Veridrive
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- เผยแพร่เมื่อ 16 ต.ค. 2024
- Veridrive is a new variable speed chain drive made in our small workshop,its a new flat gear box that can be used for many applications.
The five drive sprockets in this prototype expand and contract together for a seamless ratio/gear change.
An additional part of the project is to develop a cadence and heart rate control via a chest strap,you will be able to dial in a heart rate or cadence or watts the rider requires, or a combination of all three,so whatever the terrain the gearing ratio will automatically change to the riders input settings,this will be an add on part.
It can also be scaled up or scaled down and made from a variety of materials depending on the application.
Fixed to a bicycle it takes up no more room than a standard front 3 ring.
The chain always stays in line,the one above is 205mm dia X 20mm
A scaled down Veridrive can also be attached to the rear wheel if required.
We are well on the way with the next stage I will post it when its ready 21st August 2014
apart from the music - too bad the video doesn't show *how* it works. That would have been interesting to see.
Lúthien Merilin It did lol!
Gillenz Fluff Go on then genius, show us where the explanation was because all I heard was shit music.
it works in the same way as a hub brake, but instead of brake pads it has gear teeth. As the levers expand outwards, the ratio changes
And how are the levers controlled is the main thing. Automatically, hand control? what cntrols it?
it would be hand controls, doesn't seem to have the tech for auto control
I have seen a similar crank 15 or 20 years ago in german bike magazine. Same idea: the higher the torque the smaller the "chainwheel" in the front, which was also an excenter. Idea is fun, to me interesting for city bikes which maybe sometimes have to climb uphill. You still need a derailleur-like chaintension spanner.
Very impressed, bravo. Reading the comments only reinforced my hatred of the general population.
There was something like this on "the inventors" in the early 80's. It was spring loaded so it changed diameter based on the applied torque. A larger load made the diameter smaller so pedalling got easier and vice versa. Never took off. Besides, it's cool to change gears urself. I also love it when the chain falls off and I get grease all over my hands...
Bloody brilliant in its simplicity! This is the future.
Quote from wikipedia: "Baird's mechanical system reached a peak of 240-lines of resolution on BBC television broadcasts in 1936"...
It's so great to experience the quality of the video that people watched... oh... I don't know... *81 years ago* !!!
Удачно придумали-при налёте на препятствие,натяжитель просто отскочет назад без повреждений!
You can improve the design if you push the chain on the upper side instead, so that there is more space at the bottom. Itś better for the roads with leafs and dirt and sticks.
You can also cover up the whole thing with plastic, so that it does not mess with pants.
Er... What? The upper stretch of the chain is very heavily loaded under power. You can't "push" it. Only the bottom stretch can be "pushed".
A certain poignancy in seeing this and other videos like it, since the ideas contained in all are now many decades old (if you're old enough you saw earlier versions in magazines like Popular Science.) The mechanisms failed to advance beyond the curiousity stage then, and are unlikely to do so now. Most cyclists don't have the interest in efficiency, or any understanding of how variations on an old theme improve it (which many do.) It is now over 30 years since I made and began using an oval front sprocket on my bike, an idea which at that time was over 50 years old. In a city of over a million people, I am still the only such user!
That looks ridiculously heavy and like a maintenance nightmare not to mention friction and drag. Clever yes.
Where i can buy it?
I think what your saying is it's an automatic gear change before it becomes to hard to pedal .... bravo !!
Beautiful.
I don't see nothing. Could you make the video in high resolution?
so many things are force to move and in rotation, how about the efficiency?
will it work as a gyro? but how about the experience to ride with the gyro effect? it looks stiff to make a turn?
I recall in the 80s a Dutch system that worked on the same principal.
Correct; it was published in the magazine "Fiets".
It's a nice looking crank sprocket though making it bigger would decrease torque.
Making it harder to pedal. May increase speed over flat or downhill terrain.
There is a reason motors always have small pulleys sprockets or gears on them.
