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I guess you must be asked this many times, but .... I'd love to build one of those for myself. It wouldn't go anywhere, it'd just be for me to enjoy. I was wondering if you would perhaps sell the cad/stl files to me please? They'd go no further.

I have worked on a very old Simson moped engine which used that type of gearbox. I think a few other East German manufacturers also used that design

Wonderfully showed, and explained

To me it seems a weak design, based on the rocker shaft diameter..

This looks great! Awesome job!

Thank you for posting this video, any chance you did or can upload a video of your pressure test rig you have there? How is it made, how does it connect and what pressures youre using? It would be a great help to alot of us. Thank you in advance

Cool cutaway video man. Neat seeing you able to engage the reverse and forward clutch and getting the 2ndary pulley to switch directions

Just curiouse the 18650’s have like some kind of shutoff so if there is to much drain or short the battery shuts down like a fuse ? & thats diectly in the middle ? Thats y u stay away from center? Have wanted to build my own packs with spoting but have just ended up useing packs pre built & not running the proper voltage so end up loosing cells & replacing but never doing a nice job like this just taping the strips on the battery’s i know its not rite id like to learn the proper way👍

Question‼️ If I understood the lecture properly, the pressure in the Pressure Differential Switch will be different under high loads like panic breaking. Will it cause the switch to close? Did I understand that correctly? How does the computer manage such situations?

That's amazing! Great job explaining and also converting these drawings into a working gearbox. The only thing I'd love to see is this turned into a full plastic transmission and coupled with an electric motor to really see this in action.

*That* is exactly what patents are for. You teach the world how to make something cool, you let regular people build it for themselves for free, and in return you have the right to explore commercially for 20 years.

i want the stl for that case so I can put it on my bicycle. I got way to many Kwaka box parts lying round.

well explained... the most credential thing at the end, how the loaded levers can be pulled out of the gear - still thinking about, if that really wouldn´t be possible to do with a classic gearbox setup...

Oh my God... you are so good man. I got hooked after watching your brake master cylinder and I just had to get more of you. I will binge watch all your videos and then repeat. Thank you.

Unlike Honda are you willing to share the 3d files?

Thanks for the video

What about a simple cvt setup

Glorified Vespa/Lambretta Scooter gearbox !!

So, the whole shift mechanism works similar to a pin lock cylinder. Very interested. Cam rod is the key, moving pins that are either engaged or not transferring motion

Super neat. It has an old school beautiful analog mechanical elegance to it. You did a great job explaining it and building it with a 3d printer. If they have issues building them reliably with precision CNC metal parts the fact that you can get it to work just by looking at patent drawings with 3d prints is a testament to your skills and determination.

Super impressed by your ability to get all these 3D printed parts actually working and sliding together without binding up, that must have taken a huge number of iterations! Really small contact area between those levers and the tabs on the gears themselves. I wonder if the countershaft gears had a tendency to deform into an elliptical shape under larger torques. I’d imagine there were some very bizarre failures and asymmetric wear patterns on the gear faces, although might not have had time to develop with such a short service life.

Excellent work

simson s51 Gearbox check it out too😀

I was live watching practices when everybody noticed how strange and "seamless" that gearbox sounded. Even some people started analyzing audio and all that stuff, and it was not too long before everyone realized it was a seamless gearbox.

This is actually, not new mechanism. Similar mechanics used in some old bicycle internal gear hubs, but on planetary gears. Some simplified, but the idea is the same. Sturmey Archer S5 and S7, or SRAM S5 and S7 hub uses same principle. There is two cams, driven by wire. Two coaxial pushrods, and engagement DOG is locking the Sun gear and release other Sun gear. Shimano internal gear hubs uses rotating "fork"-like cam, which locks two DOGs, which locks the sun gear. But, I've seen almost the same mechanism in Rochloff 500 hub but a bit simplified. And!!! The shaft is stationary, so, it means, is stationary part is axle. Tommy - please have a look on some bicycle gear hubs schemes and videos. You will notice, that the idea is a bit the same ))))) Honda, probably, took some ideas from Sturmey Archer and Rochloff hubs, but made it more interesting ))))))))))))) Cheers! 😀😀

my dodge ram master cyl right now has a coule of bright spots on the bore ....what could have caused that? my brakes are getting hot and I wonder if the pistons are sticking in the bore? thank you

What is the patent num

Anyone have the Patent # on hand?

