1853 Freewheel For A Flywheel
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- เผยแพร่เมื่อ 1 มี.ค. 2023
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Very nice, I'm impressed at how fast you have become an expert in 3d modeling & printing... being able to have an idea and make it come to life!
Thank you so much 😀
He's an amazing autodidactic polymath!
@@THEOGGUNSHOW I must agree with that!
@@THEOGGUNSHOW How dare you use that kind of language!!!
@@Pwecko 😂🤣
Very nice! Here in the states, you can get 25 pound bags of "birdshot" for shotguns, in varying sizes (basically a whole bunch of really tiny lead balls). Weight can be added to a 3D printed flywheel by designing open "pockets" inside the wheel.
The lead birdshot can be mixed with 2-part epoxy (or JB Weld) into a "slurry, and then packed into these open pockets on the flywheel. Once the epoxy cures, it stays where it is and adds weight to the flywheel.
It may be harder to get birdshot in the UK, but the same effect can be achieved with fishing weights or wheel weights, or with steel BB's.
You made a mower pull start!
They tend to have one small addition. Counterweights on the pegs so they engage when the assembly is spun, and the springs pull them back out of the way when not spinning. So rougher engagement, but no wear or losses through friction while disengaged.
Thank you for a very useful mechanism explanation.
I find this video a-pawl-ing! 😁
1854: *"using freewheels in wind energy devices"* 😂
Nice job man! I always thought that was fascinating when i got my first 9 speed bike.
cheers mate - me too lol
Thanks so much for your doing these types of videos.
Take a look inside a hand press flash light (torch). The pawls are are engaged by centrifugal force. The generator inside these are fascinating too. Much like what Rob demonstrated the other day in video 1849.
I have one of those hand crank torches. Well, it's a squeeze based one but it has a clear case so you can see the mechanism inside. What gets interesting is that the faster you can get it going, you reach a point where the torque you put on the handle drops off as the rpm increases. It's like when you try to peddle down hill on a bike where you are peddling like mad but it doesn't feel like you can add any more effort because the drivetrain powered by you is at a lower RPM than the rear wheel which is being powered by gravity and so you can't match the rpm to engage the pawls.
"...gluing one to my eyelid..."
That sounds like a very entertaining video
Thank you. 👍🐝🌞
I loved this because now I really understand how my bicycle works but it seems it would be easier to just use an old bicycle you can very easily find.
Better yet: bicycle speedometers/odometers use a magnet that is made to clip on the spokes. You might want to put a bigger magnet on that, but the last thing people will raid when the grid goes down are bicycle speedometers kits and speaker magnets. Think about it!!!
Very grateful
cheers mate
Maybe a useful option with a free wheel is that you could have two separate power sources for recharging something like a gravity generator where one source could be wind power via a gear reduction and the other could a hand operated crank handle. This way when recharging via the crank handle you will not have the extra load of driving the gear reduction of the wind power input in reverse.
Wish I had a power sauce...
There is also a sprag clutch, centrifugal clutch...
I wish I was as happy as you seem to be Robert.
Awesome 👏
❤❤❤❤I love this tutorial. I just happen to be planning this exact build, lol
You're mighty fly, for a flywheel guy
lololol
TH-cam has an antique Sturmey Archer infomercial explaining sun and pinion gearing. It is hilarious. And captivating.
Good one!
Suggestion: The pawls themselves rub on the cog & make the clicking sound. This is friction! taking power from the flywheel.
1) The springs in compression are far too strong. Orientate them on their sides, bearing against the pawls far more lightly.
2) discard the springs entirely. Reprint the pawls with a 'tail' that extends the other side of the pin from the 'nose'. Put a weight on the tail. Then it will only engage on the cog when the driving wheel spins, the weights fly out under centrifugal force. & the pawls engage. There could even be a very light spring holding the pawls disengaged until the driving wheel spins & the weights swing out by overcoming the light spring
That's really cool.