Here's an idea the might improve your drive. You could also put a crank and pedal on the right hand side as well. I can't claim this idea as original. I've actually seen this done quite successfully on some other bikes. Saves you having to drag your right leg along the road.
Oh yeah and kill that bloody noise.
Gribbo9999 are you kidding ? i mean, i takes the drive side crank ar 1.23 . please make good use of your eyes before making bad use of your brain.
Lmao it’s all video without explanation! Don’t pretend you understand this concept! Unless you helped design it or know the person who did shut the fuck up!
Very well done!! Outstanding solution for the challenge.... I wonder if one could apply the same tech to varying torque and speed in a smaller solution.??? Like “wind electrical generator” or multi input varying torque conditions, like “water wave electrical generator” where the conditions change from none to great torque rapidly.... just thinking out loud...
Thanks and Hi Jerry.... yeah the ideas you have mentioned would be possible if you can think it you can do it ; ) ....
So its essentially an adaptation working like a cars fan clutch that kicks on "higher" at higher rpm's and down at lower; but has variable speeds . What liquid was used intentionally silicon?
Nice idea,and looks impressive, but how long before grit or a twig is caught in between those low tolerance moving parts? I wouldnt want to be dismounting every few miles to remove crud .
The drive "wheel" is not circular so there are bumps for the chain to jump up and down between peaks and valleys, resulting in a tensioner vibrating violently. That's why you cannot get this design to commercialize.
I see how the round hub like centers and is a slotted travel slot that effectively changes the gear and/or ratio,load and amount of effort could be got from this setup..!Very cool but I am eagerly wanting to see it work in the real world?Thats messed up how you didn't show more so I could marvel at how it mimicked my Polaris CVT..
That model is nice but what happens when you stop to pedaling, centripetal forces make the diameter coming back. And, when you apply force with your foot, it is enough centripetal force to maintain the better diameter?
This would probably be dope as hell with the small selection of auto shifting rear setups, like the nuvinci hub, or whatever that setup is the Landriders use with the autoderailer. if it can handle torque well enough; might work well with a motor.
I'm assuming that that gears adjust themselves depending on the amount of torque generated. If you're climbing a steep incline, then that thing is going to stay on a lower gear because your ability to generate more "torque" is reduced and when you hit the flats or declines, then that thing will give you access to a higher gear. Right?
The general response below is so typical of the dim general public.
It’s a great idea looks great and I hope on day it gets into production. How can someone not see how this works from the video!
Finally a video with decent music and everyone's bitching about just that.
3 years passed since the video was published. So why is this not standard now if it was that good?
how long does the chain last compared to a typical setup? Seems like there would be a lot of stretching going on.
Why can't this be used on a motorcycle? Perhaps take a V Twin with direct drive and centrifugal clutch and connect this chain drive to the rear wheel? Wouldn't that simplify the gearing on a motorbike?
Not a very helpful video - gives no details but shows a repetitive action in case we don't know how to view it again.The technical idea might be good - but we can't tell if there's anything innovative here - because everything about the video production is rubbish.
Mike VanIn Go to specsavers!
It looks like you may have solved the issue of the chain coming off occasionally as well.
Great design, interested to see how the "shift" mechanism would be built in, and adjusted by the rider.
There may be some valuable application to vawt or other wind turbines. Have you looked at the Savonius? Very nice work!
you got the right idea, make it less bulky it should be a great idea. widen the gear ratio to get rid of all the gears.
could have done without that music... thank god for mute
Your poor little ears. Good thing youtube provides a mute to keep you safe. God must be looking out for you. Praise be to the lord.
David Sherburne Good one 😂😂
are you high? I simply provided feedback... too many videos have unnecessary music that ruins an otherwise perfectly produced video. Or maybe I should be a lemming like you and keep my feedback to myself?
R Graham yea, this vid doesn't really tell anything about the technology of this thing. Instead of the crappy music I'd rather hear someone explaining how it operates and hear the sound of the machinery. This does nothing to make me want to even bother to look at it if it ever comes to market.
