I already tried this, looks like 2 is optimal amount, 3 is good too but its too hard to rotate and thing tend to jam at high rpm. I havn`t tried 4 tho I think it will be totally too much :)
and so I tried, its really really hard to rotate the crank and every bit of imperfection in cogs and gears form is multiplied by like ~256 :) so yes its kinda works but you need strong hands and good printer in order to make it work :)
Hi Alexander, great video and design! Just wanted to ask you where did you get the 64:1 gear ratio? The ratio of only one fan is 1+(57/15) = 4.8, where the number of teeth on sun gear is 15 and the number of teeth on ring gear is 57. My 3d printed version shows me the same thing. So the ratio of two planetary gearboxes should be 4.8^2 = 23.04. Or am I missing something? Just a thought, not that it matters much!
I think I just draw a line and counted amount of rotations for a single full rotation of the crank :) But at the same time I do not really remember all that well now. Thank you for your kind words :)
Pretty impressive design work. All those snap fits that actually snap AND fit but spinning freely if wanted..... Do you you're a tool in your cad programm or models once and reuse it? What cad programm?
@@estebanstrauch heeeeeey , sorry for late reply, lots of things had happened , snaps and fits were done by printing and testing when it snaps and when it rotates, then I wrote down those and applied to everything, lost the data tho, but I think it was something like 0.5mm difference between parts - free rotation, 0.3mm - parts slides one into another and you can take it apart , 0.15mm - part slides with lots of friction, large parts cannot be taken apart without damage . Or something like that. I used to work in 123D , love the app, it got discontinued sadly, but its super easy and fast to create and adjust models there and Blender form sculpting. Right now I want to learn Fusion360 , its different from everything i used before so its not going smooth :) I truly want to return to 3d printing, mk2 of this fan was a failure but i have several ideas for mk3, lets see how it goes :) time to stop procrastinating.
The idea was to make it so that everyone could print it, no extra parts to buy, no lubricate and such. There already fairly small contact bumps , print tolerances make this whole thing wobble a little but overall I find it fairly efficient comparing to other designs. Actually I started this project after I printed mechanical fan from thingiverse and was disappointed with its performance and reliability and it also required extra parts like bolts and nuts to make it work. I...don`t really want to work on this fan any more, I consider it finished, I spent like 1-2 months doing it after work every now and then , making it more and more efficient and reliable and I just want to move on , do something else :) Cheers
Wow this is a powerful fan 😁😁
64:1 ratio that's impressive.
Make a clutch system with a plastic 3D printed spring so that when you stop cranking the handle it will spin down on its own slowly!
Even you think it's nice enough. 👍
You should try and add lube to the gear box. Also, run a motor to it.
nah , that would ruin the whole point :) idea was that you print it , asseble it like lego and off it goes. Like in some sci-fi movie :)
You should totally try to put more planetary gears on there!
See how many you can get on there and how fast you can get the fan to spin!
I already tried this, looks like 2 is optimal amount, 3 is good too but its too hard to rotate and thing tend to jam at high rpm. I havn`t tried 4 tho I think it will be totally too much :)
DO IT!
and so I tried, its really really hard to rotate the crank and every bit of imperfection in cogs and gears form is multiplied by like ~256 :) so yes its kinda works but you need strong hands and good printer in order to make it work :)
Nice! You should do a video on it! sorta like an update video to this one.
ua-cam.com/video/HEVQk45z2sw/v-deo.html
here :)
Hi Alexander, great video and design! Just wanted to ask you where did you get the 64:1 gear ratio? The ratio of only one fan is 1+(57/15) = 4.8, where the number of teeth on sun gear is 15 and the number of teeth on ring gear is 57. My 3d printed version shows me the same thing. So the ratio of two planetary gearboxes should be 4.8^2 = 23.04. Or am I missing something? Just a thought, not that it matters much!
I think I just draw a line and counted amount of rotations for a single full rotation of the crank :) But at the same time I do not really remember all that well now. Thank you for your kind words :)
Did you design the model ?
70% of it yes
OK that's nice, caue i did a very similar Fan (www.thingiverse.com/thing:2070475) and as I made it I found your vid 👍
Pretty impressive design work. All those snap fits that actually snap AND fit but spinning freely if wanted..... Do you you're a tool in your cad programm or models once and reuse it? What cad programm?
@@estebanstrauch heeeeeey , sorry for late reply, lots of things had happened , snaps and fits were done by printing and testing when it snaps and when it rotates, then I wrote down those and applied to everything, lost the data tho, but I think it was something like 0.5mm difference between parts - free rotation, 0.3mm - parts slides one into another and you can take it apart , 0.15mm - part slides with lots of friction, large parts cannot be taken apart without damage . Or something like that. I used to work in 123D , love the app, it got discontinued sadly, but its super easy and fast to create and adjust models there and Blender form sculpting. Right now I want to learn Fusion360 , its different from everything i used before so its not going smooth :) I truly want to return to 3d printing, mk2 of this fan was a failure but i have several ideas for mk3, lets see how it goes :) time to stop procrastinating.
Use some metal parts. lol.
This was absolutely brilliant, thank you so much for sharing your work
Wow! Thanks! really glad you liked it :)
Dude you are very cool! You should do more of this!!
how about some grease for better spinning? and small contact bumps on the fan rotor for less friction?
The idea was to make it so that everyone could print it, no extra parts to buy, no lubricate and such. There already fairly small contact bumps , print tolerances make this whole thing wobble a little but overall I find it fairly efficient comparing to other designs. Actually I started this project after I printed mechanical fan from thingiverse and was disappointed with its performance and reliability and it also required extra parts like bolts and nuts to make it work. I...don`t really want to work on this fan any more, I consider it finished, I spent like 1-2 months doing it after work every now and then , making it more and more efficient and reliable and I just want to move on , do something else :) Cheers
Connect a vacuum to the hole and wala, you have a turbine
Tornado...