Making The Reciprocating Rack & Pinion

[@general5104]

My Dad spent most if his life repairing fishing tackle & I would watch him tear down reels, make springs, install parts salvaged from old broken scrap reels, etc. This dual rack & pinion slide assembly was in the Orvis reels for the up & down even winding motion. U had seen him taking the stuff apart, cleaning and greasing it and putting it back together & watch it work just by pushing the spool up & down! But up until I watched your video with the wooden model...it never really made since in my head...& I have been a tool designer for over 40 years! Now I have another aspect to use, thanks to your teachings! THANK YOU!!!

[@kdmellor]

I'm not sure what motivates you to make these little gadgets, but I'm glad you do it. I learn something new every time I watch one of your videos. You do a great job of explaining the processes as you go through them, without wasting a lot of words, and the video footage high quality, too.

[@RonaldWalters2010]

Thank you! Glad to hear you are enjoying my videos. Please subscribe.

[@bellejardin]

For the last 5 years or so, I have been searching the internet looking for an electric rocking chaise lounge. I've found a gizmo to rock a hammock (side to side) and I've seen the rocking bed but I can't find a chaise lounge that will rock. It seems unreal that it's not out there because it would help overactive kids, people with depression and anxiety and the eldery as well. I have seen plenty of patents but no-one seems to have come up with something. I was really hoping for my 60th b'day, I'd be able to have one but I guess not. I had a fairly rare aggressive cancer that I fought and finished treatment at the end of August last year. It has a 85 to 95% chance of returning within 2 years and this has been one of the things on my bucket list. Ronald, I loved your video and the fact that you told us what didn't work as well as what did. Best of luck to you sir.

[@k8rgrl]

Nancy, if you're still with us, at 66, they exist now. I did a simple search for them on Google, and found quite a few, some indoor, some outdoors. I hope you're still with the living so you can pick one up.

[@Alainjean127]

Great piece of work Ron, but moreover very generous of you to share.

[@flixpods]

Sir...you are a true hands on engineer...it is amazing that you could design tool and build all the components by yourself and that too with such a finish...cheers

[@johnnyjimj]

Amazing... I was involved in an invention that is uncannily similar to yours, back in the late 1980s... The inventor, a friend of mine, sunk something like 100 to 200 grand in it, mostly in patent related fees (I strongly advised against it - I thought he should imply manufacture the device and sell it himself, but he wouldn't listen and ended up practically broke). But to come back to the thing, he spent lots of time at the machine shop trying a design, modifying it, coming back to it... He'd be on the road constantly ;-) Boy how things change with the evolution of technology! Now one could probably design it all on a freeware CAD and build it directly on a 3D printer...

[@cptairwolf]

I'm not sure I wanna know what you plan to use that for.

[@Pumbear]

Let's just say webcam models around the world are delighted by this invention.

[@52Ford]

Phaha... That one took me a minute to figure out.

[@gusstavv]

To make cheese? or butter?

[@macewindu4494]

window wipers in cars?

[@G5Ckxew]

hedge trimmer mechanism

[@gondolacrescent5]

I should mention I'm very favourably impressed with Ronalds work and ability to think. Anytime I'm tempted to vain pride concerning my work and capability, a visit to this part of You-Tube quickly upsets impending delusions--and for that, I'm grateful.

[@psn9086]

A very elaborate and cool demonstration of rack and pinion mechanics!

[@MK-jn9uu]

omg, your expertise is as fascinating as this mechanism

[@petermenningen338]

Ron I've used the glue with paper to hold items together in the past. I've now switched to the 3M pull free picture mounting technology to do this in my shop. It is faster, removes cleanly , and holds to metals as well as wood and other porous surfaces. I've even used it to hold a metal straight edge to a rough wood board to straighten an edge on the table saw.

[@danielaunspach6312]

Thanks for taking the time to make and share this video!

[@stop4stuff]

This is just the solution to an issue we face in a project my son and I are working on. Thank you for sharing.

[@tubalcain1]

I can already see Matthias using this in one of his AWESOME machine ideas!... Nice job Ron!

[@thecasualcitizen492]

Excellent craftsmanship. Enjoyed the video.

[@gus6rocks]

very nice job, nice hand skills. We must not let these skills die

[@mattmoreira210]

That first motor you've shown is not a bad quality motor. It is just not intended for your application.

