Wood Gear Ratchet
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- เผยแพร่เมื่อ 16 ก.ย. 2013
- Prototype mechanism with a ratchet built in the center of a large wood gear. The parts can be reversed so the ratchet will work in either direction. Made of ½ inch and ¼ inch Baltic Birch Plywood.
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Amazing how precise and well made your stuff looks and sounds!
Wow, as an amateur clockmaker, this is EXACTLY what I have been looking for re a winding mechanism. Thanks!! Very clear.
This has to be one of the finest projects I have seen on TH-cam. There is just one problem: I'm an amateur wood worker and I now feel very amateurish!!
Many thanks,
Alan.
I'm so happy to have found your channel ,I'm learning how to make these for a wind mill design I have.
Absolutely wonderful. Im a welder by trade but I love my weekends where I spend my time with the smell of wood, building whatever my wife has asked at the time lol. I almost want to build one of these just to show it off haa haa
You always have the best teaching videos - great and practical
great prototype, this is very similar to a reversing gear, used in automatic wrist watches.
Great, this is exactly what I was looking for. Thank you for the video.
I was very confident that I wouldn’t be able to find what I was looking for due to my poor searching skills yet somehow this man from nine years ago created exactly what I was looking for. Thanks a bunch you legend.
You're so welcome!
Thanks for watching. Please subscribe!
That is what keeps this channel going.
Ron
So that's what's inside of the rear wheel on a bycicle... That explains the rateling noise when you are roling without spinning the pedals.
some bicycles use wedged rollers (aka one way bearings), but same idea, except you have rollers that wedge against the housing in one way, and don't in the other way.
but most have a ratchet system, though it is inverted, the pawls are on the inside and the ratchet on the outside.
Just about it is called a "Sprag" gear or clutch.
Excellent explanation! Thank you!
Truly great stuff, Ron. Well done.
Thanks, Ron!
Great vid.
Well done! Very clever! Thanks for the video!
I came here to see how you came up with the ratchet/one way gear. What you did works great! It's a shame you can't just make those in the gear generator program.
Really impressive gear mechanism, those springs worked out perfectly/
You sound just like Ron Swanson, and it's clear your skilled with your craft as well.
That is very similar to a bicycle freewheel. It looks great! Thanks for sharing!
Thank you for sharing.
To save having to flip the inner ratchet, once sealed, the whole cog can just be flipped; resulting in the same function.
What if the axle isn't symmetrical? What then huh?
Beautiful!
I was wondering if you cut out the various sections of the base gear by hand, or used a router with a template. VERY well done. Super craftsmanship. Would be great to see a video of the intricacies of how you made the base gear as well.
This is what I was looking for, as spring I used a safety pin, thanks for sharing!!!
A safety pin is an excellent idea!
Perfect. Congratulations!
You know I am eternally grateful for this and your one-way racheting dog clutch video... I have been working on building my own treadle style lathe using the pawl and rachet mechanism that is on the Barnes No. 4 combination machine, the same treadle powered table saw that Roy Underhill has... I hope that I can replicate this ratchet system with a heavy, glued up plywood flywheel... if I can get it built, I'll upload a video for you...
Great work!
So cool. Thanks for sharing.
Hi, Ron. That was very neat.
I see you have chosen a six tooth ratchet wheel and two pawls. This gives six clicks per revolution: the second pawl does not reduce the dead space between each click (60 deg).
If you chose a ratchet with an odd number of teeth, say seven, the pawls would click alternately giving you fourteen clicks per revolution or 26 deg of dead space between each click.
in this configuration it should be much stronger though
Thanks for your clear explanation and your beautiful technical execution. Your video will surely stand the test of time.
Thank you for your kind comment. Have a look around my channel. You will probably find other subjects of interest.
Thanks for watching. Please subscribe!
That is what keeps this channel going.
Ron
Nice mechanism! I actually had a problem with my ratchet wheel on my wooden clock. I think I will make a similar mechanism. One thing I have in mind though is to use an Acrylic front cover plate so you can see the ratchet wheel.
Thank you I have been designing a project and have been running into a dead end at one point and you just helped me get past it THANK YOU SO MUCH!!! *Bows at feet repeatedly* lol
Nice work, thanks for the video
Thanks, this helped alot for my design and technology project that im doing! you just got yourself a subscriber!