Hello sir.. You should take a look at the freewheel that was in the Saab two stroke cars from the fifties on until the seventies. They were completely soundless and without friction. A small gadget you could hold in your hand could transmit up to 50 horsepower easily. Once Saab's engines grew beyond that, they abandoned the freewheel idea - regrettably.. Those cars with the freewheel were a dream to drive.
Having a great imagination helps Thank you for your Videos
Glad you like them!
These video really fire up the imagination. Now, I'm wondering how to make 3d printed centrifugal clutch and how that would compare to a freewheel.
If only Gilligan and the Skipper had seen this video it could've saved them loads of work with their bamboo bicycle-powered laundry machine.
lololol
Also could be handy for things like wavering wind energy and such. if you have a branch blowing back and fourth, or a big sail cloth in a blustering wind. and want to turn it into single direction spinning. tie a rope to it and wrap it around a shaft to a spring now when the rope gets tugged one way it spins, and in the other way it free wheels. My dad built a similar one to improve a medieval style springpole lathe.
You can find and purchase one-way bearings, I've not searched for any, but for an 600n RC helicopter.. RC hardware is a bit pricey, but I'm sure if RC has them, they're available within a commercial vendor setting.
Happy fabrications! God bless you all!
i reckon palls made as 3d kinetic aspects of the print would be a nice lil upgrade :)
Keep going Rob, you’ll print a whole bike….
Yes, flywheels can store energy. Mechanical freewheels though have way too much friction and the battery would be really inefficient losing energy rapidly even when not being drawn from. Something as close to frictionless as possible is needed. Maybe something like a ring of magnetic bearings on a horizontal flywheel for the "near frictionless" part, retractable magnetic gears to spin it up on one side and retractable coils on the other for drawing out the energy. Retractable so that when either the magnetic gears or the draw down coils are not engaged they don't act as a drag on the wheel like the physical pawls will.
I saw this in another version called a one way Bering, maker's muse TH-cam channel is one example of making them with 3d printing
you should try out using fingers like in a lawn more or most pull start small motors, they wont engage until the drive wheel is spinning a certain speed then they default to disengaged, would reduce friction
sounds the business mate!
love the clicking lol
And as a bonus , you can take it to the football match !
This is going to be an extra interesting series all your shows are interesting and I enjoy them immensely so I'm looking forward to this, will you be focusing on one project or will you be making more than one creation at a time and adding your progress with this on at the end of your other work? I do much prefer the longer shows and even more so when you explain what you are doing and why you are doing it. I also love how you pick up older machinery to repair and bring back to life but do you do the same with your hand tools, every old tool used has a story, I look at your lathe and wonder how many operators it had before you and how each one of them have used it to feed their families, I believe everything had a story and old tools have to be respected, just like they are over in Japan when this beautiful and deadly creation was first brought to life. This is why I've watched your channel and shows, I believe you also have respect for whatever you use as it's the tools that allow you to use your considerable talent to create these amazing projects. Thank you so much for sharing your work with us it is much appreciated, all the best from Scotland.
a pull cord assembly for a lawnmower engine would work. in combination with a flywheel.
ive no experience in 3D printing but hours of pullcord training 😁
Very nice vidio...
Hello Robert thank you for another great video! Are the stl files available for download?
You my friend are burning through a lot of plastic! Lol
I remember as a kid wondering why my bike made that clicking noise, once I got a new bike later on I took apart my old one and found out! I was amazed that it didn't wear out!
I know - the pawls are tiny!
ooo very good robert ... i wonder if the the ratchet clicker is causing friction maybe should run on a fair bit more imo
The old Detroit locker diff
Tomorrows video is on the print bed.
I love the work, just too bad this one is in black. A sprits of light colored spray paint would go a long way to seeing it on camera, not coating it, just enough to contrast the edges. 👍
I was worried for a sec the 3D printer fad was gone, luckily it is back in the very next video 😆😉
yeah - I don't like black - but it was cheap - you will be pleased to know I have nearly finished the black and ordered a grey - which I like lol
@@ThinkingandTinkering I COMPLETELY understand that, when drafting use what you got, I just know even the smallest amount of plastic compatible spray paint with a single misting is an affordable way to keep you demonstrations top notch and highlight your excellent modeling work.
