Balancing The Momentum Wheel - And Speed Trials! 

Watching the wheel spinning would be the perfect opportunity to tell us a story!

I love, i absolutely love that this man just spun up this giant wheel and then just up and left us sitting in his barn to watch it spin. Such a Tim move.

When you put on the hand crank I realized you have recreated your animated logo in reality.

As someone who's late to your channel, I had no idea that you made the wheel and woodchopper and everything yourself. Your ingenuity is incredible!

16 to 17 min that's almost double from the first. AWESOME. {{ Now put a coil on each leg, and several neo magnets on the wheel, and you could alternately make some low voltage lighting /dc power for the building that it will be housed in. }} Couple thousand led Christmas lights, perhaps. Defiantly enough to light up your length of track thus far, and your drying tunnel. CCHHEERRSSSSS

Tim you do wonders for my health were watching the wheel to the end .My blood pressure was down thank goodness for the wheel 🛞.Love the sound of the birds 🦅.All the best what a way to spend an afternoon.GodBless 🤶🤶🎅🎅🎅🌲🌲🌲☮️☮️☮️

"Now... now... now... now... now... now... now... now... now..." I love you guys. You reminds me so much of my youth at homefarm.

"It's curiosly contemplative and I found myself pondering life and ginger biscuits and the world spinning round, you know that curious overlap of the utter meaningless of everything and the simple pleasures we can get from everyday things and patterns and people" Best Commentary Ever : )

I was thinking "this must store an absolutely monumental amount of kinetic energy" not realizing that I was watching a clip of it spinning under it's own power for more than 10 minutes.... incredible work.

Dear sir. Please receive my compliment for making this beautiful flywheel. As an old swedish engineer (should be retired, and are really working at electrical designs, and automation) I still love to practise, those mechanicals we dealt with in school in the early 70-ths. I could not resist to estimate some forces of the wheel, though I that felt, you have underestimated your good design. I feel that it is capable of much more inertia, but I have forgotten the purpose of it, bad me. I love your motor, however, and your railway projects. I may have tried something similar in your situations. I also love, your love to eachother. I also had a wife many years ago, but now to my calcules, and please excuse some bad english. I decided to guess about datas, and assumed your 1/10 division of speeds from a 250mm belt-wheel, to a circumference 2500 mm of the flywheel, and assumed a weightpoint radius of 1,2m. The circumference is pi times the diameter or pi times 2* the radius, that rounded will be 2,4 ' pi= 7,5 m I counted to 10 spokes, and guesses the wood volume to 16 Litres per section, though I counted 10 spokes, and multiplied with 0,7 as the density of oak. It went 11,2 kg, and I added a guess of the steel, and got a total of 15 kg per spoke section. (this may be wrong, but not too far away) The sections are interleaved, and helps eachother in average, but I don't take this into count, though wood swells and dries after the weather. I love your design, as a real beauty, and may have just one hint. Some radial bolts, that keeps the wood from radial splits. (probably not needed, and dependent of velocity), However. I consider the sections as massive monolites of m=15 kg, and the centre weight of 1,2 m, as the model, and no interleaved friends. (we did such in my old school) I search for the centripital force in just one spoke, and just one section of the rim. Never count on the possible friends beside. The calcule of the centripetal force in simple as we use the ISO-units F= m * v2/r. F in Newtons, m in kg, v in m/s, and r in metres. We variate the rpm,s. 60 rpm=1r/s, and 120 rpm is 2r/s. Easy peasy. So what are the forces in Newtons radially? First we will know the velocity that is r/s times the cirkumference, that is 7,5 m/s at 1r/s, and 15 at 2r/s. @1r/s F= 15*7,5*7,5/1,2= 703 N @2r/s F=15*15'15/1,2=2113 N. Is that a problem? Let us take a view of the construction.. The spokes are beautiful, and overdrivenly strong for the purpose, so there are no needs to search for weakness. I don't even suspect, that the connections to hub, though the radial forces, will not belong to the bolt areas, but the friction of the joint, that is heavily more than a bolt is capable of, if So I is tightened as is provided. So I decided to concentrate, what I can see as the weakest point in the system, and should be the bolt-joints to the wood. Though wood is depentent of moistureness, it is not possible to rely of frictions, so it can depend on only one bolt's resistance totally, even if they are doubled up. One bolt can take the force of example the left side, and the same, or the other bolt might take the stress from the right side, so at maximum we can't rely of more than two square areas of bolts to share the forces, thougt the friction against the wood is not reliable. But now consider: This feels cool anyway, and the flywheel seems to be secure of at least 120 rpm. The inertia is quadrupled... Well we focusate at only bolt, that may take all of the stress in just one edge of clippings cause. Worst of all cases. I presume M10 bolts, of worst case of steel, that will not deform below 200 N/mm2. And that is really bad steel, hardly sold. The area of an assumed M10 bolt is approx 36mm2 So the sigma would be F/A, and 2113/36= 57 N/mm2, and makes it almost four cased of security, to the worst class of steel, and the worst class of tensions. So give the wheel up to at least 120 rpm if you want with full security, but perhaps secure the wood pieces with some screws or bolts radially. You know what I mean. The inertia of a flywheel quadruples With the double of the velocity. Use it, to serve your needs. Dear sir, wife, family and friends. I write just because of love and a fellowship I want to Ireland. I know not very much, as I presume you know not much of Sweden either, but we share the community of EU, and can make easy business without tolls, and others. Please intake my love, and curiosity of Ireland, and the nice people, as of yours. Nowmore we share a community, and that is good. Feel free so ask of anything. Bjoern

That handle is by far the most dangerous part I have seen of this build. I think I would have used an old bicycle peddle and sprocket so that it could free-wheel.

