https://video.search.yahoo.com/yhs/sear ... ction=viewPeter_Frank wrote: ↑Sat Dec 02, 2017 6:59 pmeven draggy low performing kites can go unlimited fast, when it blows sufficiently and you ride on a downwind course.
We have actually seen this quite often when talking speed records - crazy high winds and a normal low aspect kite, has been used for many of these - riding a deep downwind course.
Totally agree. The the amount of power needed to overcome a draggy large foil becomes impractical. On the water you just can't go faster and you can feel the drag in the foil slowing you down.revhed wrote: ↑Sat Dec 02, 2017 8:53 pmPeter_Frank wrote: ↑Sat Dec 02, 2017 6:59 pm
But no, there is no speed limit for a given foil
It is not drag that is the limiting factor for speed, nor the kites max speed (such a thing does not exist either, just as a hydrofoil can not have a max speed)
But it is not so, there is no max speed...
So simply NOT true, EVERYTHING has a max speed limit, as far as we know now most mass is a little under light speed!
Therefore read literally as posted in 3 (three) different sentences above are FALSE!
And back to reality,
By using more and more power to get a draggy, any, foil to go faster you WILL reach its max speed limit when it breaks, YES, due to drag!
So in the real world one CAN say a given KBHF set up DOES have a general max speed based on wind strength, kite size, rider skill, its build strength, which if we really wanted could be determined.
BTW, the same logic may be applied to kites which also have a real world max speed due to drag and breakage!
I think Peter is missing the point of the question.
Correct!Peter_Frank wrote: ↑Sun Dec 03, 2017 11:33 am
Am I missing the question here ? Maybe, but the full quite interesting question was:
And to his question some of the answers are IMO
1. A given foil does not have a maximum speed, it only has a typical practical max speed that only the good riders get past.
2. It will not break nor cavitate, at the speeds we are talking about here.
3. It is a lot more difficult to ride at high speeds, a lot more kitepower and stabilizer needed, and you wont get to the same speeds as smaller and more flat wings.
To slowboat: No risk or anything drastic will happen when you push a well trimmed foil beyond a by some labelled "maximum speed" (as no such thing exist...) at the real world speeds we are talking about here.
Maybe I missed it, but I found the question quite obvious - as so many seem to have labelled a "max speed" for a given foil, that now many actually think there is a definite max speed you should not exceed, and curious to what happens if you go even faster ?
It should be called typical max speed nowadays, then it all makes sense
I am not talking about theoretical physics here, but real life physics
And after reading your post about a foil that "dives" when you go faster - your question might origin from that slowboat ?
Just a thought
Users browsing this forum: Wazza Foil and 7 guests