Hello, read here somewhere that foils can either be built for speed, glide or manoeuvrability. Paraphrasing here.
And that you can't have all three and need to trade off with one to enhance the other.
If you have a big slow foil will it have manoeuvrability and just go really slow? And if it goes really slow does that mean it's really hard to link up bumps if your downwind foiling?
I have no idea what I'm talking about here. Would love an explanation if possible about the benefits of each strength in design and where it works? Thanks.
Select to expand quotesupguythesecond said..
Hello, read here somewhere that foils can either be built for speed, glide or manoeuvrability. Paraphrasing here.
And that you can't have all three and need to trade off with one to enhance the other.
If you have a big slow foil will it have manoeuvrability and just go really slow? And if it goes really slow does that mean it's really hard to link up bumps if your downwind foiling?
I have no idea what I'm talking about here. Would love an explanation if possible about the benefits of each strength in design and where it works? Thanks.
LOL, this is a giant can of worms as there is no formula or correct answer here.
A foil has soo many variables, and then variables within those variables.
But in very general terms, you can not have it all! Same reason a fighter jet looks different to a passenger airliner.
Things that affect design are;
- the amount of power/thrust that will be readily available to apply.
- the load that is required to be lifted.
- the need for maneuverability.
- stability in forms of pitch, roll and yaw control.
- stability needed in the form of a rear wing/stab.
- required speed range needed.
- lift to drag
- durability and stiffness
- cost to manufacture or materials needed to achieve many of the above and below
Things that can influence the above are;
- Wingspan
- Aspect Ratio
- Chord
- outline
- chamber
- leading edge rake
- trailing edge rake
- anhedral
- dihedral
- wash out
- flex
- section
- profile
- thickness
And often like with board shapes etc. it is a combination of many of them all together to achieve a certain desired performance target. But, you will find many of these are like a slider, and moving more in one direction to achieve something will inevitably reduce performance in another area in some way. It is all about weighing up which is more important for the goal.
Some foils are amazing once up but impossible to get up. others get up super easy but at the detriment of limited glide and carry. Some foils can handle enormous amounts of power and speed/velocity while others max out easy and become uncontrollable.
What I have found over my 7-8 years of foiling is that people often explain what they think they want based on trends or one performance aspect as opposed to actually understanding what they want their foil to do for them, then finding a foil to match criteria. It is not easy, I've found many people actually don't know what they primarily want their foils to do. A lot of crew riding high aspect foils with no intention of ever DW'ing or riding without a powersource, and hence missing out on tons of awesome maneuverability by getting all that glide that is no necessary.
The trends at the moment are away from lower aspect foils, but there are soo much fun when used right. As HA foils are in their intended use.
Not really an answer to your Q, but some insight. Always happy to help guide you to a foil choice to suit within the Naish line 
regards,
JB
Select to expand quoteWindgenuity said..supguythesecond said..
Hello, read here somewhere that foils can either be built for speed, glide or manoeuvrability. Paraphrasing here.
And that you can't have all three and need to trade off with one to enhance the other.
If you have a big slow foil will it have manoeuvrability and just go really slow? And if it goes really slow does that mean it's really hard to link up bumps if your downwind foiling?
I have no idea what I'm talking about here. Would love an explanation if possible about the benefits of each strength in design and where it works? Thanks.
LOL, this is a giant can of worms as there is no formula or correct answer here.
A foil has soo many variables, and then variables within those variables.
But in very general terms, you can not have it all! Same reason a fighter jet looks different to a passenger airliner.
Things that affect design are;
- the amount of power/thrust that will be readily available to apply.
- the load that is required to be lifted.
- the need for maneuverability.
- stability in forms of pitch, roll and yaw control.
- stability needed in the form of a rear wing/stab.
- required speed range needed.
- lift to drag
- durability and stiffness
- cost to manufacture or materials needed to achieve many of the above and below
Things that can influence the above are;
- Wingspan
- Aspect Ratio
- Chord
- outline
- chamber
- leading edge rake
- trailing edge rake
- anhedral
- dihedral
- wash out
- flex
- section
- profile
- thickness
And often like with board shapes etc. it is a combination of many of them all together to achieve a certain desired performance target. But, you will find many of these are like a slider, and moving more in one direction to achieve something will inevitably reduce performance in another area in some way. It is all about weighing up which is more important for the goal.
