To those complaining about weight.... First rule of engineering is that EVERY solution is a compromise. There is no "best", only the most suitable solution for a given situation. I seriously doubt the designers have higher end carbon road bikes and the pro peloton in mind with this gearbox. But there are many other types of bike that really benefit from a sealed maintenance-free design with easy shifting. Commuter bikes, which favour robustness over shaving off a few grams, get lots of rain and grime, lots of shifts (many stationary) and not a lot of care or love. Robust, sealed gear units are a prime candidate for these types of bikes. Add in the growing popularity of electric assist (which weighs much more than this gearbox) and this makes a lot of sense.

I am very happy that finally someone had the resources and will to build this. The principle of bigger leverage works and gears are just round levers. The increased mass of the bicycle is compensated with a better chain design out of robber. If you want to improve this concept further, please feel free to consider my recumbent design that has levers of 2000 mm plus combined with pulleys. It is designed to increase significantly the torque exerted by human powered vehicles.

The epicyclic gear at the end of the intermediate shaft is super intriguing.

Thank you for posting this. I too would like to get my mitts on one for my recumbent trike. Hub gearboxes like the Rohloff are great, but they preclude the use of a Hub driven power assist, where as the Pinion would complement it. Yes you can get a 'mid-drive' motor like the Bafang, but these can give a lot of wear on the chain if you live around hills, (I live at the top of one :-( LOL). A hub motor actually improves the wear on the chain, as the torque generated by the chain is amplified by the hub directly to the wheel instead of onto the chain. I got 500 miles more on my last chain after fitting the hub drive! There is a short review of a pinion drive as fitted to an Azub trike on "Bentrider online" if it is of any interest. Apparently the change is a little stiff when new, but after a few hundred miles they loosen up a bit.

Thanks for your time in explaining the mechanism. Very informative. It's what I was looking for on the net. Love from Indonesia.

The functional combinations that refined engineering combines development with the simple pleasure of cycling.

Nice explanation Dan , and that would be a nice set up I think , no more Greasy chain and derailers ...... and a silent belt drive.

Nice ! you learn something new everyday ..thanks for the clear explanation..

Thanks for that, you safed my Presentation

Many thanks for this explenation !

I don't think in the future bikes will have gears.I like the thought put into the gearbox. sweet

The manner in which those (unseen) protruding pawls engage the various gears explains why the Pinion Gearbox is do difficult to shift under load. Riders say they have to ease off the pedals almost entirely before a shift will engage, which seems like a hassle.

Nice explanation, thank you.

I have both, like the pinion best. Gear down going up hill by just split second stop pedaling. Kinda like a harley trans too.

Thanks for making this video, very helpful

I want to order a standalone gearbox like this for an ebike build I am working on. However I can't find any sellers that actually have product on the market that I can pickup. Figured I could weld one on to the frame I'm looking at using. I really would like to have no slack in the chain.

A+ TO THOSE GERMAN PEOPLE .....THEY CREATE GOOD STAFF ....FROM MEXICO TO GERMANY LOVE YOU ALL!!!

I wonder how the weight and efficiency compares to a standard derailleur drive chain?

I wonder how the pawls will stand up to use over time.

That is a neat little piece of engineering. It would be interesting to know the input torque or horsepower specs on that unit.

Anyone know how much rotational drag this will create when freewheeling? Does it run dry or in oil, as gear oil is thick and will absorb energy. And what about the bearings, life expectancy and ease of servicing ...?

Very interesting video. Did you notice they have two lines of product. A p line and a c line. Do you happen to know the difference?

I bet you can adapt this to a go kart, a small car or motorcycle. It would need an adapter to the engine and prop shaft, but I bet it could work.

I think I figured out how the planetary gear on one side of the counter shaft works. The counter shaft is rotated by an engaged gear. The counter shaft has a gear selector shaft inside that is used to raise pawls. The counter shaft and the gear selector shafts rotate at the same speed. The shafts are connected by two planetary gears in series. The first planetary gear has a 4:1 ratio (input sun, output planet carrier, ring fixed), the second planetary gear has a 1:4 ratio (input planet carrier, output sun, ring fixed). Overall this is 1:1 ratio and doesn't seem to make sense. But if you rotate the second planetary gear's ring it will work as a phase shifter between the two shafts. This allows you to rotate the gear selector shaft relatively to the counter shaft.

