????????????
