How to work out good tooth counts to come up with a desired gear ratio for multi-stage gearing. woodgears.ca/gear/ratio.html The gear generator program I used is one I wrote, for sale on my website: woodgears.ca/gear
This is so cool. Math isn't my sort of game and I really suck at this sort of math. But I love seeing math in action like this. It's absolutely inspiring. Well done Sir! :)
Very nicely done. I don't even plan on doing this myself, but the "boring teaching part" was so well done I still found it to be quite interesting. Maybe I will find a way to use this.
Very nice explanation as usual. I think I'll make a mockup like this for my kids daycare class to use to tell time and they can pick up a bit about how clocks work at the same time. Thanks!
Thanks for this!! I have a dream of building a clock (maybe modifying a regular quartz clock) that runs anticlockwise, one revolution a year. I have figured out how to build a reverse clock but figuring out the ratios has felt like too big of an effort haha. So useful :-)
i learned in these 6minutes more stuff than at school in 6 hours. Seriously... Mr Wandel you're by far the most informative teacher that i've ever had.
You know Matthias, I actually watched this whole video and was, all alone, laughing out loud the entire time. Yes, it was boring and unfathomable to me but fascinating at the same time. You are, simply put, one-of-a-kind!
Hi Matthias. I prefer watching, and learning, the "boring math stuff". For me, and ( I guess ) a lot others, the math is particularly interresting when it is put into use. Thank you for sharing your ideas in videos. Greatings from Denmark.
Great video, very useful! You have a great way of explaining concepts like this. I hope you will make more videos explaining the concepts and math behind some of the things like this, it keeps giving me the motivation to stay on the Mech Eng/Elect Eng path.
Its fun to watch this without sound and to try and work out why he does certain things. For example on the second blank page when he wrote a decimal value for root 12 I was just like "whaaa?"
Great video, thank you posting. This helps me understand much better. Suppose you put two gear setups on a bicycle. Would it take the same amount of torque to accelerate each one since they are the same hear ratio?
I honestly didn’t understand it. You just did some calculations and you didn’t explain what or why you did them. I’m a beginner so I don’t quite understand everything yet…
Think the video could have used a little more explanation on why exactly you were doing what you were doing mathematically but I eventually got! Thanks for the video!!!
I just constructed my first wooden gear train. The small wheel at one end easily turns the whole set up, but it will not turn at all when I attempt to rotate the large wheel at the other end. Is this normal, and is there anything that I could do about it?
I've been wanting to know how to do this for almost 20 years thank you! Now it's time for you to buy CNC machine or 3d printer lol. I see you already know how to use SketchUp so you should be fine. I use Mach 3 for my CNC machine, the aLibre for my cad, and I have an old makerbot.
an example: G = 3:15 ; get this to 1:something; so divide by 3 -> 1:5. 5 = 2.5 x 2; then invert this equation -> 1/5 = 1/2.5 x 1/2. There's your 2 gear ratios for a compound system.
bonjour mr matthias, pourriez vous refaire l "machine d'anticytere", pour pouvoir predire les mouvement de la lune et des astres? cela me plairais beaucoup
Do I see a clock project in your future? :D You could even use a synchronous motor if you don't want to mess about with escapements, pendulums and the like.
Hi, such clean work. I have some questions, ill start with: this Gear Generator program is the only software for the hear related matters, or there are some others too?
Very interesting video. Had a little trouble following at first, got up, washed my face and started again. Will you make a clock series or was this just a random application??
wait, but if the shafts were not aligned, how did you do it? it was then where you used your gear generator program to reduce the overall size of the teeth to make the shafts align?
There is no .3 tooth error; with the 8:~27.7 ratio for the first gear, the second gear would have to also be ~27.7:96, which equals 8:~27.7. This was used to determine the point where the two gear ratios would be the same, so he picked a value near that (8:28) and then chose the second gear ratio to make the whole thing 1:12 as he wanted (instead of ~27.7:96 = 8:~27.7, he had 28:96 = 7:24).
Possibly 'again', thank you for this. I sometimes use my kitchen cupboards as a white board to sketch Ideas while I am making a cuppa. Then I remembered this video, I can go wash all the lunatic scribblings off now.
+Roberto Folgarait There are two gear ratios, and if you wnat the result rgear ratio to be 12:1, that is 12, and if you want the two gear ratios to be roughly the same, then each should have a ratio of sqrt12:1, and when you have two of those you multiply the ratios, and (sqrt12)^2=12.
Don't worry, he's neither made it an less precise, nor actually used sqrt(12) as his gear ratios. What he's done is stated that if the gear ratios can both be around sqrt(12) (sqrt as there are two idler, conversion gears), then that would be optimal for this compound gear train. Then he's picked gear ratios around that 3.46 value. So here: (these are gear ratios, not time stamps) 8:28 --> 2:7 = 3.5 28:96 --> 7:24 = 3.428...
@1:20ish you say that you want to make the gear ratios more even. Next you draw a picture of a gear train with three gears and say the final gear ratio will be the same as before, but the last gear will spin opposite to the first gear. Can you explain this in more detail? I thought if the pinion was spinning counter clockwise then the idler gear would spin clockwise which would drive the final driven gear counter clockwise; however, you have indicated that it should spin clockwise. Did you mean to say opposite to the idler gear?
Thank you so much for this. I am considering creating my own you tube channel. If I use anything from this I will be sure to commend you and so fourth. With your permission.
