Torotrak's Full-Toroidal Variator

Torotrak's full-toroidal variator.

[@MrUnderEstimated]

Engineering explained brought me here.

[@MegaAtHome]

No commnet for two years? Well, lemme say then that this is a good video with high quality CGI and commentary. Much appreciated from my side

[@benjaminboyer39]

If you're wondering why these aren't common in different vehicles, it's because the company entered administration and has been dissolved / sold since ~2016 or 2017. Investors lost interest when the pure electric car became common, which is a huge shame because this could have been amazing for a variety of reasons

[@apollorobb]

Nissan's Extroid CVT was the first of these back in the late 90'S

[@cesteres]

Much better than belt drive

[@rollmeister]

I saw this used in semi trailers in the 1980's. It was described as an infinitely variable transmission.

[@jairbuldeo-rai9732]

Tbh I think this type of transmission wouldve been way more reliable than the conventional steel belt configuration. This set up looks way more confident and stronger. I am also here because of the Nissan Toroidal CVT

[@Avetho]

One thing I find interesting is that this type of transmission could have a PTO output if it were put just in front of the rear axle of a truck, where the output gearset can shift out of gear and allow the engine to run in neutral. It would allow farmers to tow things with their truck as usual, in a low gear at the peak torque of the engine to save fuel while doing so, but when they need to they can hook a bit of farm equipment to the hitch and plug in the PTO shaft to power something like a windrower, or a seeder, or something. A truck could become a tractor if needed, and of course the tractor would also benefit from the CVT. Its smart, and its a really good idea alongside PHEVs for the decades it would take to shift the world to full-electric, and even then biogas vehicles would always have their place no matter what. I think Halo ironically had it right, the hydrogen-powered Warthog is a combustion-powered vehicle and that is always very useful for lightweight long range vehicles.

[@joffrecueva5662]

It looks more complex and fancier than the time crankshaft from TENET.

[@camhadland6227]

Never expected oil could make something stick better ngl

[@rickchamtube]

researchers are now finding that electric cars would benefit >15% efficiency with CVT like this.

[@jeffreygoodsell7849]

Very instructive and clean

[@cabaneencac5168]

I only hope that the contact fluid for traction between the discs is effective because if I rely on my snow blower, (of course my snow blower only has rubber as a contact point) at some point this principle will slip over time.

[@martinda7446]

For everyone commenting and saying 'stuff' this system has been around since about 1810.

[@alexpowers3697]

Wow. If you could fit that to a tractor trailer that would be great for the trucking industry.

[@ssureshot]

I couldn't see how this would not slip or quickly wear out.

[@johndelong5574]

Most brilliant

[@stevechance150]

My automatic transmission has lasted 300,000 miles with zero maintenance.

[@pugalstech]

Super

[@MostlyIC]

my question is how do you keep all six rollers perfectly synchronized (at the same angle) otherwise they will be working against each other, if there isn't something automatically self-correcting in each individual roller actuator it seems things will get out of whack soon, and the thing will first loose efficiency and eventually wear out prematurely ???