Hey guys, I finally have a working efoil-40ah pack 65616 and a vesc 72500 if it’s relevant. I have been learning to ride on an “X-OVER ALU - L”. I finally got the ropes, but now it’s feeling pretty slow, but my main issue is the efficiency. Compared to the people I’m riding with, I’m burning way more power. It’s a 1600mm surface area, so it makes sense.
Anyways, with a v2 mast, what could a good next foil be? I weigh about 85-90kg. I need it to be compatible with the current mast, v2, and the fuselage. Would a Fluid or curve make sense?
what propeller? Often that where the efficiency meets the road. I have friends who have that same foil and size and their efficiency is very good. I have the curve and it may bne a bit better but not much in the scheme of efoiling.
120kv motor I believe, with a flite prop.
Pretty hard to answer your question without some detail.
What does feel slow mean?
What is your power usage?
Etc……
Yep fair enough, I will go for a ride tomorrow and log the data. Im just topping out at 24-25mph and my motor amps are set at 180 max. If I remember correctly its pulling over 60a at like 20mph. Ill have more accurate data tomorrow. But it is a big wing so in theory it shouldn’t be very efficient especially compared to a high aspect wing.
I have the X-Over L V2, A Veloce XL V1 and a Fluid H L V2. The Veloce XL is thinner and faster it uses a bit less power than the X-Over L it’s more fun and just as easy to ride. I haven’t tried the Fluid H L yet but it’s significantly thinner and higher aspect it should have a lot more speed and glide. I’ll report on it when I try it. The ice is just gone now but there is lots of debris floating around maybe next week.
When you are running along at 25kmh have someone take a video. With the L size you may be going too slow for your weight. The board should be almost flat which means thew wing is not a large AOA. If the AOA is too large the induced drag can be quite high. If so increase wing size or goa bit faster. I noticed this effect when I had bigger wings to ty that they are more efficient and flatter at low speed.
I just reread your post and you say the L size is 1600cm2 but on the gong site it says 1326. Either way seems like enough foil area. When you are up foiling at 25kmh you normally should use around 1kw.
What is the voltage of your pack?
Hmmm
Your speed doesn’t sound “slow” to me. 20mph is about 30kmh which is about as fast as I want to foil. 25mph is 40kmh which to me is dicey as I’ve fallen at that speed and it left a mark😀 not something I want to repeat.
I mostly use my L size X-Over on the V2 aluminum mast and fuse. The area on my L is 1300 - my XL size X-Over is 1650 so not sure what ver of X-Over you are using when you state L and 1600??
I know that Gong has a complex product offering that isn’t easy to understand so maybe a good idea to post a photo of your setup so the feedback you get is accurate.
I can’t offer an informed opinion on other Gong foil shapes but I do know that riding my XL 1650 size at 40kmh wouldn’t work well as that surface area has a LOT of lift and any small body movement would make it extremely challenging to fly.
Okay, so I think everyone is right—about everything. Regarding the slow speeds, I was definitely barely up on foil and mostly just plowing through the water. Unfortunately, I was having trouble getting my data logging to work, so I just watched the amps while riding (48V pack). I know it would’ve been smarter to monitor watts, but I forgot to.
Anyway, at around 20 mph (~32 km/h) I was pulling approximately 50 amps, and at 22 mph (~35 km/h) it was about 70 amps. I didn’t go much faster than that. Thinking back, I do believe 25 mph (~40 km/h) is realistic, and I still have some headroom to push more amps if needed.
On a full 40Ah pack, I’m only getting about 10 miles (~16 km) of range, but it seems like some people with the same battery capacity are getting closer to 15 miles (~24 km).
And yes—my mistake, the foil is 1300 cm², not what I said earlier. Sorry!
This is what I get using same foil.
I don’t understand your “plowing through the water” comment about those speeds?
I have the same wing a similar capacity pack and I’m about the same weight. The most I have gotten with this wing is 30 km in 1.5 hour. I normally always get at least 20km without trying to maximise the range when I go fast and do lots of turns and fooling around. Of course you get more range if you keep the speed down and glide as much as possible. Maybe your position is not optimal you want to find the right balance where the back foot and front foot pressure is balanced not too much on either foot.
Yeah you’re probably right. I slowed down a bit to like a 20mph/32km/h and shifted my stance around and got like 21km with some battery left at the end, so not too bad. Maybe ill stick with this wing for now.