[@wtfarg]

You mean it's made for a system without much resistance? I guess some motor need to turn at high velocity to produce a significant contribution. Using the same gear difference shown on the second motor we may actually see it work properly.

[@mattmoreira210]

Yep!

[@alerey4363]

And it's got a gear adapter to translate the axis towards the edge; you can surely dissasemble that mounting to get the original bare-metal motor (with the axis at the centre)

[@cicero2]

Very interesting, Ronald. As a retired printer the mechanism you've designed is similar to the flatbed movement of the 2 revolution Miehle press. The main difference being that the gearwheel did not have the cut-out and moved laterally and engaged geared racks offset to one another. Buffers took the strain as the heavy type bed reached its end motion. I've tried to find a drawing but no luck. Best wishes.

[@prosper6504]

thanks for sharing the idea, this is what I need for my project. God bless you.

[@MrAcgolem]

Thank you so much for making this video. I've been scratching my head trying to work out how to make a large scale levelwind for essentially a kontiki reel. Although mine is actually towed out by a large kite and skyhook rather than a kontiki. Anyway I've converted a self propelled lawn mower into a large, petrol powered reel and just needed a way to get the fishing line back on the reel evenly. I'll use your idea but gring teeth off a bike gear and tack weld lengths of the chain to the inside of a steel box. Maybe mount that on a heavy duty draw runner.

[@RonaldWalters2010]

Google the French fishing reel - "Mitchel 300 images" - look around for photos of it taken apart. It's been around a long time.

[@MrAcgolem]

Ronald Walters that is cool. Mine will be more like a bait caster reel and about 50X bigger. My kite tows 25 baited hooks on a 360lb fishing line a mile out to sea. I've built a trolly mounted reel with a 4HP briggs and Stratton motor to wind it in (usually gets 7 or 8 big fish and the occasional shark) Just need to make a levelwind. It's a common fishing method in New Zealand but outlawed in most other countries. To be honest I've enjoyed building the reel more than the fishing.

[@Afrocanuk]

...Can't understand why there're 469 thumbs-down on this video.

[@pedrosacramento]

In one word: envy. The video is awesome =)

[@imageblogger2142]

Pedro Sacramento I totally agree.

[@fer220463]

Hola. es muy bueno el sistema. tiene mucho desgaste en los dientes con un uso continuo de meses? Gracias

[@RonaldWalters2010]

Fernando Stai This would run a long, long time before any wear would show on the teeth.

[@fer220463]

Gracias. un abrazo.

[@rickardliljekvist5983]

Christopher Polheim was an swedish engineer during erarly 1700. He mad I think over 40 different motions like this in wooden modells. All from quite simple to more advanced. They was the base for a Engineering Shool in stockholm founded by the king. Before this sweden was not anything near technology or mechanic. We knew hot to make very good steel already then but that was it. But from this point with this wooden models and all the students learned mechanical motion everything started out that later became that our small country became famous for making very clever engineering and also able to manufacture them.

[@vidskitkid]

Wonderful build, explanation and demonstration, thank you!

[@caitthenerd7470]

I don't know what this is but I like it! You've earned yourself a sub!

[@CrackleLackle]

10/10 would brush teeth with that.

[@FrostMonolith]

+Edgar Pineda Finally someone who thinks not pervertedly! Damn these minds are rare these days.

[@whynotanyting]

I wonder how much energy is lost through the impacts.

[@RHBTurbochargers]

function of the mass and velocity of the moving parts

[@brennanduquette2877]

i was thinking the same thing. Given that he made it by hand though, that's pretty impressive, right? :D props to people who take the time to make videos like this.

[@s50201]

With higher tolerances, not much

[@askingstuff]

Nincadalop that depends on how much pressure you apply.

[@MrImarcus]

Force... :)

[@acoow]

One more tooth would limit the stress of impact at the end of travel.

[@jasvin49]

No dear ... At last , impact will only come on 1 tooth only however you may put as many teeths but impact will only come on 1 teeth

[@marvinbanjo]

This is the same mechanism that made the old Mitchel 300 spinning reel mechanism work . In this case the gear case moved and the gear stayed fixed and when rotating , causing the spool to go in and out from a pin in the back side of the gear case connected to the spool shaft -- meanwhile, another gear on the crank caused the spool to turn . This made for a pretty simple and very smooth retrieve mechanism which was really advanced for fishing reels over a half century ago .

