More proof the inventing the wheel isn't necessary when improving a design can be easily achieved with the abundance of information at our fingertips. THIS is what the internet SHOULD be used for. What a simple stroke of genius. Thank you sir.
I think you need a conic shape for the internal gear if you want to tighten up the tolerances on both outer discs. Also, I see a wobble in your future, but this might be a nice way to advance a shaker conveyor for mining or maybe for a crusher/compactor type machine that benefits from loosening up whatever is being processed. Of course, you can always just increase the orbit and shrink the size of the internal gear, add two more, and you've got a planetary gearbox almost made.
The input and output shafts don't (and CAN'T) remain in line with each other as it rotates. It's broken. The principle though might be sound if your internal gear has TWO different profiles, each one matches an external gear. So basically, it might work, but you are only about halfway there.
Brakes and wheels the difference between sliding and rolling friction? Bollllllllllllllll ...., uh, never mind, mate. I had never thought about it, but, of course, you're clearly correct.
I know of at least two makers of cycloidal tuners (both of whom somehow got patents granted for the basic cycloidal mechanism), so they do work. Easier to get low backlash when a little friction is necessary to hold position. I've been playing with harmonic gear tuners, but machining them on my little CNC is too time consuming to be profitable. I should make a video on them. I tried posting a link to my R&D thread on the OLF, but youtube ate it, and I don't think you can view the photos without creating an account anyway.
I wonder if these could be used to build a transmission, use clutch packs or dogs to connect it to the output shaft, use it in place of planetary gears. In a automatic transmission for example, or sliding dog's in a manual, but seem the ratios are too deep, a 1gear in a normal transmission, is 6:1 at the lowest, usually 4.25:1 or something. then 3.10:1, then a 2.50:1, as 1.25:1 a 1:1, the . 80:1 overdrive , .70:1, I doubt as low/high as a .50:1, usually in the range of .70:1-to .90:1. Having a untraditional low friction gear set in a transmission would be awesome!
Robert thank you for a great video. I want to ridgeblade style wind turbine, by putting 6 VAWT mounted horizontally along the spine of my roof. By combining the savonius VAWT from vid 1748 & the generator from vid 1869 & now this gear system from video 2052 to increase the generator speed. Could you please make a video where you combine these 3 things together. - Cheers Len
Amazing! It's a harmonic drive without the limiting factors of a harmonic drive, namely, the need for flexible material. I imagine it would be a lot easier to find suitable materials for use in extreme environments, when you don't have to concern yourself with it's elastic properties at those extremes! Amazing. Is any of this patentable? If so, you should, because the potential is massive.
@@ThinkingandTinkering I’m sorry sir, didn’t mean it that harsh. Lol English isn’t my native language. I don’t see you as someone who brags, I really appreciate what you bring to all of us and the better of humanity. Cheers sir!
Is a gear with oloids possible? I mean, I'm sure someone's already thought of it and scrapped the idea. But the question is what's in the middle? You mentioned friction and roll? Is there a tooth shape that's pretty much the middle? Can't really count a worm gear because its basically a single tooth that stretches the length of the screw. The rounded gears function similar to the geneva drive gear, and of course there's the geneva drive (the cross) But is there a gear tooth geometry that has about the same surface friction or physical action as the lantern and peg gears?
are magnetic peg-o-lanterns possible? I still don't understand how you can have brushless magnetic planet-peg-o-lanterns... That would be a mighty invention! Even far mightier than the doddy drive! hahahah!
Not trying to discredit all the hard work you're putting into your videos, but but this is not an external cycloid gear. Cycloid is a curve traced by a point on a circle as it rotates, which is why there's some math involved, although it's not too complex. What you made here is a modification of a split ring planetary gear, with a single planet and sun gear replaced by eccentric carrier.
More proof the inventing the wheel isn't necessary when improving a design can be easily achieved with the abundance of information at our fingertips.
THIS is what the internet SHOULD be used for.
What a simple stroke of genius.
Thank you sir.
Crumbs you are helping develop a better world.
trying mate
oh dear, oh dear Robert - what did elegoo do when they gave you those 3D printers!.... LOL
lol - they hav been quite useful
They should be a sponsor
Hi Robert. Thanks for your video's mate. They help with my depression and PTSD. Your enthusiasm and joy is infectious! Again, many thanks!
"To follow the path of the Cycloid" - a new way to achieve engineering enlightenment maybe?
It's Robert's New Cult 😂
lol
I was reminded of your Alphabet of Machinery series this morning. Cheers!
Excellent work!
cheers mate
Super cool🔥
I think you need a conic shape for the internal gear if you want to tighten up the tolerances on both outer discs.
Also, I see a wobble in your future, but this might be a nice way to advance a shaker conveyor for mining or maybe for a crusher/compactor type machine that benefits from loosening up whatever is being processed.
Of course, you can always just increase the orbit and shrink the size of the internal gear, add two more, and you've got a planetary gearbox almost made.
It looks like both ends turn in the same direction. This is a feature I am looking for in a design I am working on.
Very nice!
Thank you! Cheers!
quite nifty!!! :)
cheers mate
Brilliant. Simple construction. Now 2-stage it. 👍🤪
I recall these being used in a Canon printer years ago, in the paper handling mechanism.
no - you don't you just think you do lol
Love it
cheers mate
looking forward to what you're going to do with it
cheers mate
The input and output shafts don't (and CAN'T) remain in line with each other as it rotates. It's broken.