Speaking of cold, it's currently -28C in Whitehorse, Yukon, and it's supposed to get to -35C by early Monday morning.🥶

You did a beautiful job getting the wheel round I was watching it spin and it is unbelievably true, when I watch the light flicker. If I was your neighbor I be over at your place all the time. You and Sandra seem to be having a joyous life. Joyful holidays to you and your supporters

Twice the time spinning! That’s pretty good! The noisy wheel last time was nice, but the silence of such a big mechanism is interesting too

I like how there's just 16 minutes of a huge wheel spinning.

wheel is looking amazing. Its crazy what people can build in there workshops. Love the railway as well!

Gobsmacked! I have way too many thoughts but yes, I do count my/our blessings consciously every day.

The simple things in life are the best, and I could watch that wheel spin with the birds singing all day. 😊

You could achieve the same of even greater gear reduction with a jack shaft and have different options to spin other pieces of equipment. I have thought about building a giant flywheel for a very long time but never actually took the time to do it. Impressive.

Your wheel test is such a wonderful metaphor for a life well lived: it starts gradually; accelerates and builds up energy and momentum; reaches full potential operating at maximum power; then gradually it eases, relaxes and slows; until gently, gently, it returns to stillness and serenity, from whence it came. It is indeed poetic 😊 Thank you for a lovely meditative video

I'm happy to see that, the Wheel is being continued on. Also last time we got 23 minutes of video, now it's 25. Impressive how long last and this video is. What will we get next time?, my guess would be 28 minutes. Great job on the construction of the Wheel.

"Now.... now.... now.... (etc)....!" Brilliant work, Tim.

Amazing. Usually I’m quick to take the technical knowledge from a video and quickly move on. Art is not something I comfortably enjoy. This is a supreme mating of art and engineering. I can’t stop watching. True art is a job well done.

It's a phenomenal achievement to get that to all go together. You should be very proud of it (and even more proud of yourself!)

Your measurements are spot on. I hope your Christmas goes as smoothly as the great wheel. As always looking forward in the new year for the next step of the "charcoal crusher express".

What a marvelously beautiful as well as functional machine!

I noticed that the counter weight is opposite the handle. It might be near perfect once it comes off. Great video. I have to say my favorite parts are when you are alone and just get things done. An inspiration. Thank you

Perfect oportunity to make your little Intro animation real. :)

Very thought provoking. And you understand the wheel of life very well.

The momentum and balance of the wheel and performance of the bearings under all that weight is very impressive. It's a good testimate to your abilities.

Thanks for the update!! 👍

I once timed the coast down of a large hydro generator. The 600 ton rotor took 55 minutes to come to rest from 225RPM. This machine normally used brakes to come to rest in about 7-8 minutes IIRC. A large steam turbine generator, rotor weight estimated about 200 tons, also took about 55 minutes from 3600RPM. These were normally allowed to coast to rest.

I watch my washing machine sometimes. It is therapeutic. Your wheel is very impressive.

Great flywheel! You'll have no problem keeping a belt on. The crown on the wheel does all the work for you. Crazy how the belt will try to run to the center on a crowned pulley. You did a very accurate job to come out so smooth first time out. That's called attention to detail and this is a master class.

Tim, you have made a work of art! What a joy to watch the big wheel spin! I love your channel.

I'm waiting for every video of your projects.This is what we need. A balance in life. I think one of the contributors did say that the wheel's wooden rim would be scuffed up using the lathe system. Whatever. It gets more exciting with each each episode. I take this opportunity to wish you and Sandra a very Merry Yuletide and thank both of you and your helpers for providing us with such interesting videos.

What a magnificantly mad project. Loving it.

I love the happiness you're always spreading 🥰

Keep these videos coming. I support your channel and watch them to the end every time

Wow that is really neat Tim, you are a real genius in my eyes!👍👍👍

Hey Tim you have built a really beautiful thing. Even if I can't see the purpose of crushing charcoal like this, there were a lot of much simpler ways to do it but I am so glad you soldiered on with this thing, it really is a work of art.

das ist ja TOLL, im Moment des Stillstandes, hat es sich keinen mm zurück gedreht, alles Richtig gemacht. ❤

What a work of art that’s pretty cool that you made this big wheel. I look forward to seeing the project progress along with the first initial testing of grinding the charcoal.