[@openlink9958]

Thanks!!! I was looking for a mechanism capable of alternating the direction is going without the need for the motor to stop and change directions

[@RonaldWalters2010]

I have another more complicated mechanism - Making Movement 123 - Reciprocating Rack Mechanism kzbin.info/www/bejne/eZLWkKeFiMytbrs

[@stratmister009]

After completing my education in electronics I realized I wished I'd studied ME instead! Also, wtf is wrong with air-heads who gave this video thumbs down! This is a fantastic video. Thank you for sharing your knowledge, much appreciated. If I may suggest, you might consider follow up sequels to this showing practical examples/applications.

[@AndreasBlomBakke]

The grass isn't always greener. As an ME, i sometimes wish I chose EE.

[@cemnurlu4803]

Would it be possible to make it thicker so when it comes to a desired side you can use another motor to pull it up and come back down on another side so making it "moving" to a certain direction?

[@RonaldWalters2010]

+Cem Nurlu Sorry, I don't understand your question. This will only rotate in one direction, due to the one-tooth offset of the two racks and the resulting timing of the teeth.

[@jrzzrj]

very well done.....both narrative and building of item........

very nicely done, and thought ! Thank you mostly for sharing the glued paper trick, very very smart one ! I will use ity with cigarette paper in by job as I am a jeweller. Thanks again. Frederic

[@designsbyphilip510]

Using a windshield wiper motor you could easily use this as part of an oscillating drum sander. The roomba (sp?) wheel might have enough power on its own. Very cool.

[@gondolacrescent5]

Your windshield wiper motor idea has me wondering if you're in favour of low voltage, direct current shops and electric tools.

[@rafaelelizarraras6122]

Ése sistema es muy usado en maquinas tortilladoras, lavadoras industriales, maquinas qué fabrican vallas metálicas, limpia parabrisas etc. etc. Muy educativo el vídeo, felicidades 👌

[@NP-rh3dt]

That's pretty genius to be honest, I can see it being quite useful

[@ProfessorDantheScienceMan]

What are you going to use this for? Looks like it would work with maybe a hacksaw blade to make a pipe cutter or something. If you could get a strong enough 5v motor you could power it with one of them cell phone battery chargers. Maybe a log saw with an even stronger 20v battery and motor.

[@weejohnbb]

I love the paper and glue trick!

[@ParmMohan-us6rn]

What the advantage and disadvantage to using this method versus a crank and arm like on a train?

[@RonaldWalters2010]

Where a designer can use it to accomplish a particular task such as when it is used in the French fishing reel, The Mitchel 300 (Google it for photos). In that application it is compact and is the mechanism causing the line to sweep back and forth as the spool turns. Another application is a relatively high-pressure grease gun, where it is again compact and transmits a large amount of torque. This video demonstrates their grease gun. kzbin.info/www/bejne/fXqamqRvg71obNU A crankshaft and connecting rod probably would not work as efficiently and would require more space.

[@ParmMohan-us6rn]

Ronald Walters Cool, thanks! I see that now. Awesome!

[@TwistedFireX]

Any ideas for what applications this mechanism could be used for?

[@RonaldWalters2010]

If you read the comments you would see things like a fishing reel and grease gun mentioned. Thanks for watching.

[@steverose2405]

Nice mechanism. It will also convert linear to rotary motion. I have an application in which I need to rotate a load 180 degrees when I push it across a table. When I pull it back, I need the load to rotate back to the original orientation. Because I am not concerned with the gear always rotating in the same direction, I could use just one gear rack and a full gear (no missing teeth).

[@RonaldWalters2010]

The rack in this configuration will not drive the pinion because there is nothing to cause the pinion to switch over to the opposite rack. You might want to check out my video on Movement 123 where the rack does convert linear to rotary movement. Maybe you just want to stick with a simple rack & pinion.

[@abhijitrashinkar]

Thank you to share a very nice piece of engineering. cheers...