I quite agree, the music proved most annoying and the video itself so far as the product being a 'game changer' gave little insight.
But the best idea on gear system for bikes is ether the conventional cassette or the hub gearbox. Like the Rohloff Speedhub. But this is cool.
what percentage change from one extreme to the other, doesn't look to be that great?
Hi MrTench8 this is just to prove a point that the idea works and it does......it needs to go to the next level of development taking in the consideration of gear ratios and weight of the device....this prototype is over engineered but it proves that it can be done.
As others have commented, this idea is not new and the sound track is intolerable.
I wonder whether the slight speed variation under a fixed gear [cog] ratio is noticeable. Even when the ratio is fixed, the diameter of the drive cog will be slightly increasing and decreasing as the chain enters or leaves a variable cog section at the driving point at the top.
I believe you can see this effect by the slight toggling of the tensioner when the device is operated at a fixed ratio. But some of that is probably caused by a variation in the input speed.
They did a nice job on the machining, anyway.
"Changes speed under high torque conditions" is the ONLY thing I understood in this video.
I'm curious if they checked the patent office before rolling out a million miles of CAD. I think there are about twenty versions of this over the last sixty years and still never went into production.
Very interesting and innovative! What prompted you to move the jockey wheel forward like that?
The added tension makes the gears squeeze to a smaller ratio
Well done guys. Absolutely brilliant.
Hi Keith, I would like to buy a single speed high torque driver system. Would you be able to deliver ??
Holly Mollie...just few pedals...that thing was turning fast....where i can buy it???
Y si mejor cambias el mecanismo y catalina hacia arriba, para no exponer todo al terreno y piedras?
How is it in use?
I love the concept - but I've struggled finding a good way to expand the chainring without:
a) creating an uneven thread (unpleasant pedaling and focused wear on few parts)
b) adding tension to the chain during "shifting" (or again not distributing the force/wear very good)
I'm sure the Achilles heel here is having only a very small range of adjustment. It goes from medium large sprocket to large sprocket and back again. I couldn't ride it anywhere.
a teaser video ? The chain seems to hexagon round the small planet cogs ? doesn't this change the chain tension round the revolution ? with your foot constantly accelerating & decelerating? Remember the 1980s oval chain wheel, designed to give max force when the crank was horizontal, but it was a fad was soon abandoned, some said it damaged knees. Will small planet cogs be as efficient as a normal chain set ? Spoiled for choice with 12 or more gears anyway.
show a test ride for us. whats the percentage range? if its not around 300% its not competitive
how fast have you clocked it how is it on hills
So is it safe to assume that this is the equivalent of an automatic CVT (continuous variable transmission) gear box for bicycles?
Yeah thats what it is Ahmad.........
Is it CVT? It seemed slow to go back to low gear when recommencing pedalling, which is not fun especially uphill
super technique de variateur de pédaliers bravo, à suivre, quel est le prix ?
Looks like it does something similar to having two or three chainrings but no derailleur. Heavy, complicated and pointless. Tell me I'm wrong?
Wow!! Can you beat a ratio of 1:4 from the usual 52 tooth gear along with 11 tooth gear we get in the road bike?
What is the overall ratio range that it can achieve?
how do I purchase one?? I would like to use it with a planetary rear gear set on a motorized bicycle.. send me some info if they become available
que tecnologia de engranajes es eso y para que sirve acelerar rapido???? o que
What a great great idea you got there!
Its looks that veridrive is changing the gears by how fast or slow we push the pedals.
sorry my english is rubish
Any plans available in the near future? It looks simple enough to build.
2014... it is 2020, never heard of it. Did you get anywere wtih this?
Obviously increased torque causes the five sprocket drives to move towards the center of the spindle.
Wonderful & Fantastic. Congratuletions.
Hi. Any news from this changer?
how much for that set up i need that
Very good, where can I get one of these for my cycle.