I enjoyed the clearly explained mechanical principle here. Now, how can I get this into a build of my own 🤔
Small engine pull start pauls are driven out by centrifugal forces!
are they - cheers mate
Have you encountered the print in place 'one way bearing' designs out there?
They're very small & surprisingly good, though I imagine a bought sprag clutch would work better
You could make a wedge bearing or one way bearing.
I didn't think wedge bearings allowed freewheeling mate - only for thing to turn one way
Excellent! I bet if the springs were slightly shortened it might continue to spin a bit longer, due to having less friction. Thoughts?
Agreed, the loud clicking shows high friction. I'd actually reposition the springs so they bear on the pawl sideways, lightly.
Or better, dispense with the springs entirely, print the pawls with a tail opposite the nose & attach flyweights that fling out only when the driving wheel spins. These could be held disengaged with very light springs which are overcome by the centrifugal force of the flyweight.
If the driving whell is not spinning faster than the flywheel, it does nothing anyway.
Breat 3d printing, Very intresting
To even reduce the friction of the ratchets, when pulling the string like starting any small engine the first 2 or 3 inches activate the ratchets!
cheers mate
I wonder if the spring and friction could be replaced with magnets and current in some way
Makers muse made one way bearing that you might want to test out.
Could use a one way bearing so it would be quiet
An alternative method I've seen is an oval hole with rollers on the inside. The idea is that when going one way the rollers move and effectively act like a brake between the two parts. The only upsides I can see with it is to remove the click click click noise and to make a damped pickup effect (if using hard rubber rollers to avoid a sudden load and provide a kind of damping effect), and possibly cheaper to make with less parts (no springs as they angular motion pushes them in one direction or the other). I'm sure there are some downsides I can't think of as well :D
Pretty sure that was a bad explanation of it :P
Possible to make a freewheel that uses magnets to convey the force, but without friction when disengaged?
A one-way roller clutch could also be used.
Rob... remember the flapping windmill...what if you used magnets to oppose the flap on both ends. It never closes so the end can pick it up and and when it goes against the wind it is push down. A secondarily, amoving flap would also change a magnetic field.
I was pondering that some more mate - I will be returning to it - thanks for sharing
@@ThinkingandTinkering the kindest and most "doing" content creator on TH-cam! :)
I love how rudimentary this is, though for that weight tolerance perhaps two pins adds too much resistance to your flywheel in that model.
Kinda like the center of washing machine
Fun Project Rob. :) Hey I just wanted to also say that TESLA announced yesterday that they are going 0% Rare Earth for their new motors and I instantly thought of Niron Magnetics that you pointed out a few months ago. I think that this is going to be profound on a really big way by making cheaper, stronger magnets. They didn't specifically mention Niron..... but I don't see why it wouldn't be them.
nice heads up mate - yeah I am with you on that one - they seem the furthest ahead in that game and it will be very interesting to see - cheers
I've often wanted to put two bicycle tire flywheels on a common axis, rotate them in opposite directions, at the same speed, and see exactly what the results would be. They should attempt to precess in opposite directions and cancel each other out. But wouldn't that opposition result in a bending force upon the axle? Would that force not then be felt as a resistance to angular tilt? Or would it feel like tilting a non spinning pair of wheels?
you get a differential mate - I used two freewheels in a previous video to build exactly that for a small car I built
@Robert Murray-Smith
Well, true, it does require some sort of differential to achieve the result of the flywheels spinning at the same speed.
But when airplane propellers are counter rotated, does it remove the difficulty in turning? Or just make it evenly difficult regardless of the direction of the turn?
Tilting the non rotating pair would not exert a bending force on the axle, while tilting the spinning pair does exert a force. I have a hard time conceptualizing the creation of essentially free undetectable energy going into the bending without some feedback to the outside of the system.
Essentially, it creates a tunable moment of inertia about any axis perpendicular to the axis of spin, without the addition of mass to the system.