[@Starlight012]

Hi, I like your design. Was wondering if you could add some kind of cushion into the design so that as the pinion teeth transfer from one rack to the other it wouldn't make too much noise. Make steal some ideas from pnuematic/fluid design. cheers

[@RonaldWalters2010]

LEN HENG If springs or cushions were used to decelerate the impact, they would probably also be strong enough to recoil (accelerate) the axle in the opposite direction before the pinion had time to transition to the opposite rack, which would lock it up. The noise at each end of the travel (impact) is primarily the pinion gear axle shaft hitting the end of the slot and not the gear teeth engaging. The teeth actually engage quite smoothly as the direction of travel has already stopped a fraction of a second before the pinion shifts from one rack to the other. A certain amount of dwell is required at each end of travel to allow the pinion time to switch to the opposite rack. If you simply slow this mechanism down, there is no discernible impact or clicking noise. But then, if it were totally quiet and exhibited no recoil, it would not be as interesting to watch. :-)

[@Starlight012]

Ronald Walters if that's the case can't we extend the length of the slot because t there's is no need for the gear axle shaft to be hitting the end of the slot. As the teeth of the pinion latches onto the rack teeth it will ride itself to the other end. NO cushion is required. I also notice there's quite a bit of play on the width of the slot. Would not the tight fitting of the slot and the gear axle shaft helps to reduce the backlash and noise. maybe move the two rect block at the back a little closer to make the horizontal motion tighter. Just wanted to improve things that's all. Your bansaw skill is amazing btw.

[@RonaldWalters2010]

LEN HENG No. Hitting the end of the slot is key to the mechanism working. The length (or end) of the slot is what "times the gear" to the rack. Lengthen the slot and the gears will no longer mesh when switching from one rack to the other. Just slow it down and it runs smooth and easy. Build one... you will find out. Wood gear mechanisms cannot have a tight fit. The wood moves with atmospheric changes and these need to be built loose enough to accommodate those changes. A great learning tool for building wood gear mechanisms would be building Clayton Boyer's wood gear clock "Simplicity". I have several videos on this clock. You can Google this clock.

[@claytonbonser7629]

This is a version of the gears that make the agitator in a washing machine reciprocate. The first motor you tried is called a synchronous motor. It is primarily designed to have a low torque extremely stable speed. Like in clocks and timers etc.

[@slothywun]

Very nice Ron!

[@chaitanyavedak2412]

Great Explanation and Prototype.. Can be effectively used for a Scroll Saw..

[@henrywong5782]

how is the efficiency of this mechanism? comparing to the conventional ram system and crank-link mechanism?

[@RonaldWalters2010]

greenland white Not really a function of being efficient. Invented a long time ago, it works. It would probably run at relatively slow speeds, and provided a solution for conversion of rotary to linear reciprocating motion in a compact area for mechanical mechanisms, such as weaving machines, cash registers, adding machines or similar purely mechanism mechanisms.

[@rich1051414]

Hmm, perhaps its a failure of my visualization, but it seems to me it could do with one additional tooth to reduce the slamming when transitioning to the other rack. Unless the slamming is intentional feedback that is.

[@RonaldWalters2010]

+Richard Smith As mentioned in the video and several times in the comments, it is the pinion axle arriving at the end of the slot which gives pause for the teeth to switch to the opposite rack. The teeth operate very smoothly (no slamming, no extra teeth required). If this were turning very slowly you would not hear a thing... but I did not have a slower motor available.

[@Аноним12Синоним]

Молодец мужик. Тарелку от CD-ROM а изобрёл деревянную. Как же мы все раньше жили?

[@theone-so9br]

I build by trial and error as well. Have you tried extending the length of travel which would allow you to add another tooth or two to each rack and the sprocket. That should eliminate the backlash caused by the free spin before engaging the opposing rack. Just my two cents, but I did like what you've done. Very well thought out. Thanks for sharing.

[@msgcheckout]

Can this mechanism work in reverse, i.e. if the reciprocating piece was made to move side to side and the wheel was in a fixed position and can this make the wheel turn in one direction whilst the rack moved up and down or side to side with no backlash or minimum loss of rack movement, the idae is to convert a reciprocating device to convert to a turning device in one direction only with no loss of torque.

[@RonaldWalters2010]

samdomding Watch the other short video "Reciprocating Rack & Pinion" kzbin.info/www/bejne/iZSlZ4qaaddsgMU and see if that answers your question.