This video is 3 years old. Is there an update of this project? Next.
hi Gordon yeah there is an update on the way .....quite a surprising one .....one that gives the rider a 24% advantage over a standard cycle.......with no added weight
hi Gordon yeah there is an update on the way .....quite a surprising one .....one that gives the rider a 24% advantage over a standard cycle.......with no added weight
Cris this is a reply to freerider and Gordon you might as well read it.....
Hi Freerider sometimes if you don't follow ideas through no matter how unrealistic they may seem at the time.......there is a possibility you will not find the cherry on top of the cake.....these type of ideas are just learning curves to find new ideas .....your Sofa on top of the car roof !!!.......what's wrong with that idea......they run a trains through Canada and the USA with Sofas on the top deck great views ; ))......yeah a very large part of ideas end up in the skip..........in life there are people who talk about stuff and never do anything....then there are people who try to make new things.....just for fun......and sometimes they pick and eat the cherry ...from a mad idea ; )) .......do ya know what i mean Freerider ; ))
here you go th-cam.com/video/gP0tjkaVUbQ/w-d-xo.html
How much for one that would fit my mountain bike?
Weight? What are the available ratios?
what is it that you are demonstrating?
The one question most people will be thinking at some point is... will the chain come off the wheel? Lots of people have that difficutly :(
So where's the follow up video?
For what i see, it's some kind of cvt in the crank?
Are the teeth sectors just spring loaded, similar to a vario drive?
Hi Gustav ..….. ratchets
@@keithfirstbrook2695 does it work well?
@@gustavgnoettgen yeah its better than i thought but still needs £££ to make it into production
Looks great. Any progress?
Well its all working ok but I have run out of £££ for the moment and will have to wait until my day job makes some spare cash....
How fast does it go
i don't see the point....
the derailleur works so well and is light. Bicycles dont need the added complexity
can you make this in carbon + titanium to achieve light weight (planetary gear) and stiffness ? i want it on my bike !
i dont see why not...........
wait so u built a drive torque converter for chain
Can you ride it?
I saw this design in the Popular Science magazine about 40 years ago. Did you use a SONY AVC-3250 to make this video ?
Can you share the CAD model?
Вариатор изобрели?
Rear shifter only better option coz fdont shifter will b heavier which will make cycle slower, best option is bigger crank set n smaller rear cog n add back motor can go 70+ km/h
So how much is one for bike. ?
Why not show the cogging as the driving sector disengages and the chain falls into the teeth of the next sector? Most cyclists find this extremely annoying, don't prop their rear wheels up during use and don't like to replace chains and sprockets due to IMPACT WEAR.
Don't get. It's an advertisment for the music, or what?
Is it heavy, cleaning and maintenance looks a pita!
Es la acción de la fuerza centrifuga, muy ingenioso.
What makes it change gears?
can you turn the music off and tell us what's exactly going on ?
could have used something better than a potato to make the video.
BHALT0S Hmmm punched lasagna!
Only came to see if it made peddling up hill much easier.... Question unanswered!
That depends on what product you are trying to peddle!
bingola45
You cannot take the piss out of my Android's autocomplete.... That's like ridiculing the mentally handicapped; it's just not right!
If only the makers of the Veridrive bike could mass produce them, it would drive their cost down
Can I test this Gear pls?
I need to test pls reply
So, an automatic bike transmission?
Robert Willett pretty much a design from 1922 from Browning. As in Browning the gun smiths. John browning was a keen cyclist who designed an automatic transmission for his bicycle using expanding chairing and rear sprocket. Quite a cool design and way ahead of the times.
looks kewl
just cost more than a new bike , right
So you made an overly complex Browning Automatic Gear System ( yes the same browning that made the BAR, M2 . 50cal). Really you also should have made a variable drive rear hub too using a belt drive.
Looks like a studier version of a Cambiogear. They were a good idea, but made from really crappy materials.