Can you please assist me to buy this whole set . I really need this kind of gearbox for my project.

Wow, that's so much simpler than a hub! Simple is good, makes me want one.

Thank you!

Wonder if you have done a C1.12 "How it Works" video. Thank you for your video on P1.18 & Rohloff.

ready for twin electric motor bike conversion transmission

So if i buy one I get the shaft?

When I said it was simple I was ignoring one thing. The pawls that engage the gears are on a rotating shaft unlike those in a conventional internal gear hub where they are on the stationary axle and engage the stationary sun gears. I would love to know how those rotating pawls are controlled by the pull-pull cables attached to the frame of the bike. ??.

Is this currently available for bicycles like the THORN, KOGA, PATRIA...? How does it compare to Rohloff or Nuvinci?

Developed by Porsche-Engineers who like bicycling.... just ART....

wow, wondered how those work. I wonder why they went with helical on the last set. i suppose that's the granny gear with more torque potential. the array out different teethstrikes me as odd. are automotive gearboxes like that? i can see that the ratio has to have a whole number of teeth and toy on the same center to center.

@andrewkiyko7413: I beleive this is not exactly so. It seems to me that the way the (ingeneous!) shifter mechanism actually works is as follows: (a) The driving pinion is rotating the driven pinion. (b) The driven pinion is in turn locked to the camshaft by the appropriate pawl. (c) This pawl sticks out of the secondary shaft, hence is forced to rotate with the concentric camshaft, regardless of the planetary shifting mechanism (to which I'll get in a moment). So, per a specific gearset being engaged, the secondary shaft and it's inner concentric camshat are rotating together at the same angualr velocity. Now, how do we change gear? we must cause the inner camshaft to "phase-shift" with regard to the secondary shaft. This, If I figured it out right, is performed as follows: First let us define two planetary gearsets. Let’s call the inner set Gearset A, and the outmost set Gearset B (composing of SUN A, SUN B, RING A, RING B etc.). Now, (1) At the end of the camshaft there are two SUN gears, SUN A, which is not positively connected to the camshaft and can spins freely around it (it is and idler, carries no functional purpose except structural support for PLANTES A), and SUN B which is positively connected to the camshaft and rotates with it. (2) RINGs A and B are fixed, but RING A (the inner ring) is responsible for gear shifting and is rotating a fixed angle every shift. RING B is always stationary. (3) Now for the clever bit: The planet carrier is common to both planetry sets. It carries PLANETS A and PLANTES B, and, as long as a specific gear is engaged, is an idler, i.e., it rotates freely. (4) I order to shift gear, RING A is rotated in a fixed amount, while RING B is kept stationary. This Causes PLANETS A to rotate a small extra amount. This in turn causes the PLANET CARRIER to rotate an extra amount (5) In gearset B, this causes PLANETS B to rotate an extra amount. With RING B being fixed, this drives SUN B (and hence - the camshaft!), rotating it by an extra amount. This results in the camshat being "phase-shifted", which translates to a different pawl sticking out radially, engaging another pinion in gear.

That's fantastic, I wonder how well it actually works in operation.

Very well explained, simple to understand, but a very clever system.

Is this a RELIABLE and ROBUST gearing system like a cassette or a Rolhoff hub?

I would think there would be some mechanical resistance compared to a rear cassette

Good tutorial

But..thit type of gear are good or Not for Forest Roads, Mountain Road or Etc.

How we by this bicycle pl Give link

Why haven't i seen a pinion electronic controller/shifter similar to the sram axs system i mean both of technologies are already there.

I'm thinking if they built this thing with much narrower gears, the drag would be greatly reduced. Less surface area=less fractional surface, right?

Thanks for this video. Very good explanation. However don't really understand how the shifting mechanism works tbh. I a typical igh, shifting is done by locking the sun gear with the pawls. But in this design, wouldn't the pawls have to be rotating together with the locked gear? How does sync up this rotation and what is the actual shifting action? Basically what i'm asking is, do you have any more insight into how the shifting is achieved with the planetary gear hack in the pinion gearbox =)

and it doesn't create an electrical charge ?

