after two days of research I was still wondering nobody seemed to explain the nature of aligning the actual dogs. I thought even at the matched speed, if the dogs aren't aligned with eachother, the gears would still grind against eachother a lot before managing to slip into mesh. I now understand that it should have been obvious that the dogs are pointed, not flat, so the chances of lining them up point-to-point are incredibly slim and can still be overcome. NOBODY DEMONSTRATED THAT PART. 10/10 best video on KZfaq ever.

Extremely clean animation and well-chosen camera angle to show exactly the parts in action to understand how synchronizers function. Thanks!

I can't tell you how much I appreciate those who make these kinds of videos. They are so helpful in explaining things to my customers.

as someone who's just learning about this, I found this to be a fantastic explanation. every time I thought "but what about...", immediately there was an animation explaining it

This type of animated learning aid is not very common in aviation maintenance schools (not sure about automotive maint schools). Reading sentences/looking at photo images can teach only so much. "Things in motion" is the best way for learning.

This is by far the best video on mesh synchronizer

What an animation, what a time to be alive

I knew how synchros work, but only in theory. All animations about transmissions are always directed towards new people, with very abstract mechanics, that wouldn't really work in the real world. This, however, is perfect, because it shows us how stuff _actually_ works. We all already know how a transmission works in _theory_ but now we want to see the actual geometry of parts. Thanks for this animation!

Beautifully explained... waited for a good video on how the synchromesh unit works for so long... TNX

One important thing you missed is the blocker ring can only rotate less than 1 tooth apart from the shift sleeve, this way it has some play to displace the shift sleeve away from the gear before synchronizing it but the play is limited so it doesn't start rotating when pressed to the gear without the shift sleeve.

This is the best explanation on KZfaq about how synchro mechanism works in gearbox.Thank you very much.

The quality of this videos is amazing, thank you.

Very nice animation and narration. This video helped me understand gearbox synchronizers.

Amazing explanation and perfect animations. We all can see that your technique is really improvised.

Best video I have seen so far. I wish this video was the first in search list.

Your high quality animations makes learning a piece of cake. Thanks Thomas!

Your animations are amazing, great work. Thanks

By far the best explanation I've seen yet. Thank you for this animation video.

Finally... Thank you so much... I just wanted an explanation on how just one works to understand. So even if it was a 100 gears transmission. This is all there is in every two gears connected together by this combination in the video

Best video i have seen ever about synchromesh gear...

Spectacular animation ! Thank you for the video.

Beautiful animation and really well explained! Nice work!

Great visual explanation. I finally understand!!!

Wonderful animation!

Great video! I now understand why I have a blocker ring on my 4th gear, and exactly how it works. Thanks!

Your Animations are awosome... Waiting for more! Thanks

Wow... Now I have understood what is happening Great animation

I must say what a rather stupendous video 👍🏼

Amazing video and a great animation. Thank You so much!!

Really very great animation. And awesome explanation.

Great video and worth adding to my automotive lessons.

Really love your works. When i was a kid ,i have a dream to make sth like this

I loved this video . Best video i got when i was in need of it

Excellent video.

Might want to add that the recesses in the blocker ring limit rotation of that relative to the shift sleeve of a half tooth either side. Good explanation though.

Nice vid. Very easy to understand. Thanks!!!

This was a very good explanation.

Very good and accurate video!

This was very helpful and appreciate your effort in making this. Thank you for your help. :).

so details! nice video.

THIS IS SO GOOD!!

Fantastic work Thank you very much for sharing

Great video!

I rebuilt my Borg Warner Super T-10 transmission. All the specialized tools you really need is a decent snap ring pliers and a shop press. Actually really easy. You only must watch 2 other videos on KZfaq to learn how to rebuild it.

I like this video. Excellent explanation. Thanks.

Excellent explanation

Great Work...

Great animation thank you

Best video ever seen on synchronizing process in a gearbox, thank you. The quality and beauty of the video is impressive too. I watched it several times to perfectly understand the process and I realized that an important stuff is shown but not explained. So here is a proposition for an improvement (if you consider updating this video) : Speak about and show the importance of the recesses in the blocker ring. These recesses are larger than the struts. The gap formed ensure that the shift sleeve cannot engage onto the blocker ring nor onto the gear wheel before complete synchronization (because friction of the gear wheel on the blocker ring unalign them). When synchronization is complete, the blocker ring go "backward" in is rotation to let the shift sleeve engage. Then the whole (sync hub+shift sleeve+blocker ring) go eventually "backward" or "forward" in rotation to align perfectly with the teeth of the gear wheel to let the shift sleeve engage on the gear wheel. Without this gap, the teeth would collide. So it is pretty important.

the animation is very good so that easy learn. great job

I'm waiting for more of your videos.