The principle though might be sound if your internal gear has TWO different profiles, each one matches an external gear.
So basically, it might work, but you are only about halfway there.
Range Rover and Discovery vehicles use this same mechanism in the winch that lifts and secures the spare wheel under the rear floor.
Brakes and wheels the difference between sliding and rolling friction? Bollllllllllllllll ...., uh, never mind, mate. I had never thought about it, but, of course, you're clearly correct.
I love it but it makes my head hurt!
lol
I had so wanted your help mentorship before my disabilities won
This is how the new mid drive from TQ (the HPR50) gets 50Nm of torque out of a package less than a kg.
wouldent DaVicy loved your vids ty & ttfn
lol - cheers mate
Tuners for stringed instruments need similar ratios. Worth a look methinks!
The slop and backlash might be an issue? Especially at the small scale. But there might be unforeseen advantages too.
certainly mate
I know of at least two makers of cycloidal tuners (both of whom somehow got patents granted for the basic cycloidal mechanism), so they do work. Easier to get low backlash when a little friction is necessary to hold position. I've been playing with harmonic gear tuners, but machining them on my little CNC is too time consuming to be profitable. I should make a video on them. I tried posting a link to my R&D thread on the OLF, but youtube ate it, and I don't think you can view the photos without creating an account anyway.
@@dekutree64 Thankyou. I will go and have a look. No need for me to spend time if the work has already been done!
I wonder if these could be used to build a transmission, use clutch packs or dogs to connect it to the output shaft, use it in place of planetary gears. In a automatic transmission for example, or sliding dog's in a manual, but seem the ratios are too deep, a 1gear in a normal transmission, is 6:1 at the lowest, usually 4.25:1 or something. then 3.10:1, then a 2.50:1, as 1.25:1 a 1:1, the . 80:1 overdrive , .70:1, I doubt as low/high as a .50:1, usually in the range of .70:1-to .90:1. Having a untraditional low friction gear set in a transmission would be awesome!
interesting mate
If I may offer, a better analogy for rolling and sliding friction might be pushing your car forwards vs pushing it sideways.
it's a good analogy too mate - not sure if it is better - but it is good for sure
@@ThinkingandTinkering well put!
Robert thank you for a great video. I want to ridgeblade style wind turbine, by putting 6 VAWT mounted horizontally along the spine of my roof.
By combining the savonius VAWT from vid 1748 & the generator from vid 1869 & now this gear system from video 2052 to increase the generator speed. Could you please make a video where you combine these 3 things together. - Cheers Len
like a cycloid harmonic hybrid, can it be back driven?
not with the slop in this version - being able to back drive is all about the backlash ratio
Would there be much benefit putting it backwards and slapping it on a turbine? Low Torque, high speed?
So I could laser cut the flat parts from steel and the pegs from round bar stock
at the risk f sounding daft could it be used with the wind wind turbine
#3!
awesome
Put marker on next time to show rotation
ok mate cheers
Amazing! It's a harmonic drive without the limiting factors of a harmonic drive, namely, the need for flexible material. I imagine it would be a lot easier to find suitable materials for use in extreme environments, when you don't have to concern yourself with it's elastic properties at those extremes! Amazing. Is any of this patentable? If so, you should, because the potential is massive.
No way you can take a patent on an idea you’ve been bragging about on internet.
I wouldn't patent it mate
bragging lol - that's a bit harsh
@@ThinkingandTinkering I’m sorry sir, didn’t mean it that harsh. Lol English isn’t my native language. I don’t see you as someone who brags, I really appreciate what you bring to all of us and the better of humanity. Cheers sir!
no worries mate - bless your heart and thanks very much - i took it in good humour
Is a gear with oloids possible?
I mean, I'm sure someone's already thought of it and scrapped the idea. But the question is what's in the middle? You mentioned friction and roll? Is there a tooth shape that's pretty much the middle?
Can't really count a worm gear because its basically a single tooth that stretches the length of the screw.
The rounded gears function similar to the geneva drive gear, and of course there's the geneva drive (the cross)
But is there a gear tooth geometry that has about the same surface friction or physical action as the lantern and peg gears?
i don't know - but i wouldn't assume it has been thought of - have a look and see if it has been tried
Is this an increase or decrease of torque?
me too!
lol
As usual your video was interesting and thought provoking and definitely time well spent but, the link is not working. 😞 Please keep up the good work!
it's working now mate
Is this a variation on an harmonic drive?
sort of
are magnetic peg-o-lanterns possible? I still don't understand how you can have brushless magnetic planet-peg-o-lanterns... That would be a mighty invention! Even far mightier than the doddy drive! hahahah!
lol - i have made one already i must post it
@@ThinkingandTinkering oh my GOD, I did not think that it was possible! hha lol! woaw!
IM EARLY...WOOHOOO
awesome!
Ah yes Leonardo da ninjaTurtle
lol
:)
cheers mate
Your link above for the STL files doesn't work. I get a 404 error.
it's working now mate
Not trying to discredit all the hard work you're putting into your videos, but but this is not an external cycloid gear.
Cycloid is a curve traced by a point on a circle as it rotates, which is why there's some math involved, although it's not too complex.
What you made here is a modification of a split ring planetary gear, with a single planet and sun gear replaced by eccentric carrier.
Robert,
Are you familiar with Ken Wheeler's work/his channel Theoria Apophasis?