"High"torque gears are better supported on the ends of the case, low torque gears on the center of the shafts due to bending loads.

Wait wait, soooo the crank shaft is not connected to the cog that turns the rear wheel???

Quando costa e dove si compra? Italy - Verona

Since the shifters wasn't shown is this system basically a 3x6 drive? Because in a 3x6 drive you don't have 18 gears you have 18 ratio combinations with some of the combinations being redundant.

The randomness of gear order is actually anything but random. It is for balance, eliminating vibration.

I loved my Sturmey Archer bicycle gears (three speeds inside the hub). Then I got a fancy new bicycle with Italian gears. Fifteen of them, if I remember correctly. I never liked them and my interest in bicycling waned thereafter.

Can someone please explain what "drag" means as it relates to gearbox systems?

Nice! Thank you. But... It almost seems a waste to use a video format to present still photos. Too bad a moving model wasn’t available.

How much it weighs, what it's gearing width, what input torque will destroy it? Oh, the last question: how much it cost?

How does the power get from the transmission to the rear hub?

Efneo GTRO thoughts? See them on eBay and Amazon for under $1000 some of them for $531.

What is written at 0:29

do you think this thing will take weight off the rear wheel and possibly improve handling?

I love single speed!

Шимано и Рохлофф поставили - дизлайки;( Пиньон самый лучший переклюк в мире Веселопедов !

I think it works like this, or that or the other.......Do you get what I'm saying here??????

Am I right to say you need a special bike frame for one of these?

Are they using the planetary cluster to achieve more ratios? Sounds like you are describing a manual gear unit.

I really don't understand about the input and output shaft being the same shaft. I reallly apreciate if you can give or guide me to a clear explanation, sir.

What happens when it gets clog up in mud...no outlets to slip through.. the substitute chain that is..

Is this Pinion system as RELIABLE as a CASSETTE gear system or the Rohloff?

if you put this on a fixed gear bike, can you pedal in reverse?

Is there a reverse? lol

Good

What is a rising pawl???

Efficiency :)

Or you could add a hub gearbox, like the Sturmey Archer, and save a load of weight and the need to re-engineer the frame...

Fascinating. It reminds me of an Enigma machine. So cunning, these Germans!

1938 Phoenix Mutaped Phoebus

18,12,9,6

I wanna see CVT bikes lol

Must be heavy as hell!

Brasil vai demorar.☹

A new idea for the germans is to make a reverse for a bicycle

Drag the weight and enjoy the loss of efficiency for cosmic maintenance issues when maintenance will be due.

No se ha entendido nada.

The problems of this architecture are weight and encumbrance. Only race bikes segment is actually demanding a high number of ratios, but at the same time this gearbox is too heavy and too big for race bikes. So in the end, it's nice ok, but has no commercial sense.

Bicycle RUSSIA - the BEST!!!

Only gripshift.. Nahhh..

Bike engineer 1: So the problem is everything that's common sense has been done to death and we are in the red. Product suggests anyone? Bike Engineer 2: Ah everything that's not common sense? Bike engineer 1: Love it lets go with that.

I don't think the images or your explanation helps. It's just weird that not one single video YT can explain what actually happens when the gears are shifted.

Verbal explanations don't really work wéll for something līke thîs.

Who the hell down-voted this? Someone at anitfa?

Sigh, ....No overlap !!! What am I gonna do with my life ?

Thing probably weighs 20 lbs.

Left is right and right is wrong. 😡

Too heavy an to much friction

ULAN BİSİKLETTE BÖYLE ŞEYLERE NE GEREK VAR? ZATEN BİSİKLET SPOR AMAÇLI.

Leave it to the Germans to take a simple, cheap effective design and overengineer it into a monstrosity.

Dude, invest in a decent microphone, sounds like you're talking through your phone

Those Germans ......... something called a Pinion ............. not very polite. Why don't you invent a new gearbox then?

*Who needs a special complicated gearbox that you need to build a custom frame around. Waste of time. A properly adjusted traditional system has worked fine for 60 years. Gimmick.*

Pretty old idea. Bit boring 😴

The pinion gear box is junk!! Can’t find parts in South America! Junk junk junk