[@torasueknisely8239]

THIS MECHANISM IS IN THE FRENCH REEL CALLED MITCHELL 300. I HAVE 2 BOXES OF THESE. THE ACTUAL DEVISE IS PATENTED IN 1898. IF THIS IS SAID TO BE 'UNIQUE OR PROTOTYPE' I WILL SEND YOU THE PICTURES OF THE INTERNALS. THE MOTION IS ON A-L-L REELS TODAY OF THE SPINNING-TYPE. -P- 4258065209

[@RonaldWalters2010]

tora sue knisely The prototype referred to in my description was my prototype (or the first version shown in my video). When building something like this without plans or dimensions you often go through several prototypes before coming up with a working model. I know this is a very old mechanism. Interesting to know about the use in fishing reels. I googled "Mitchell 300" and saw some of the internal pieces.

[@vicentejoseramos7803]

Very near to the "magic lever" used by SEIKO for autowind in his watches. Nice.

[@gagemiree6455]

This is awesome. I created a oscillating movement with three geare and motor but this is cool.

[@p.m.justice3502]

Thank you for sharing your knowledge and skills so that others like myself can learn and incorporate the information into such things as automata art!

[@Goofayball]

I can’t find very many non cnc woodworking videos of rack and pinion making. What is the math? What are the main variables to consider?

[@RonaldWalters2010]

You can go to woodgears.ca and in the lower left corner of the web page you will find a free gear template generator. There are directions on how to use it and how to generate a rack template as well. Obviously the teeth need to be the same on the pinion and the rack. Then you can make it whatever size you like. Watching my entire video and paying attention to the text in the video will give you what you need to create your own mechanism. Thanks for watching. Please subscribe. Ron

[@redtails]

great work and explanation

[@silaskuemmerle2505]

I needed a scrollsaw, this makes the design much easier, and saves me $200

[@hubbabubba5923]

Okay so... I got me a template for the gear I need now tell unto me.... How did you get the matching teeth on the STRAIGHT edges?

[@maxdecphoenix]

good stuff as usual mr walters.

[@malikjunaid1]

What could be the possible uses of this assembly??

[@RonaldWalters2010]

If you did not have room for a crankshaft, connecting rod and crosshead or if you needed to move something repeatedly from side to side like in a weaving loop. Usually the pinion is stationary and the double rack section moves back and forth and would be connect at one end or at both ends with a connection rod. In the case of my model a connecting rod could be attached to the pinion axle. Either way, the mechanism delivers straight-line push and pull. Exact mechanical timing of the strokes with a stationary pinion could be achieved with gearing driving the pinion instead of a motor (or with a variable speed motor).

[@FatFred2U]

This would be perfect for a coil winder to ensure the wire is distributed evenly. One motor and some gearing to drive the bobbin and the pinion. It would need a step down to the pinion though (bobbin width/ wire diameter).

[@SirGregory]

It's a bit over five years since this video was created, and as I was watching I was thinking how 3D printing has made prototypes so much easier. But the romance of working with wood is special.

[@RonaldWalters2010]

Ahhh… an Aussie. I have lived and worked in Australia (dating back to 1973) and have many Australian friends. Thanks for watching… and for your comments. Please subscribe! Ron

[@mevlogs194]

can ang engine run like that? use double each side up and down and attach the crackshaft at the receprocating gear

[@robaxa1]

If this is used in reverse to convert oscillating motion into rotation with a flywheel, would it be more efficient than a crankshaft? I think the efficiency conversion of linear stroke to rotational power of a crank and shaft is sinusoidal, with the maximum being when the crank is perpendicular to the oscillation. With this rack assembly reversed , the conversion of oscillation to torque is virtually constant, at the maximum, except momentarily, when the gear disengages and the motion reverses. The only losses would be due to the inertia of the piston, crank and rack assemblies when they reverse but this can be reduced by strong springs at the ends of the rack, which will make contact with a stop when it reverses. I'm not sure of the maths involved. Any engineer's opinion on this?

[@RonaldWalters2010]

As stated several times, This mechanism converts rotary into reciprocating motion. It will not convert reciprocating motion into rotary motion. I have another video Making Movement 123 - Reciprocating Rack Mechanism which you may be interested in kzbin.info/www/bejne/eZLWkKeFiMytbrs this mechanism does convert reciprocating motion into rotary motion.

[@chuxia7542]

unbelivable,amazing,i think it is very good.