Here I am watching your wee wheel turn thinking and thinking, now my head hurts 😜

Very good Tim & Will and all others who helped... Bravo!

There's a large park across the street that's empty this time of year, (a Maine winter). I walk my dog there. Just standing still, feeling the open air, looking at the White Mountains is a supreme pleasure. (Nice wheel!)

Excellent thing. I look forward to you putting it to work to see what it can do. 😊

I was half expecting a small local black hole to appear with all that mass 👍🇦🇺

Thank you for sharing this momentum with us.

Love it keep up the great work!

Poetry in motion !

from now, the second half is my favorite video

🚧🚧 OUTSTANDING SIR, you are truly a GENIUS 😇👍🧐 🚧🚧

Interesting project and I love the way you narrate it!

Most amazing achievement ever. Gouge had no chance at that angle but what an incredible outcome. Inspirational.......thank you so very much sir.

Two videos in one week! I'm excited! This series is very cool, I check quite often for new videos. But don't forget about the railway lol

Yule some claim comes from the old Norse word for wheel, so this is very suitable content for the season. Very impressed with your engineering!

That's amazing! Excellent craftsmanship!

A well balanced life. Enjoyment from a simple spin.

I'm impressed!

That is a truly remarkable achievement. Well done.

OUTSTANDING!!

Wonderful job sir! That is just superb.

Well done. Round and round it go's. I love the sound of your sparrows. Good lucky.

that wheel is most impressive. an amazing machine. a source of power. well thought out and expertly built. and also mesmerizing. great job sir.

i love watching your videos because they remind me of the projects my late son loved lathe work welding timber work etc he never wanted to be theoretical engineer but a hands on maker of things

With all the rain you get, you could set up a rain catching system that feeds into a water wheel & get another free energy source. Even a small water wheel could generate power for a water pump(not that you need watering for your garden with all the rain)

Wonderful, thank you. I love your videos.

Incredible Tim! I'm admiring your masterpiece from afar in West Bengal. Congratulations on bringing it all to life! 🥳

Tim I enjoy Your videos so much. I wish Sandra and you a merry holiday this year.

hipnotizing experience, as always great job!

Add a peice of plastic from a bottle or something to one of the spokes for a nice ticking noise! Kinda like some of us did with bikes as kids! XD What a grand wheel though, it's turned out amazingly

That was a very sneaky sign off. I watched that for a lot longer than I needed to! I have a bunch of tools right here that bring all the inner peace I need.

Im just watching this thing spin down again. Very relaxing. Kinetic power. Or something.

16 minutes. Wow, well done. A big improvement from last time.

Reminds me of playing cards on my bicycle, that would sound wonderful. Hello from USA

It's just great so far, really great.

Keep up the good work, Tim.

Replace the bearings grease with oil, reduce drag by using doped canvas over the metalwork like dustbin lids or dinner plates. Used on competition bicycles to good effect.

I've watched zit picking videos, rock crushers working...wood turning on lathes...and now spinning flywheels.

That is amazing Tim

This is an amazing project holy moly

Hey, just 1 small note. Adding weights adds a potential failure point. Probably Still needs weights with what I am gunna suggest, but fewer. I suggest drilling out weight from the heavy side instead of adding weights to the light side since in case of a failure, the absence of material is better than 6+ steel disc's at 17mph being released. I'm not saying structurally compromise it, nor that the design is bad, just that preparing for failure before it happens is a big thing to me. Awesome build anyways though, wish the best of luck

Thanks for uploading this. I really enjoy your videos and projects. I love to tinker, but at a bit smaller scale, so I appreciate the way you think about your projects and what projects you undertake.

Since early childhood I’ve had a great interest for flywheels and all things mechanical, kinetic energy in a heavy flywheel to me is as interesting as flight or electric motor’s or even internal combustion engines

Brilliant design. Well done.

I kinda love the wheel spinning in contemplative silece at the end :D

Thanks for that interlude Tim, I'm almost horizontal with relaxment now haha

I had to balance a blower a little larger than your flywheel and the before and after was dramatic. I went from wearing earplugs under my ear defenders to being able to remove all hearing protection because the blower was balanced. Really nice job 🍻

Watching the wheel spinning down I thought of a few days ago I was trying to adjust a sensitive level and could not get consistent results for a good 10 minutes then it was stable I think when you spun this wheel up you took some rotational energy from the Earth and it slowly gave back as the bearings friction slowed the wheel

Really cool

❤️ Spectacular! ❤️😊

I watched it aswell. Thanks for sharing

Loved it😊😊👌

Well that's impressive well balanced!!! Be very interesting how you fit and run the cheese grater😄😄 on the wheel!! Anyway Merry Christmas and a Happy New Year Tim & Sandra & family from Australia!!!!

Thanks Tim

Great job love your video's

Very cool indeed

Very interesting project . Good accurate work, proved by your balance weight having to be diametrically opposite the crank of your handle. Regards Les

Very nice as always