I tend to leave my mast in the same position ,middle of the track,it works well.

just wondering if moving the mast makes the foil(board) faster or is mast position about more or less lift.

Im riding a Naish 2140,while I love it,easy lift ,cruzy pumps and glides well,I'm getting lazy.

So,I'm thinking either move the mast or buy a smaller eg 1800ha or should I go smaller???

Thx for any advice.

I have been trying to position mast so I am standing in same position on the board on or off foil.

I would guess shimming the rear wing is likely to affect top speed, but I am new to the sport and have never tried. Perhaps a better question would be how do you shim the naish 2140 and rear wing x for more speed?

I'm no expert, but I think you would have to go smaller. The only way I can get more speed out of my 2140 is by riding it at max elevation ( without breaching ) on an 85cm mast. The higher I ride, the better speed I can maintain.

as speed increases, you can experience a lot more front foot pressure, so possibly if your feet are in a fixed position on the board (straps or sweet spot on the board), moving the mast back could give you more leverage to keep the foil under control at the higher end of the speed range of your front wing. You can also take out angle in the stabilizer (or go to smaller stab) to reduce front foot pressure and reduce drag.

There's a video on Alan Cadiz IG where he is going for speed, and you can see how far forward both his feet are (and the way he is weighting his board) trying to keep the nose down.

www.instagram.com/p/CgBS-QGDHUv/

But if your goal is to go fast, you'd want a smaller HA foil than what you have. But always good to focus on setup and technique to get the most out of what you have.... some people are fast on slow stuff, and others are not that fast on really fast gear.

I'm fastest on the gear I know best and know I have setup to my liking.

You can get a slight increase in speed w the 2140HA. However, as already mentioned, the best way to do this is with a smaller stabilizer. I've used the smallest HA, the 210 and there is an obvious increase in speed. However, it can take awhile to get use to the trim stability.
The second thing you can do is add thin nylon or rubber washers to the front screw of the 280HA. Once again..you'll feel a big difference w even one thin washer.
I'm both cases, average trim stability goes down. The 220HA will require a lighter touch, especially w back foot.
With the shim you'll feel slower initial lift and a need for slighter more back foot pressure.
I like the smaller stab best, turning goes through the roof and speed increases. No noticeable difference in takeoff. Pumping glide also increases but the technique requires a delicate touch which takes time. Once you figure it out your also expending much less energy. Think micro smooth pumps for connecting the dots.
Have fun
But for another full gear of speed, drop down to the 1240HA which is my fav or connecting the dots on an afternoon seabreeze. I'm 75 k btw.

Shim tail up for more speed (less lift) and move the foil forward to get the lift back.

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Fitzsup said..
I tend to leave my mast in the same position ,middle of the track,it works well.

just wondering if moving the mast makes the foil(board) faster or is mast position about more or less lift.

Im riding a Naish 2140,while I love it,easy lift ,cruzy pumps and glides well,I'm getting lazy.

So,I'm thinking either move the mast or buy a smaller eg 1800ha or should I go smaller???

Thx for any advice.

Just wondering.. how heavy are you?

A fat old bastard??????

95 kgs,maybe your on the right track ,to many coronas,

Riding a Naish 125 litre ,using a 2140 paired with a 310 stabiliser and a 2022 6m unit with the hard handles.

Reason I'm asking is because I'm a tight arse and want to buy the new 5m slick sls,don't want have to buy a new front wing as well.

I luv the 2140 but..

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sunsetsailboards said..
as speed increases, you can experience a lot more front foot pressure, so possibly if your feet are in a fixed position on the board (straps or sweet spot on the board), moving the mast back could give you more leverage to keep the foil under control at the higher end of the speed range of your front wing. You can also take out angle in the stabilizer (or go to smaller stab) to reduce front foot pressure and reduce drag.

There's a video on Alan Cadiz IG where he is going for speed, and you can see how far forward both his feet are (and the way he is weighting his board) trying to keep the nose down.

www.instagram.com/p/CgBS-QGDHUv/

But if your goal is to go fast, you'd want a smaller HA foil than what you have. But always good to focus on setup and technique to get the most out of what you have.... some people are fast on slow stuff, and others are not that fast on really fast gear.

I'm fastest on the gear I know best and know I have setup to my liking.

Alan Cadiz is lightweight so he probably has too much stabiliser downforce for his weight. Changing the stabiliser angle with shims allows you to adjust the stabiliser so that you don't get excessive front or rear foot pressure at high speed. The adjustment depends on your weight, drag from the front wing and stabiliser size. Moving the foil in the track allows balance adjustment across all speeds whereas shimming allows you to control how balance changes as speed increases.

The fastest setup is one where you not getting excessively front or rear foot pressure at speed. In the video Alan Cadiz looks like his speed is limited by his ability to add more front foot pressure.

Can someone measure with a gps what a shim or a smaller stab will provide to a 2140cm2 front wing in term of speed?

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NordRoi said..
Can someone measure with a gps what a shim or a smaller stab will provide to a 2140cm2 front wing in term of speed?

This is the silliest question I've ever seen. Get a smaller front.

The shim or smaller stab is going to make the turning crazy "responsive" twitchy for any noticeable increase in speed. For me the speed difference is a side effective of the increased responsiveness. For speed it might give you another 10%.
Smaller and higher aspect fronts. End of discussion.

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TooMuchEpoxy said..

NordRoi said..
Can someone measure with a gps what a shim or a smaller stab will provide to a 2140cm2 front wing in term of speed?

This is the silliest question I've ever seen. Get a smaller front.

The shim or smaller stab is going to make the turning crazy "responsive" twitchy for any noticeable increase in speed. For me the speed difference is a side effective of the increased responsiveness. For speed it might give you another 10%.
Smaller and higher aspect fronts. End of discussion.

I did severals tests in the past with a gps and the bottle neck is the front wing. Shimming and smaller tail wing doesn't do much...this is why I was suggesting testing.

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NordRoi said..

TooMuchEpoxy said..

NordRoi said..
Can someone measure with a gps what a shim or a smaller stab will provide to a 2140cm2 front wing in term of speed?

This is the silliest question I've ever seen. Get a smaller front.

The shim or smaller stab is going to make the turning crazy "responsive" twitchy for any noticeable increase in speed. For me the speed difference is a side effective of the increased responsiveness. For speed it might give you another 10%.
Smaller and higher aspect fronts. End of discussion.

I did severals tests in the past with a gps and the bottle neck is the front wing. Shimming and smaller tail wing doesn't do much...this is why I was suggesting testing.

Mast position has no effect on generating more speed, except you may be able to hold faster speeds without breaching with the mast further back. A smaller thinner front wing will be faster. Shimming and smaller tails will have a minor effect on top speed but can make you feel more comfortable at higher speeds. It is not an exact science.