[@Arithryka]

seeing it "clunk-clunk-clunk" at the end brought me joy

[@andreastsappas1227]

Dear Ronald is there a chance that you can share the plans of the gear?

[@RonaldWalters2010]

+andreas tsappas Sorry, as I have said several times in the comments section, drawings are not available. You can develop your own plans using a gear template generator and by following what I did as a guide. Thank you for watching!

[@Notlaw47]

Looks like a real challenge for a novice such as myself. I do wonder that if, instead of a "motor" drive, a chain weight (as in a grandfather clock) could be used for power? Could it also be used to swing a pendulum? Thank you for the video and common (words) instructions and images slow enough to understand.

[@RonaldWalters2010]

Notlaw47 You could use a weight but the drum arrangement could be complicated to keep the gear from binding and it would not run very long on a single winding. Winding itself could be difficult. I built this using salvaged items I had available. You could consider a 12 volt DC gear motor turning 25 or 30 RPM which are relatively inexpensive and available on eBay. It would run slower and would not bang back and forth quite so hard. Power it with a small 12 volt DC power supply which you may already have from an old appliance. Thank you for watching.

[@projectitis]

Interesting. The change in direction is quite harsh (like a triangle wave). I think this could be improved with an oval gear and a curved track that would slow the horizontal movement before starting back in the opposite direction (like a sine wave)?

[@ドーちゃん-d5g]

Thanks for the idea!

[@RonaldWalters2010]

Thanks for watching. Please subscribe! That is what keeps this channel going. Ron

[@ドーちゃん-d5g]

@@RonaldWalters2010 of course sir

[@MattyH73]

Quite Amazing at what you do

[@LectronCircuits]

Very good. Now if you made one that was 20' long, that would be totally awesome!

[@aghashire]

Very Nice design!, Just to say, if the wheel engaged with the starting teeths of one side without any gap, there would be no pounding sound, which is caused by the axle hitting the end of the sliding slit!

[@RonaldWalters2010]

agha shire It certainly is possible to play with the timing of the gears so there is no play and the axle does not engage the end of the slot. As I have posted before their mechanism is used in the French fishing reel - The Mitchel 300 - Google it.

[@maxfactormaxfactor7539]

Отличная работа! только где это может быть использовано?!

[@RonaldWalters2010]

Applications tend to be relatively low torque such as used in the French fishing reel - The Mitchel 300 - Google it. But then there is a relatively high pressure grease gun which uses this mechanism. This video demonstrates their grease gun. kzbin.info/www/bejne/fXqamqRvg71obNU Thanks for watching!

[@_earthwindfire]

Is there a more simplified way for what we have at home ish?

[@SamLamingMusic]

Do you have plans for this? Fantastic!

[@RonaldWalters2010]

Sorry, no plans. You would go about making one for yourself as I have done. Thanks for watching!

[@nickbrannon3251]

How does this compare to the traditional method of connecting a point on the perimeter of a rotating circle to a slot that allows one dimensional travel?

[@RonaldWalters2010]

As different as comparing steam expansion to internal combustion but similar in that they both run back and forth in a track.

[@turevus]

This is very inspiring and as Mr Spock would say; "fascinating" !

[@GnuReligion]

Like it! Guess my concern would be that only one tooth grips the straight teeth at the extremes, if used for high load. Maybe a Scotch Yoke? ... but that will create sinusoidal motion.

[@TenDegrees]

Saltwater Reef Aquarium Hobbyists, myself having been one for a number of years, have long searched / invented / fabricated creative ways to create "random" water flow within their aquariums. All sorts of contraptions are coming to market to ATTEMPT to mimic the random water currents found on our natural coral reefs. I could see a longer, water-resistant version of this installed so that it runs the length of the back of an aquarium with a powerhead/pump attached.

[@KnowArt]

Cool, but I would guess this system will be too wear intensive, on especially that first tooth, to really put into practice.

[@RonaldWalters2010]

You should read the comments which address this point 30 or more time since I posted the video. It's been used for well over 100 years. Thanks for watching!

[@KnowArt]

I think the saying "anything on the second page doesn't exist" counts here. Haha. But hey, cool to know it has actually been used!

[@tsukinightroad9199]

hi! Very nice video. I want to ask about if I can use this to pull up 200 Kg. If I have a platform and in both side I paste this idea, do you think I can pull up 200 kg or 2000 Newton?

