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Messages - EastCoastFoiler

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1
Classifieds / Re: Naish HA foil complete 1240 and 1400 $700 complete
« on: January 12, 2023, 02:36:14 AM »
still available, now with brand new 35% carbon mast included.  Get both masts at $700.  Find yourself another fuselage and you'll have 2 complete setups.  1400 and 1240

2
Foil SUP / Re: Longer Fuselage for Stability and Pump
« on: January 10, 2023, 02:59:46 AM »
EastCoastFoiler - do you think that your setups are inherently more pitch stable than one which has more stab lift with mast further back. I understand that in a static state the two setups (forward with less stab lift, and back with more stab lift) achieve the same centre of lift, but I don't know if they behave the same once in use?

I currently positive shim my setup (799 and 899 with 325P on CS ADV fuse) for more pitch stability, and I enjoy the way it rides that way but would be interested to see if I can remove the shim but still keep the pitch stability and possibly increase glide too! Should add this is for winging but the physics will be similar...

@Solent Foiler as you move the mast forward the whole setup becomes less stable.  That’s the limit to this efficiency gain.  That along with the track placement limits of your board.  It is, however, something you can adapt to.  Shim for less lift and love the foil forward till it’s uncomfortable but not unrideable.  Give it a few sessions and it will feel fine.  What was previously unrideable is now uncomfortable, repeat.

3
Foil SUP / Re: Longer Fuselage for Stability and Pump
« on: January 08, 2023, 06:42:02 AM »
Better responsiveness from decreased yaw stability is the goal of most of my tuning.  If I’m riding 2 different foils I’m always putting the mast in the same spot(slammed forward) for yaw consistency, then tuning the tail to mess with the center of lift to get that where I want.  Most of the time this means tuning for less lift more efficiency, giving the pump I want as an added benefit.

I’ve built enough setups from scratch where I can generally hop on a foil, feel what’s happening enough to get it rideable(too much lift vs too little). Then tune to get the feel I want.  Most of the time this means taking something from “doesn’t pump well needs more glide” to “ok this is pumping better now”.  The way you do this is by shimming the tail for less lift and moving the foil forward(hence developing a taste for yaw instability).  You get more and more efficiency this way until you run out of box length OR the instability of having the foil too far forward becomes too much for you.  I’ve had instances where my initial tune for “rideable” was back of the boxes and my ending desired tune was fully forward with 4.5 degrees of angle milled into the fuse.  Foil want from “couldn’t pump a double” to easy 4+.

A longer fuse is going to add stability in a way that’s neutral to efficiency and pump(every other way is a negative to efficiency). Letting you do a more efficient tune(less downforce mast forward) or run a smaller more efficient tail and keep it rideable.  This is why the foiling Moth sailboats have a giant rudder gantry - effectively doubling the distance from the front wing to the rudder foil(their stabilizer).  Increased stability with no loss of efficiency. 


4
Foil SUP / Re: Longer Fuselage for Stability and Pump
« on: January 07, 2023, 10:48:07 AM »
Yaw stability changes

5
Foil SUP / Re: Longer Fuselage for Stability and Pump
« on: January 07, 2023, 03:42:34 AM »
For me, more pitch stability is the antithesis of pump.  Less stability tends to help, with the caveat that you can’t pump if your out of control.  So you want the least stability that you can be 100% in control of all the time.

Next is understanding how you get that stability.  More downforce from the tail is going to produce a more forward Center of effort, and you move the foil back to compensate.  The more rearward foil position is inherently more stable.  A larger tail is also more stable both for this reason and the difficulty of moving it up and down in the water column.

The fuse length comes into play with leverage.  Longer fuse gives the rear wing more leverage letting you ride less downforce and a smaller rear wing for the same effect.  Less downforce required makes less induced drag on the rear and front(with less downforce the front has to work less for the same net lift). Also with more leverage you can ride a smaller rear wing for the same stability resulting in regular drag gains.

6
Classifieds / Re: Naish Matador LT 3M and 5m $350 per
« on: December 19, 2022, 12:08:58 PM »
Price reduction.  $350 for the pair.

7
The Shape Shack / Re: Hollow foil board construction method
« on: December 17, 2022, 03:42:11 AM »
So the end result is a heavier skin(trade a thin laminate for something more substantial) and a lighter cavity/core(trade EPS for air).  This means the ratio of surface area to volume is a big driver of viability.  Bigger, more cavernous boards are a better fit while smaller/skinnier boards are worse. 

In this way this high $$$ construction method is better suited to lower performance shapes(thick, wide, flat is good - skinny, pointy, thin is bad)

Aviso made it work on some pretty small short boards though

8
Classifieds / Naish Matador LT 3M and 5m $350 per
« on: November 09, 2022, 06:37:49 AM »
Good condition matador LTs for sale. $350 per. 3M has 2 sessions, 5m probably has 20. Light use, no damage, great condition. Handles are “broken in” but definitely not worn out(handles were slick from the factory so broken in is a plus)
3M is red, 5m is orange. Come with bags, leash, and pump adapter

Selling to re-up a quiver of something different to try something new

DM for pics

9
The Shape Shack / Re: Foaming Epoxy Additive - supplier?
« on: October 09, 2022, 04:23:11 PM »
I just imagine epoxy foam is to PU foam as Epoxy resin is to PU resin!  Epoxy is king!  Long live epoxy!!!

10
Classifieds / Re: Naish HA foil complete 1240 and 1400 $700 complete
« on: October 04, 2022, 04:05:59 PM »
$600

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The Shape Shack / Re: Foaming Epoxy Additive - supplier?
« on: October 04, 2022, 03:21:29 PM »
I'd love to get my hands on the pro set epoxy foam BUT WHERE!?!?!?!

12
https://www.aircraftspruce.com/catalog/cmpages/divinycellfoam.php?clickkey=12001

Just buy a sheet.  I shape my prone boards out of a solid blank.

13
Classifieds / Re: Gofoil RS 1075 for sale
« on: October 04, 2022, 03:17:02 AM »
i weight 220 lbs, this is a fairly recent video of my riding on the RS 1000

https://www.youtube.com/watch?v=q613FkQW5O8

So for me, this wing seemed like a high performance return to a classic gofoil style of turning.  If you look at how Aguara and people like Dave Kalama ride they are very rooted in a classic surf style, leading with their upper body and using that to focus on really drawn out lines.  This wing really reflects that.

I much prefer a style of riding where I stay upright and make the turn by countersteering with the foil to initiate a turn(kind of like Kane de Wilde's style of riding).  This syle is benefited from a flatter profile (less anhedral) which is also where alot of modern wings are going for breach performance, etc.  I think on this wing the anhedral in the tips makes it want to trip a little bit doing that, its just not to my liking.

14
Classifieds / Re: Gofoil RS 1075 for sale
« on: October 01, 2022, 02:40:30 PM »
SOLD!

15
Classifieds / Gofoil RS 1075 for sale
« on: September 28, 2022, 05:09:56 PM »
RS 1075 for sale.  $550 shipped.  A few sessions on it not my cup of tea.

8four3 343 five539

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