48v 1kw E-bike Motor Hub Wind Turbine - Free Energy Projects - First Day of Testing - 17th Feb 2022
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- เผยแพร่เมื่อ 7 ก.พ. 2025
- My new turbine is a WORK IN PROGRESS and will be constantly changed / updated to see what works better, I have a better quality camera arriving in the next few days.
This is the first test of the new experimental wind turbine, I have had lots of questions and comments I will answer these at the start of the next video, this was a very windy day , the turbine is rock solid, next video we will have 65mph gusts.
Please leave a comment.
Brave man!
Most people are cranking their turbines down in a storm... but youre putting yours up!!!
Mate keep up the good work and can’t wait to see more from you, im looking at doing the same where i live but i will miss this storm that is coming
Yes brother this storm might be the most badass storm in years , should put the video up Saturday evening it's gonna be a blast.
My guy… 2:30 just tap the hole and use a grub screw as a set screw on the shaft, just make sure to use Loctite! 😅 Use the Allen key and not only will it be æsthetically pleasing, but much easier to take on and off.
hope my comments/suggestions aren’t taken as criticism, I love the project and idea!
Another idea would be to put together a ”skin” to cover the mechanism and frame. It’s very “dirty” aerodynamically and is killing efficiency at least a little bit. Perhaps just some 2 inch insulation from foam from the local store. What you’d want is 2 halves(top/bottom) to create a fuselage of sorts, you can stack and glue the foam to get a thick section, then it’s very easy to cut and sand it to shape. The foam collapses with a little bit of pressure, so you can kind of just push it on to the inner gearbox/motor and it will mold to missed protrusions after some preliminary hollowing out. then secure the 2 halves together with a couple dabs of glue where they meet along the seam (leave some foam there to make matching “faces”) and shape it to the best of your ability. Pretty Zen and enjoyable work, just remember to wear a mask! Then once you are done, cover it with some fiberglass. Like a surfboard! You now have an areodynamic shell with foam on the inside perfectly molded to the inner structure. Cut it in half. Cut it along a horizontal line so that you can leave the top solid, preventing water dripping in, with vents on the bottom. Pick some areas of foam that “molded” to a structural part of the inner mechanism that you would want have support the “fuselage” and fiberglass that arEa.
If you want to get real cool with it, put some NACA ducts for cooling. Now you have better efficiency and protection from the elements. The 2 halves can be attached with a hinge and latch, tape, whatever you’d like, with it using the fiberglass inside shape to “hold/hug” itself onto the frame, the clamshell body becomes a clamp. They make extruded rubber seals of all types for the “in between”, and definitely make sure to have proper venting/cooling.
Also the “concave” wing is definitely causing/suffering from massive turbulence at those air speeds. Random guess but at least halfway out the radius you are getting major separation and drag. An easy remedy would be to maintain the outer curve, the “convex” side, but fill in the concave side to make it flat. Fill it in with expanding foam, sand flat, and run a sheet of fiberglass? Basically you want a real airfoil at your level of advanced engineering/building. I say this coming *in peace* as an aviation nerd and model RC “pilot” 😉 so the Airfoil is something I can get really “spun up” about, figured I’d “take you under my wing” and share some knowledge. 🤜🏼🤛🏼
You may even wanna try linking up with some RC model blokes that cut wing “cores” out of foam using a CNC controlled “hot wire”, pretty cool stuff. Wings can be made with almost any airfoil, and importantly for you, twist, as it’s a propeller with different AOA… it would be a cool collaboration, and theyre all wizzes with e-motors etc.
Skål
The design for this wind turbine has completely changed. I don't know if you saw my video I put up yesterday. Thank you for the comment.
Good stuff
Cheers brother stay tuned for more epic designs!!!
Can you put some plywood or peace of sheet metal on the frame of the turbine (axial oriented) so it can help it turn into the wind ? BTW , I like your videos , keep it up.
I really love it without a tail brother , I have sorted the top inside of the tower now it will turn into the wind super easy :), thanks man I will keep it up we have the biggest storm in ten years hitting tomorrow.
What voltage are your batteries? I was looking into using an old 1kw 48v ebike motor i have for a vawt but i need 57v to fully chage my 48v battery
Please if I may ask? How normal is for brushless motor to generate sound as it is used as generator with constant current but different voltage.Thank you very much!
These types of motors do make noise, this one is a 48v motor but it starts screaming at 33v, the DC motors are even louder
"added a brace here...".
admit it, you hacked up an F-clamp... hope it was a junk one ;)
this is adequate... but you really wanna run that motor through some tests, ideally with a lathe. fixed speed...
the power it takes to run is no indication of the power it can develop. it only has the flux of the magnets inside it to produce an EMF, it isnt being fed a current to produce magnetic fields in the pole pieces.
spin it at 500 or so. you want...
open circuit voltage.
short circuit current.
torque absorbed when shorted. ie, an arm, a set of scales, and some maths if it isnt a foot long in lbs or a meter long in newtons...
winding resistance.
the short current (the shunt of a high current ammeter is good enough as a "short"...) and the winding resistance, I2R, will give the absolute maximum power you can ever draw before burning out the generator.
now comes the fun part... loads.
if you simply start putting decade resistance across the output, 10, 1, 0.1, etc... (nichrome, wound as heaters as they will get HOT. try boiling water?) measure voltage, do the maths for amps and I2R...
you find theres a specific resistance that it works best at. about 2x the winding resistance.
think about this... if the generator is shorted, where is the heat generated? in the entire winding. when there is a resistance with current flow, that same current flows through the entire winding. too high a resistance, and current in the total circuit is limited.
too low a resistance, and the "load" becomes only a small fraction of the total resistance of the circuit. you burn the windings out.
and from that, you then start seeing that batteries are not an ideal load at all.
you have a generator, and it can deliver say, 300W. at 12v, at 25A. 0R48 for the load. or I2R ...25x25x0.48=300W.
you put batteries on, say SLA. they dont charge at 12v. they charge at 14.4v.
yet the batteries may not even present 0.48 "load". they might be 0.2 internal resistance... the generator voltage will sage as it tries to deliver current to this load, but teh batteries themselves dont actually charge unless theyre at 14.4.
the only way to get the generator to hit 14.4 is to increase the resistance it sees, at which point teh current it can deliver is limited...
so the batteries level out, find this point where they load down the generator just enough but can never actually utilise the generator to its full capability.
if you generate electricity, you are stuck to this narrow window where you cant use wind below a certain speed, and you cant do anything above a certain speed as the generator is saturated, or the batteries cant take the power produced. its a PM generator, limited flux, and can only produce so much.
if you focus on simply making heat... you can grab every watt available before betz gets annoyed. regardless of how hard its blowing.
It would be good to have the wind speed so you can see what speed produces what power....
I don't have a windspeed device but I do put the approx wind speed at the start of the video, thanks.
Hi!! What was the peak power it produced? And what are the specs of this hub motor? Cheers!!
389 watts was the most I saw but am making changes and it's going back on the tower.
@@GavinFreedomLover and what is nominal power and voltage of this motor?
Not sure its a 10 year old ebike motor think its 48v 1000w but obviously it's not designed to be used on a wind turbine.
Try thr hovearboard motor and tell as how mean w/h will preduice and is it best than a solar panel of 480 wh