[@RonaldWalters2010]

This one wouldn't... it is just a model. All depends on the design. Scan down through the comments until you find a link leading to one of these being used for a high pressure grease gun. Still, I think 200 Kg (440 Lbs) is asking a lot.

[@shadowman1754]

What would you use this for?

[@RonaldWalters2010]

Applications tend to be relatively low torque such as used in the French fishing reel - The Mitchel 300 - Google it. But then there is a relatively high pressure grease gun which uses this mechanism. This video demonstrates their grease gun. kzbin.info/www/bejne/fXqamqRvg71obNU

[@shadowman1754]

+Ronald Walters thank you it was very cool

[@GhassanSaffarini]

Even you can use it in the Hatching Machines..

[@DisKorruptd]

well, a mechanical arm which should have a limited range of motion could use something like this, such as to move objects from a lower conveyor belt to a higher one, or of course, scooping something to move it onto a belt.

[@brianmi40]

Love the design thinking, seems to me you would want to optimize the teeth size and spacing so that teeth on the wheel barely disengage at the end of the run and as immediately as possible engage the other side. Having a larger gap would seem to exacerbate a limitation inherent in this design: drag against the motor propelling the gear will mean that the gear will want to turn faster when it disengages at the end of the run (now under no load); that will mean the first tooth will impact on the other side with quite a bit of force, and the faster it gets rotating due to the wider gap without teeth will only serve to increase this impact blow. If you're moving much of any weight in real-world application of this design, I would think you'll be seriously limited in rotation speed (and therefore linear motion speed) due to the load on that first tooth "crashing" into the end tooth of the linear piece... I'm fairly certain that even a hardened steel tooth would not hold up to much linear weight being moved back and forth at much speed without cracking off one or the other of those first teeth due to the stress of instantly bringing the linear weight back to full speed in the opposite direction... If you search for the video here called "Mechanical Principles (1930) by Ralph Steiner [4min selection]", you'll see a lot of alternatives to do this motion conversion starting at about the 2 minute mark, which aren't prey to this limitation. It's noteworthy you'll see "your" design at 3:47 in the video! I ran across your video investigating methods of doing this rotary to linear oscillating motion for an invention I have in mind, but am so far leaning toward the gearing used at 3:22 though somewhat concerned about the force necessary on the oblong gear to deliver about 20-30 lbs. or pressure in the oscillation. I'd like to power my device via either an electric drill, or potentially a battery powered drill.

[@RonaldWalters2010]

It is not my design. It is my hand cut wood gear model of a design that has been around for over 100 years. Browse through the long list of comments and you will see this "thing" about crashing gears is a non issue. The noise is the axle coming to the end of the slot... and the change of momentum is at the end of the slot... the gear teeth operate very smoothly. There are examples given of this type gear being used in anything from a fishing reel to a very high pressure grease gun... both operate smoothly and without issue. Thanks for watching.

[@brianmi40]

We're not sync'ing up well, but that's OK. Clearly I knew it was not "your design" if I sent you a video about this from the 1930's. And I stand by my statement, regardless of what "youtube commenters think". Sure, you want to wiggle some plywood with a wooden gear at low RPMs, rock on, you'll have no problems. But for anything higher speed, with a higher weight (e.g. steel) linear piece being oscillated, say, once a second, the gears will either break, or if heavy duty enough, experience significant wear over time. That's clearly why this design isn't use in industrial machinery to change to linear motion, but instead, non-impact methods, such as shown in the video provided are used. Have a good day.

[@sedge6591]

Maybe this vid is too elementary for you. I'm watching these because I know nothing of gear mechanisms; you on the other hand seem to know a fair amount. If the vid incorporated all your adjustments, I for one would have to watch a different vid because it would be too complex at this point. This is a great video to learn basic mechanical movement types, short and to the point.

[@davidgouin8420]

Ron that is slick as cat shit on a humid day! Great Stuff!!!

