from what I can see of your airfoil I think it is a high performance blade and needs a lot more wind but opening up the angle of attack might give it a little more at the lower wind speed. try maybe 3-5 degrees out and if that doesn't work try in. I think you need to get up in the air with alot more structure on the blade mounts and pole. keep it up though cause the never stops. It just goes somewhere else when u need it
Yes, axial flux, but I didn't do a good job on it. My stator is very warpped because I didn't clamp it down when I poured it. I will do better next time. I got the magnets from the windstuffnow site. When I build an alt that works well, I'll post the specs. This one is not worth duplicating.
Hey Eric, since you were asking about the alt, I thought I'd let you know I teamed up with a guy named LymxSteam on youtube and we created the ultimate alternator. You can see if in the USVAWT channel. (The new name we call ourselves)
Sam are you still working on your left type VAWT? I have to say, when something with a 5 ft diameter is spinning above your head at 200 RPM, it's SCARY! I'm just glade mine is Styrofoam and light aluminum. If it was wood I think I would have ran for cover.
Congratulation! That's a big turbine for such a small pole. That may be an advantage of lift type blades ... not much area for side loading. Did I hear right that the blades drop out of warp; could be a good new technical term. :-) Based on your results, I think I want to try augmenting my Savonius turbine with some lifting blades at say 3x the diameter.
Is the tip towards the center or away? definately should be getting more power. at 200 rpm it should at least do 50-80 watts for a medium speed range unit higher for a low speed.. By the way how fast was the wind blowing?
Very nice. Bravo :)
since U are just testing and U dont generate much power, you could try reducing the diameter of the turbine and get some more speed (and voltage).
...and maybe get a serious pole??? :)))
Zypkin 1 year ago
from what I can see of your airfoil I think it is a high performance blade and needs a lot more wind but opening up the angle of attack might give it a little more at the lower wind speed. try maybe 3-5 degrees out and if that doesn't work try in. I think you need to get up in the air with alot more structure on the blade mounts and pole. keep it up though cause the never stops. It just goes somewhere else when u need it
itsandbits1 1 year ago
Hi, is your generator a axial flux one?
What wire and how many rounds did you use if so.
And how stong are your magnets?
By the way, great progress. Keep it up
Greetings
Erik
rikkiesix 1 year ago
@rikkiesix
Yes, axial flux, but I didn't do a good job on it. My stator is very warpped because I didn't clamp it down when I poured it. I will do better next time. I got the magnets from the windstuffnow site. When I build an alt that works well, I'll post the specs. This one is not worth duplicating.
sjh7132 1 year ago
@rikkiesix
Hey Eric, since you were asking about the alt, I thought I'd let you know I teamed up with a guy named LymxSteam on youtube and we created the ultimate alternator. You can see if in the USVAWT channel. (The new name we call ourselves)
sjh7132 1 year ago
i like it. true.
The mass (weight) does help the rotation. light blades need the rpm.
not bad dude.
i wish i had the open land/space. I live in a valley full of trees.
great works.
sam
emagnets 1 year ago
@emagnets
Sam are you still working on your left type VAWT? I have to say, when something with a 5 ft diameter is spinning above your head at 200 RPM, it's SCARY! I'm just glade mine is Styrofoam and light aluminum. If it was wood I think I would have ran for cover.
sjh7132 1 year ago
Congratulation! That's a big turbine for such a small pole. That may be an advantage of lift type blades ... not much area for side loading. Did I hear right that the blades drop out of warp; could be a good new technical term. :-) Based on your results, I think I want to try augmenting my Savonius turbine with some lifting blades at say 3x the diameter.
Caleb6543 1 year ago
@Caleb6543
Yes, I'm a Trekie. I was thinking that a lenz inner VAWT with some outboard lift blades that were match properly could be a killer combination.
sjh7132 1 year ago
whats the angle of attack on your blades???
Is the tip towards the center or away? definately should be getting more power. at 200 rpm it should at least do 50-80 watts for a medium speed range unit higher for a low speed.. By the way how fast was the wind blowing?
itsandbits1 1 year ago
@itsandbits1
The AOA is 0 degrees. (mounted at the 40% point of the wing.). I'd guess the wind was about 15 mph. TSR was about 2.3.
sjh7132 1 year ago