What is the Difference Between Low, Medium and High Aspect Foils?

Matt Nuzzo and James Jenkins break down the simple differences between low, mid, and high aspect foils.
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[@upside721]

Thanks. You guys did a decent job at explaining a potentially confusing subject. The word "stable" is confusing unless you also state which axis. Pitch, roll or yaw. Why not just say "roll stability" if that's what you are thinking? Typically HA foils are roll stable (difficult) and LA foils are roll unstable (looser side to side thus easier for most people) but of course roll stability depends greatly on the foil size and other design choices.

[@user-es8qx5uj2h]

Really love these vids

[@REALWatersports]

Thank you!

[@uride290]

Nice reviews on the Armstrong videos! Where is this review done, 2:22, oh my looks fantastic.

[@BatuhanYumrukaya]

How about Mast sizes ?

[@rnelias]

Are these wings the same thickness? I mean... so many parameters when choosing wings and is usually easier to compare when me keep some of them fixed. From what I understand, low-end (and stall speed) is usually related to wing thickness. Thicker wings will usually have better low-end but, due to increased drag, it will interfere in the high-end too, but the info about higher AR having better glide and pump hability with the cost of worse carving feature is accurate 👍🏼

[@REALmattnuzzo]

Armstrong designs a specific foil section per each foil so each of these have a different foil section and thickness. Many other designers will use the same foil section across all foils which is easier to design but lends to all of the foils feeling generally the same. As Armstrong describes it, there is a "bit of a dark art" in designing foil sections for the desired perimeters they are looking for. You are correct that in general the thicker the wing the slower it is and the lower the stall speed and vice versa. In the foils shown in this video, the Low Aspect CFv2 has a much thinner foil section than most other low aspect foils on the market and the HA has a slightly thicker foil section than the previous version HA from Armstrong. Unless you are a foil designer and understand the relationship of all these parameters, it is important to not get too fixated on the specs. Comparing the specs of a similar class of foils from two different brands won't really tell you too much of how they ride.

[@krispewkrem3]

Great explanation! But who is connecting waves on the MA wings? I’ve tried my absolute hardest and I can connect a few but the stall speed is awful on my MA1000. An HA680 pumps better which seems mind blowing. I’m loving this new trend of high camber and high aspect foils.

[@REALWatersports]

James does a ton, he loves his MA625 and MA800 for surf foiling. But on this trip he also was delving more into the HA680 and HA880. If you have instagram go ahead and give him a follow, he usually will list all the foil gear he was on for a post and then the comments become a place for foil discussion: jamesjenkins_

[@Bido11561]

If I’m riding a 900 mid aspect, should I go with a 840 or 1040 high aspect?

[@royfigueroa9210]

where is Jenkins located?

[@REALmattnuzzo]

James is from the Outer Banks of North Carolina but he is traveling all over the world to foil and surf.

[@Kleeblatt2304]

The answer to this question is easy. The difference is in the "Aspect".