Theary and practical
With good explanation
Very nice. Thank you sir 🌻👍🙏♥
Great Video!
Nicely done.
Nice video man! It makes me relax here in Madrid when you only here bad news in TV. :)
Honestly I clicked because I thought the entire mechanism was wood (including the spring), but this is so beautiful that I'm not disappointed.
Glad you liked it. I have a number of wood projects on my channel that you would also like.
Thanks for watching.
Please subscribe.
Ron
@@RonaldWalters2010 Just did. Great stuff!
Exactly what I was looking for
Awesome explain sir..... thank you
Thanks for sharing good idea
Nice work.
Fascinating! This is how cycle pedals work, right? 🚲
Very nice design. Consider making the dowel supporting the pawl a larger diameter. It would be the first to shear off under load.
Thank you
Howdy Ronald - great video and design - thanks for making it available!!! I am working on a project that requires this type of ratchet to allow the machine to be reset...I have also watched your "One Way Ratcheting Dog Clutch" video. Noting that you posted these videos about 4 years ago, I am wondering which design has proved to be more reliable over time. Thanks, Mike
Nearly four years ago... time flies. Actually, I made both clutches for a project I was working on and then got sidetracked building organs and other stuff. So that particular project remains "in progress". The first one I made was the One Way Dog Clutch, which is more difficult to make (I think). The Wood Gear Ratchet is smoother as it does not take as much torque to operate.The springs in the One Way Dog Clutch were from ink pens. The same springs could probably be used in the Wood Gear Ratchet as well... pushing on the pawls. Thanks for watching. Please Subscribe! Ron
Thanks for the quick response Ron! Just subscribed...I am sure I'll be in touch again during my build. Thanks, Mike
Thanks much. Very informative and well explained.
Glad you enjoyed it!
Thanks for watching. Ron
Excellent workmanship. Really nice.
Thank you. That is very much appreciated!
Please subscribe! You should find other projects of interest on my channel.
Ron
impressive
Cool, but you can also turn the whole gear around to change the turning direction instead of taking it apart right?
i was thinking the same thing. i think this is very cool stuff, and it inspires the imagination!
You can if the axle is the same in both directions, in application that might not be the case tho.
+Ronald Walters thanks for your reply
I understand now, I was just wondering if you will be doing any videos of attaching springs to gear and ratchet systems thanks
MAMODMAN95 I have no plans for that at this time.
nice you could also turn the gear 180 to get the ratchet to work clock and counter clock wise ;)
Nice model sir!
Glad you like it.
Thanks for watching. Please subscribe!
That is what keeps this channel running.
Ron
nice!
Is there a specific project you are thinking of using this ratchet on?
If you rough up the contact surfaces of the ratchet and then apply some superglue (one you know to be very good) it will make a very good and strong surface. I have a similar application for it where i need two pieces of wood to slide one over another and just those two pieces wouldn't last too long, so i did the superglue trick and now they have a glass like surface to glide on. Very strong.
muito bom trabalho ron, gosto muito do seu estilo de trabalhar, muito parecido com o meu, parabens.
Como imprimio la plantilla .
Muy nueno el video
This is awesome, I love the orientation of the ratchet. What could be an application of the ratchet I'm wondering since from the looks of it, it only seems like the outer gear makes the interactions regardless of the direction. But then there's the ratchet's axle where I can see a probable input, what can take advantage of this mechanism? Many thanks
At 3:04 the application is clearly explained. A spring would be attached to the back of the mechanism. A small gear would drive the large gear to wind the spring. Then the spring would drive the axle.
Thanks for watching.
Please subscribe. That is what keeps this channel running.
Ron
if you had 5 pawls evenly spaced you could rachet to a greater accuracy.
But a great idea.
some men are trained genius. to others it comes naturally.
Thanks for posting.
very good
Rather than having the ratchets both operate to fall at the same time, since you have two ratchets, would it be useful to have one of them phased out, working half a tooth later where they will be twice as many fall positions, hence a finer selection of location that is being wound? That little extra could win a game or give a little more time to a wound clock.
Being made of wood and the pawls small, the intent is to spread the load evenly between two pawls. If I wanted (or needed) more positions of engagement I would put more teeth on the ratchet while maintaining simultaneous engagement of the two pawls. This also helps keep the mechanism balanced on the axle and it is less likely to wrack or twist. Thanks for watching.
this could be useful in my projects :D
Very nice
Dear Ronald, thank you, it is great. Is it possible to rotate this in two way? how to make it? what is necessary?