Excelent animation and explanation. Could you please do more videos with other types of syncrhomesh units?

Excellent presentation and description. One request: please add a reference line to the shaft to show rotation and/or lack of rotation of the shaft. 👍🏻

Fantastic visual aid....

really good video

super helpful! thank you :)

Ingenious mechanism.

I got the perfect explanation 👍🏻

Now this is something beautifull. You just made someone understang a ton of sh*t! Everything about manual transmisions makes sense now :D Thank you very much!

Thank you for video this make me understand in 3 minutes .

0:32 Struts/keys ; 1:40 Sychronization process; 1:50; 2:10 pre-synchronization

very good nice video man thumbs up for you brother keep doing this man and thank you for this you resolve one of my problems ;)

What happens when the gear shift grinds when the oil is cold? Is that due to the cold, thick oil being trapped in the grooves of the synchro ring and can't get out of them fast enough? Great video! Thanks a lot.

Gotta see it to understand it better!

Thank you very much.

What modeling software do you use?

having an exam with a german prof., only another german could save my life grazie

good educational video, god bless u mah friend 🤩

Wow you are the best

Great animation. Very informative and helpful. Things are starting to “click” for me :)

thanks and thanks ......thanks alot and respect ...for that video

Thank you

That explains why first to second gear takes a extra time to sync up due to the huge gearing difference from the two.

Okay, but how hard would it be to make a couple of these units with a set of dull files, eleven garbage bags of aluminum cans, and a propane torch? Asking for a friend. Super cool animation, top notch. And excellent verbal explanation.

thanks for share. :)

Could you tell - pushing gear faster is worse than slowly waiting until shifter goes in a gear after a moment of barely noticable resistance?

We are using this type of synchromesh unit in a gearbox we are developing but it doesn't seem to be working in 1st gear. There is no feeling of contact between the cone and the ring. You don't feel the friction attempting to slow the gear down. It simply grinds as though there is no synchro mechanism at all. I'm wondering if the proper engagement is based upon some sort of shimming tolerance so that the cone engages at the proper amount of lateral movement, and if that information exists, where can I find it?

THX!

nice

impressive😯

sweet i always wondered

Can we get the exact same video with ball and spring detents instead of strut keys?

Great clarity now on how syncros work, thanks. When you shift out of a gear there doesnt look to be any mechanism that pulls the blocker ring off the gear. I understand the blocker ring can only move axially and that the gear would then start to de-synchronise as vehical speed changes. Is this enough for the blocker ring to retract back towards the hub?

Good wark 👍

Thanks

can you give me a document about synchromesh gearbox with lock pin?...thanks so much!!!

Supper 👍

Hello, may I ask you a question? Is there a possibility? If synchronizer speed and gear speed are out of sync, the gear set begins to combine, and then the phenomenon of tooting occurs. Is there any Chinese subtitles in your video?

What prevents a point to point collision between the slider and the gear locking teeth? I can tell the the blocker ring will never have a point to point collision because of those square keys.

Good anination

Hi Thomas, what software you use for those animations? Also can you do please tutorial video on it? Thanks

So I have a little bit of grinding when i shift 1st into 2nd. Could this be the issue? Also is it expensive to replace?

Please make an animation of double declutching.

Hello, thanks for this. Why is the ring made of brass? What are the other parts made of? Thanks.

Question, why are the three struts necessary? What if there is no pre-synchronization?

02:48 - there is a mistake in the animation here. The animation shows, ones the rotational speeds are sinchronized, the blocker ring rotates slightly back while the cone clutch stays in place - this is impossible. Otherwise, the blocker ring could rotate back under the sleeve pressure before sinchronization is complete. In real, after sinchronization, the blocker ring rotates a bit together with the cone clutch and gear, and then sleeve is shifted.

But, how does the blocker ring disengage from the conical face of the gear? i understand that there is a cone clutch friction between the blocker ring and conical face of the gear. Then wouldn't this require a force in the reverse direction to disengage? Is this force provided by the driver?

amazing videoo

Finally i understand

how the blocker ring tooth and main gear's mating tooth are aligned? (as the blocker ring is simply floating between two components how is it happening)