[@tomthompson7400]

do you by chance have a pdf for the gears

[@RonaldWalters2010]

I no longer have the actual gear design data available. The racks and pinion each have 7 teeth. The racks are offset by one tooth. Approximate dimensions are… rack teeth center to center are 3-11/16” long, pinion root diameter 3-3/4”, pinion outside diameter 4-3/8” slot ½” wide x 6-1/16” long (the slot length needs to be fine tuned for correct operation of the mechanism). Suggest you play around with the gear design using something like the gear template generator on woodgears.ca until you are happy with the results. The gear template generator has detailed instructions including how to draw a rack. The actual layout of this mechanism is a function of playing with paper patterns, glue and tape. Refer to the video for orientation and remember it only works for pinion rotation in one direction. Have fun. Thanks for watching. Please subscribe! Ron

[@tomthompson7400]

@@RonaldWalters2010hi , many thanks for the reply , i shall go and start cutting up foam board .

[@TheMrkylester101]

Any idea if this would work for a diy scrolls aw

[@RonaldWalters2010]

TheMrkylester101 I think there are many better options such as crankshaft and connecting rod as most all scroll saws are made.

[@carmelpule6954]

Unfortunately, in this system there is a lot of backlash and if the system had to move, a tooth could be crushed. unless a locking device is integrated like a ball and spring locator. I think I shall try to design one without a backlash before the teeth engage. Congratulations nice idea,

[@RonaldWalters2010]

+Carmel Pule' It certainly can be timed "perfectly" just like the "Mitchell 300" fishing reel (which requires no locking device) especially if it is drawn in CAD. I don't use CAD so this was built using the trial and error process. Thanks for watching!

[@ebenezerservice9586]

your idea is nice! I like it.

[@Sonnguyenhoang]

How to create simulation this one in Iventor bro.??? which option i must chose ???

[@RonaldWalters2010]

+Son nguyen hoang Sorry, I can not answer that.

[@Sonnguyenhoang]

i saw the small video at 0:06. Did u make it??

[@RonaldWalters2010]

+Son nguyen hoang No, I did not make it. It was an animated *.gif image I found it on the internet..

[@Sonnguyenhoang]

oh. tks u. :((((((

[@RonaldWalters2010]

+Son nguyen hoang Very nice... looks good! Thanks for watching and please subscribe. Ron

[@Pan_Bocian]

what it is name or model of this lathe witch you used, and where I can buy it?

[@RonaldWalters2010]

Google Sherline Lathe made in USA

[@RustyGunn7]

Cool. Neat project. I enjoyed it. Thanks for sharing.

[@bensaccountc]

01:30 something not right with my brain

[@DxBlack]

That's the reason why I even searched for this: Turn a blender into an, uh, _adult implement..._

[@jjenson2006]

You could make up two spring plates. One on each end that will cushion the impact when transitioning and quite the clicking noise.

[@RonaldWalters2010]

jjenson2006 If the spring(s) were strong enough to cushion (decelerate) the impact, they would probably also be strong enough to recoil (accelerate) the axle in the opposite direction before the pinion had time to transition to the opposite rack, which would lock it up. A certain amount of dwell is required at each end of travel to allow the pinion time to switch to the opposite rack. If you just slow this down, there is no discernible impact or clicking noise.

[@rasmillion]

Very cool. Where did you get the dimensions (number of teeth, etc)?

[@RonaldWalters2010]

Ras experimentation (prototyping)

[@mcanetsola]

Do you share 2D digital files we will love to print in 3d printer? Thanks for sharing such amazing gear system

[@RonaldWalters2010]

Sorry, no plans are available. You could draw this yourself in CAD for your printer. Thank you for watching!

[@177jam]

www.thingiverse.com/thing:340557

[@Bearthedancingman]

Can you show the rack moving and driving the pinion?

[@RonaldWalters2010]

***** No. This mechanism will not work that way. The rack cannot continuously drive the pinion. I do however have a video showing the pinion held stationary and the rack reciprocating. kzbin.info/www/bejne/iZSlZ4qaaddsgMU And then there is my newest video of the type: Making Movement 123 - Reciprocating Rack Mechanism - and this mechanism will work either way kzbin.info/www/bejne/eZLWkKeFiMytbrs Thanks for watching. Please Subscribe.

[@Bearthedancingman]

Ronald Walters Thank you for explaining that. Subscribed!

[@오세진-d6d]

Can you tell me the name of milling machine you used?

[@RonaldWalters2010]

I used a small lathe made by Sherline. Go to Sherline.com

[@오세진-d6d]

Ronald Walters Thank you so much:)

[@geevee1969]

Very well made Video!

[@MultiDeivas]

Would be interesting to create a table desk drawer from this design.