No, a ratcheting clutch only works in one direction.
If it ratcheted in both directions it would not be able to drive anything.
This can be made to ratchet in either direction (but not both directions at the same time)
I also have a video on making a dog clutch.
One-Way Ratcheting Dog Clutch
th-cam.com/video/TpQpAXu4wOg/w-d-xo.html
Thanks for watching. Please Subscribe.
That is what keeps this channel running.
Ron
THANK YOU❗️❗️❗️
You are welcome. Glad you enjoyed it.
Thanks for watching. Please subscribe!
That is what keeps this channel running.
Ron
Is there a way to have the pawls disengage to allow freewheeling in reverse? Or to modify the ratchet teeth to extend when momentum drives the shaft and retract when there is no input rotational force?
If you spun it fast enough in reverse, centrifugal force would carry the pawls away from the teeth. Playing with weighted pawls would vary how fast it would need to spin to accomplish this. Perhaps a better option would be a one-way sprag or trapped roller clutch. Google it. There are many examples on TH-cam. Also thang10146 on TH-cam and 507movements.com have many animated mechanisms.
Interesting.
thats very cool indeed
Just like the bicycle sprocket and any other similar mechanism.
idea! What if you have two of those on the same shaft so when you turn the shaft 1 way it does something and if you do it the other way something happens.
There is, just haven't worked out the details yet.
Excellent! Now I can build my torture rack!
Wow this stuff is cool.
Thank you. Please check out the rest of my channel! Ron
In older mechanical clock same mechanism is used
es ist fantastisch !!
Do you have construction details like piece sizes ans things like that about this project?
Sorry for the delayed answer. TH-cam is mixing up the messages and I missed it. No plans or sizes for this one. You just work out the ratios for your particular project
So educational video
Hi
I was just wondering how you would attach a flat mainspring to this mechanism
MAMODMAN95 One end of the spring would be attached to the large gear hub and the other end attached to the frame of the mechanism. The frame would also contain the bearing supports for the driven axle. This would work like any wind up mechanism, toy or clock.
The large paper template shown in the video is glued to plywood and the entire gear cut out by hand on a scroll saw. On this particular gear I rounded all the edges with a tiny round over bit on the router table. All of the gears in my videos are cut out on the scroll saw. For a demonstration watch my video “Cutting Wood Gear & Clock Wheel Teeth” which is linked from my channel page. I also have a number of videos related to making wood gear clocks. Enjoy and please subscribe to my channel.
Helped me a lot... how did i not remember the ratchet? mmmmm
can you imagine if Ron and Matthias lived together? Cold fusion would be sorted in like.... a fortnight.
What type of springs are those and or what would I search to find them? Great video Ron thank you.
Jackson Robinson Torsion Coil Spring made from very small gauge piano wire. I salvaged these from an old printer I scrapped out (this is why I keep a junk parts box). It does not require much of a spring to make this mechanism work. Look around on eBay or try winding some yourself.
Ronald Walters is it strong?
David English Strong enough for a wood gear mechanism.
Ronald Walters i made a wood catapult and its pretty hard to pull it back so i want to make a which and i was wondering if this would work?
David English Not knowing the scale of what we are talking about, I am at somewhat of a disadvantage. The weakness of my mechanism is the pawl support pin. I have two paws so each one takes half the load. Four pawls would take one quarter of the load. Or google "catapult ratchet" to see what others have built. Winching it is one thing... firing it another... and the wear of the ratcheting mechanism.
This is exactly what I was looking for, can you share geometry with dimensions with me please ?
Sorry, I do not have any drawings nor notes for this build. Just use my video as a guideline. Ron
@@RonaldWalters2010 okay, no problem. Thank you 😊
How small do you think you could make this mechanism?
As small as you need it to be, but different materials are needed, wood can only go so far.
HI Ronald - This is just what I was looking for....My son has a crazy idea to generate electricity from swings and I want to help him with the project. This is godsend and would just work for a small school science project. Would you mind If I talk to you about this?
+Shirantadka Rajashekhar Don't know if I can help you but go ahead and ask.
Thanks Ronald. Basically, I want to use this as my main mechanism to convert an from an oscillating swing motion, to a unidirectional rotatory motion. Since, kids might not swing at insane revs, I might have to use a step down to increase the revs - so that an electro magnet can generate electricity. I just wanted to get some of your experience in figuring out all the mechanisms needed for this project.
