North Sonar SF - Impressions

Just got off a marathon session doing runners in waist high east coast 200 lb(i’m down 20 which is nice!) Rode the North SF 930 with 178 tail on the 72 mast borrowed from my buddy Forest (thanks bro!). Just wanted to share how great this setup was.

Normally ride the 170 Progression and in the non-stock way i have it set up i is great for small conditions but feel alot of nose diving at speed. Also had some construction issues (i’ve cracked many unibody foils) and price issues so i decided to look at the north.

I found the setup to be stiff enough - not the best in the world but certainly servicable. There was a HAIR of mast fuse movement and equivalent fuse wing movement but defintely not a deal breaker. I LOVE the price of the wings, etc. I can actually afford to have a quiver and always be on the right wing - which i feel like would make up for any deficiences in design (being on the right size wing trumps being on the best design) but i don’t feel like the design was lacking.

For a “better wave foil” it was awesome. Handled excess speed really well, no nose diving at speed, stayed predictable but still had some pump to it - certanily not an all day pumper like the 170 but servicable for with the wind runners or and some 3+ dips on a beach session.

I feel like the biggest deficiency is the mast sizing. 72 was servicable but having soemthing a hair longer without jumping to the next size up (85!) would be great. I’m going to make a 77 (north, if your listening steal this idea and do a 77!) which should be perfect for a better wave foil. With that compact span on the 930 (900mm) the 72 was OK for breach resistance on turns and being so predictable i didn’t need the extra length for recovery while blasting through turblence/nosediving.

Looking at the rest of the SF range it seems really well proportioned for surf focused foils. Slightly lower AR than something like the Prog, etc so probably not pumping quite as well but based on the 930 the turning of the shorter span seems to make up for it. I like how they aren’t totally proportional size changes and but also don’t leave the span the same for all. The whole range looks well done - i’m definately eager for a good day to get on the 680. I’m thinking keep my prog kit (repaired, $0 resale) for groveling conditions, 930 for decent waves, and maybe 680 for winging and being ambitious (and maybe end up disipointed) on epic days.

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I towed with the 680 and the 85cm mast and really liked it. It’s the smallest foil I’ve used and was still able to pump it. The turns felt incredible.

I’m surprised North isn’t mentioned more around here. Seems like a very good product at a reasonable price.

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Just curious, what tails have you tried with your p170?

The stock 13’ g10 pack. Settled on a home-re-shaped solid carbon tail that helped a lot. I think the g10 wings were to flexy but i was never so enamored with the foil I was willing to spend $300 chasing down a prog tail or a marlin.

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My buddy is really liking that 930. He liked it even more after I pointed out his stabilizer was on backwards. :joy:

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So I’ve got my custom 77cm NL mast going for this setup, just waiting on some swell/wind There’s definately some stiffness lost with the carbon fuse vs the aluminum. Gonna do some back to back testing this week with the NL mast vs the stock mast and the different fuses to find the sweet spot. Maybe try the 680 in there too. I wouldn’t want to ever use a big big span wing on this setup though, I just don’t think the design is stiff enough for it.

OMG the aluminum fuse is THE BOMB! All north riders throw away that garbage carbon fuse and switch to aluminum! Wayyy stiffer! With the v1 NL mast it might be one of the stiffest setups i’ve ever encountered! (Connection fit being the critical factor).

I’m winging the North system the last 18 months, SF930, HA850 and recently the SF680. Love it. The SF680 is sick, never thought I’d be on a sub 700 foil and its a dream in good sea energy. The SF930 is a little slow but has an amazing low stall speed and can be pumped out from almost a standstill. We have a good appreciation thread going over on seabreeze forum, not many north riders out there.

That is really interesting, what fuse length are ya using? are how heavy are ya? I don’t notice any flex but maybe I’m just accepting it.

On the carbon There’s a little flex in the fuse and wing connection. Not movement but just loading and unloading a little more than the aluminum. The mast fuse connection on the carbon has a little movement you can feel if you shove your fingers in the gap then torque the wing with your other hand.

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