In your Electrostatic Motor video you mentioned Laser Hacker. Is this a channel on TH-cam?
ever use dvd/cd rom center wheel as a bearing ? just a thought for future ideas.........!? gl
"Pedal Power", OK!!!
P.s. it was on the electrostatic video
cheers mate
What if you invert the design so that it not engaged by default, and kicks in when turning the pedal/handle gear. I am thinking the gears must be on the inside the drum pointing inwards and the ratches in the center of the drum pointing outwards towards the gears, so that the ratches would be pushed outwards when giving some momentum and they retracts when not. This way the ratches aren't in contact with gears most of the time, meaning it would spin for longer. I hope this sparks some ideas.
You mean something like a centrifugal clutch
That’s a good idea.
@@jchadd Yes that sounds like it, probably works better too since that uses friction instead of a gear.
Take apart a hand press flash light (torch) and you will find a centrifugal clutch , gears and fly wheel generator. You can find deconstruction video's on TH-cam to see the part's without having to purchase one.
Didn’t some old land rovers have a freewheel overdrive option ?
Idea for you Robert! (I think you've touched on allot of these topics already)
No need for a freewheel
It requires 2 water tanks a large water wheel (built heavy to double act as a flywheel)
one tank is placed under the water wheel but in no way touches the wheel even when full
the water wheel itself is above that tank and under the other tank both tanks are open tops tanks
the water in the top acts as a gravity battery and can be release through a valve (valve for adjustabilty)
this spins the heavy water wheel turning the energy from potential gravitational energy into kinetic energy and you can connnect a generator to this waterwheel to convert it into electrical energy
as it converts energy multiple times it wont be brilliant in efficiency but you would have a system which has 2 forms of stored energy and can be recharged by many other things, american style wind pump, engine driven pump, human powered pump, THE RAIN!, solar driven pumps. just moving water from the bottom tank back to the top tank
as long as the water wheel doesn't touch the water in the bottom tanks it should be possible for it to spin freely and with the adjustable valve you can change how much energy you are producing on the fly and store more in the tanks if your producing more than you need right now.
Attach a pendulum to the cement flywheel
Should anybunny want one of these fast and easy, just take the pull cord off a common 1 cylinder engine.
Same as lawn mowers, snow blowers, gas generators, etc.
I had to rebuild one of these this summer to maintain my farm implements.
There are 2 separate kinds: one is falling balls, and one is a resistance driven sprag.
TH-cam took away the ability to sort videos by oldest to newest. Now trying to scroll back eight years to find an early video is impossible as both the app and the website crash or glitch and put you back at the most recent videos every time you try.
Very frustrating when I want to review older videos.
Another shackle to keep creator's older content from generating revenue.
I'll have to stop swatting flies
we already have wheels........
I dont know how you placed the pawls but sometimes symmetry is not your friend. Badly placed you have to compress two springs at once but by careful placing you halve the load by activating one after the other. Too much load naturally slows down the freewheel. Granted it is not always possible to optimise the arrangement. If this is complete bo&&ocks feel free to blow a raspberry in my direction.
Another fake win for me lol . I think they are mocking me sending me fake wins on comments that call them out . Well I guess ignoring them is the best we got
What ya gonna use the freewheel for ? Seems like a good idea for wind if you can get it started with a flywheel . Could even out the gusts
curses you saw right through me - yep freewheel and wind lol- I am an open book!
And I thought I was the only person winning stuff. They're getting More creative in their skullduggery.
But I'm just not sure why they do it?
@@ThinkingandTinkering ah ha ! Go Robert Go! 🎶da do da do do do🎶
@@ThinkingandTinkering did you get rid of that motor on your atmospheric yet?
Finally 1st.
awesome lol
Think scammers have been using your name on free giveaway competition ..using telegram under your name ..they said I'd won then sent a shipping list in dollars so I could receive the prize ..I asked if I could call you as they were texting but no reply...careful of these scams
I did a video warning folks of this mate
I watched it lol and still took the bait ..all the best mate I'll still be watching the channel ..love it 👍👍👍
What an ap-pawl-ing video😀🫡