+Shirantadka Rajashekhar Look at: Mechanical Movements Powers And Devides
knowledgepublications.com/history/mechanical_movements_detail.htm
You might consider these movements - about half way down the page:ALTERNATE RECTILINEAR MOTION FROM A SWINGING LEVER WITH SECTOR AND RACKRECIPROCATING RECTILINEAR MOTION OF A DOUBLE RACK
Also watch my video: Making Movement 123 -Reciprocating Rack Mechanismth-cam.com/video/Cas_tOSgz8Y/w-d-xo.html
A lot of these movements look feasible in theory but they can be very tedious to get to work reliably.
Your “swing” would need solid suspension rods (not chain or rope) and the force of keeping the mechanism running is continuously trying to stop the swing or make it swing unstable. I suspect you will want something that spins a flywheel (generator) in both directions of the swinging motion.
People are constantly trying to get me to help them build or invent something. Sorry, I just do not have the time.
Good luck with your project.
Thanks Ronald. Appreciate the help
How did it work out?
why is there another quieter ratcheting noise when he spins it the other way to turn the shaft? it shouldn't be making any noise
There is no other (quieter) noise. Try watching it again. Occasionally the audio will get offset when playing a video on the internet... not usually but sometimes. Thanks for watching. Ron
This is like a beyblade launcher
why would you reverse the interior parts? just turn the whole thing over. It is symmetrical. It will ratchet either way depending on how it's installed.
It's called left hand or right hand as you find necessary for a permanent installation, like a left hand or right hand thread, a left hand or right hand glove, a left hand or right hand pistol... comprende?
Haha, yes, I know....couldn't think of the term....it was late and my brain was tired.
Your sprocket assembly appears to be SYMMETRICAL, which means you can install it either way, negating the need to reverse the internal parts. Comprende??
Ray Kent---haha! thanks for the validation ;) Ronald didn't believe me!
The point of reversing the interior components is so that you can change the position of the access cover depending on where and how the gear is installed. If you turn the whole assembly around the the access cover may get buried against the wall of the assembly. It isn't important 100% of the time but there are cases where you may want to leave the gear installed and only remove the cover to replace the springs, the pawls, or the ratcheting gear. Of course he could make both sides removable instead of having one side fixed, and then just turn the gear around without even having to consider that, but then it would be more complicated to secure the posts that the pawls are mounted on. In fact.. no it's much more complicated repair wise to not have one side fixed. It's better to have an access plate and to have that access plate... accessible.
Designing a wooden bicycle? :)
please give me dimension of inner gear and key's
The video shows you how I developed the ratchet using a gear template. The size of your ratchet would be determined by you for your project. I used no drawings other than the templates shown.
Do you sell these?
No, sorry. I am just showing you how to make your own.
@@RonaldWalters2010 thank you that helps a lot!
Do you have this ratchet gear's plan?
+Harry Huang Sorry, the plan is not available. But I show you how to draw your own in the video and you can use the gear template generator on woodgears.ca
Ronald Walters I have this generator but I don't know the parameter.
+Harry Huang I did not keep notes on this project. You can see in the video the large gear printed on paper. The squares are 1" and the gear is 9" which is too large for a single sheet of our standard paper size which is 8.5" x 11" so it ends up being printed on two sheets of paper. The ratchet was derived from a 3" diameter 12 tooth gear. With a magnifying glass you can see in upper left hand corner the large gear has 44 teeth and is standard 20 degree contact angle which is what the gear template generator starts with. The shaft is 1/2" dowel. The rest is up to your experimentation and development.
time to make a plywood mountain bike...
So that's how a bicycle can be pedaled only forward and not backwoods?
Or forwoods and not backward. :-)
Thanks for watching!
Ron
@@RonaldWalters2010
🤣🤣🤣 'course forwoods
similar to a mechanics ratchet
this’d work on a bike
Im here cuz this video in my recommendation.....
👍👍🇹🇷🇹🇷
I came here beacuse of Wintergatan
+Samuel Sanchez Well good! I'm sure you'll find something of interest... wood gears, how to cut wood gears, wood gear mechanisms, marble machines, how to build a Senior 20 Street Organ. Thanks for watching and please subscribe. Ron