Can you please send me the technical drawings?

it's probably a bit much to ask but is it possible for you to provide the 3D files? i'm fascinated by the gearbox and would love to build it myself!

does anybody have a link to those patents?

Video sir and very well done,also lovely gamersnexus mat

So how long did this take? This certainly isn't a weekend project...

That little design enhancement with the "yellow ring" to avoid partial engagement is *chef's kiss* - my hat's off to Honda. I like how the design doesn't constrain the number of gears. It's also more compact because you don't need space to move gears sideways. I hear they need to "replace pieces" after every race, but the design looks pretty robust. Nothing looks particularly susceptible to wear. You say it's pretty finicky... do you think it's just clearances falling out of spec? I'd hope it wouldn't be an obstacle to eventually mass producing it in 10-15 years for the average bloke on a CBR.

Not only is this a great job of understanding the patent, another killer job printing it, but it's a terrific explanation of what's going on. Thanks. What did you use for the CAD? I'm an OpenSCAD guy myself. I have a Prusa MK3 and a MK4. I've been riding for about 35 years.

It is very interesting for sure. However, it is overly complex not to mention fragile is certain areas. A much cleaner solution would be to use a hollow shaft nested in a hollow shaft of a larger diameter and use ball bearings for the sequencing of various gears. In essence using the hollow shafts as bearing raceways to transfer power.

Better do video on Pinion bicycle gearbox. 2 steps ahead of this. Patented in 2007 or 2009. BTW I am coming up with meshed geared IVT real soon.

I appreciate the effort it took to assemble a bunch of patent drawings into a working model. There's a lot of things being re-explained multiple times but it's a good presentation nonetheless.

Amazing mind. Could you please answer my question? I know it is seamless, but since the engagement mech is at an angle, does it mean that there is a small second of time that the gearbox is engaging 2 gears, and that small second it becomes 1:1 ratio?

This is really cool! Thank you for taking the time to not only reverse-engineer the gearbox, but sharing with us as well. It sort of reminds me of a selectable (and more fancy/complicated) version of a two speed RC gearbox. The selectors and having the lower gear keep driving until a higher gear is selected work very similar to this. In RCs the selection happens due to centrifugal force based on input shaft speed, the selectors for 2nd are weighted and spring tension is adjusted until they are pushed out (and the shift happens) at an appropriate RPM.

Thanks for the effort! Great reverse engineering!

Hats off to you man for making a 3d model from patents only and explaining so easily❤

Dig the GN mod mat! Pretty amazing you got all of that from just patent filings...

This is super interesting - I've been curious about it for years. I'm still not clear on if it's possible for the levers/pawls to properly disengage if you upshift while engine braking, or downshift while accelerating.

very good

Like all good Transmission designs over the last 50 years this was invented by Weismann and stole by the Motogp manufacturers. Unfortunately that's happened countless times to Weismann over the years. They invented The transmission for the Ford GT (2003) which was then stolen and back engineered by Recardo into the infamous 1000+hp capable factory transmissions that we saw on the second gen GT. Same thing happened with the McLaren F1. Weisman was commissioned by Mclaren to design the F1's gearbox. They Designed and built a few prototypes which were installed in Prototype F1's, then ties were cut from Mclaren's side and the design was stolen and made by an off-brand manufacturer for pennies. The Design discussed in this video is called Weismann's Quickshift transmissions developed in the very early 1990's. I believe this design was used on the Mclaren F1 LM race cars.

so... it's essentially a common bike sprocket (multiple), but with an internal mechanism to individually control the 'sprocket' pawls.

This is amazing work man

Interestingly enough, it would make more sense if the 'tail pins' on the purple engagement levers were intended to prevent accidental vibration- or centrifugal-based *reverse engagement* with the transmission gear. And what I am suggesting by that is their extension, into the window of the yellow annular ring, would prevent them from accidentally interfering with the free rotation of the unselected transmission gear, as the lever passed through the region wherein such a compromise of function might occur. Do you see it now?

Hodaka used a simpler version of the same on their bikes in the late 60's, early 70's. Counter shaft and main shaft gears were constantly engaged with each other. Individual gears were selected by a rod that ran through the shaft and pushed ball bearings out to engage a particular gear. It was the simplest transmission to work on, but Hodaka's implementation meant it had to be worked on more often. Nice video.