Some foils are amazing once up but impossible to get up. others get up super easy but at the detriment of limited glide and carry. Some foils can handle enormous amounts of power and speed/velocity while others max out easy and become uncontrollable.
What I have found over my 7-8 years of foiling is that people often explain what they think they want based on trends or one performance aspect as opposed to actually understanding what they want their foil to do for them, then finding a foil to match criteria. It is not easy, I've found many people actually don't know what they primarily want their foils to do. A lot of crew riding high aspect foils with no intention of ever DW'ing or riding without a powersource, and hence missing out on tons of awesome maneuverability by getting all that glide that is no necessary.
The trends at the moment are away from lower aspect foils, but there are soo much fun when used right. As HA foils are in their intended use.
Not really an answer to your Q, but some insight. Always happy to help guide you to a foil choice to suit within the Naish line
regards,
JB
What's a board with a really wide wing going to be good for?
also, if I'm looking for a board that goes slow what am I looking for and does a slow board turn well also?
Select to expand quotesupguythesecond said..Windgenuity said..supguythesecond said..
Hello, read here somewhere that foils can either be built for speed, glide or manoeuvrability. Paraphrasing here.
And that you can't have all three and need to trade off with one to enhance the other.
If you have a big slow foil will it have manoeuvrability and just go really slow? And if it goes really slow does that mean it's really hard to link up bumps if your downwind foiling?
I have no idea what I'm talking about here. Would love an explanation if possible about the benefits of each strength in design and where it works? Thanks.
LOL, this is a giant can of worms as there is no formula or correct answer here.
A foil has soo many variables, and then variables within those variables.
But in very general terms, you can not have it all! Same reason a fighter jet looks different to a passenger airliner.
Things that affect design are;
- the amount of power/thrust that will be readily available to apply.
- the load that is required to be lifted.
- the need for maneuverability.
- stability in forms of pitch, roll and yaw control.
- stability needed in the form of a rear wing/stab.
- required speed range needed.
- lift to drag
- durability and stiffness
- cost to manufacture or materials needed to achieve many of the above and below
Things that can influence the above are;
- Wingspan
- Aspect Ratio
- Chord
- outline
- chamber
- leading edge rake
- trailing edge rake
- anhedral
- dihedral
- wash out
- flex
- section
- profile
- thickness
And often like with board shapes etc. it is a combination of many of them all together to achieve a certain desired performance target. But, you will find many of these are like a slider, and moving more in one direction to achieve something will inevitably reduce performance in another area in some way. It is all about weighing up which is more important for the goal.
Some foils are amazing once up but impossible to get up. others get up super easy but at the detriment of limited glide and carry. Some foils can handle enormous amounts of power and speed/velocity while others max out easy and become uncontrollable.
What I have found over my 7-8 years of foiling is that people often explain what they think they want based on trends or one performance aspect as opposed to actually understanding what they want their foil to do for them, then finding a foil to match criteria. It is not easy, I've found many people actually don't know what they primarily want their foils to do. A lot of crew riding high aspect foils with no intention of ever DW'ing or riding without a powersource, and hence missing out on tons of awesome maneuverability by getting all that glide that is no necessary.
The trends at the moment are away from lower aspect foils, but there are soo much fun when used right. As HA foils are in their intended use.
Not really an answer to your Q, but some insight. Always happy to help guide you to a foil choice to suit within the Naish line
regards,
JB
What's a board with a really wide wing going to be good for?
also, if I'm looking for a board that goes slow what am I looking for and does a slow board turn well also?
This is not really a direct question. Probably easier put, what type of riding are you trying to achieve? How heavy are you? what skill level would you honestly say you are at? What conditions are likely to be what you wish to ride in? Are you the type of rider who pushes to get the last 1% of performance out of your gear or someone who enjoys ease and efficiency.
When you say a board that goes slow, this is possibly confused with the fact that your board will very unlikly go faster than you want as you will end up on foil.
