New Transmission Design (best, engine, diesel, transmissions)

[iTsLiKeAnEgG]

This looks very interesting, an infinitely variable transmission that uses a gear driven setup. It took me a moment to figure out how its working but its quite ingenious.

Video: Is Steve Durnin's D-Drive the holy grail of infinitely variable transmissions?

[TheViking85]

...disregard this post, moderator, feel free to delete.

[JBrown]

Interesting..and a nice prototype...but as with most "break thru demos" there's always a bit of "magic" going on.

In this case note there is NO LOAD on the output shaft. Just a free spinning knob with a crank handle on it to show that is turning.

Real world applications require large amounts of output torque, there is NONE being demo'd here.

[NJGOAT]

The torque load is what kills the CVT and other similar designs. They are very trick and I like the engineering behind them, but they just can't take any kind of serious power/abuse without crapping out.

[Lux Hauler]

Originally Posted by JBrown

Interesting..and a nice prototype...but as with most "break thru demos" there's always a bit of "magic" going on.

In this case note there is NO LOAD on the output shaft. Just a free spinning knob with a crank handle on it to show that is turning.

Real world applications require large amounts of output torque, there is NONE being demo'd here.

Originally Posted by NJGOAT

The torque load is what kills the CVT and other similar designs. They are very trick and I like the engineering behind them, but they just can't take any kind of serious power/abuse without crapping out.

Yes, but CVT's depend entirely on a frictional coefficient! This is a full time geared system, it can easily be built to hold massive loads. Not to mention his design is astoundingly simple.

He certainly has something here... I wish him the absolute best.

[TheViking85]

It would certainly make sense on large boats (freight/cargo etc.)

[Lux Hauler]

Originally Posted by TheViking85

It would certainly make sense on large boats (freight/cargo etc.)

Good point. Currently most of this is done by diesel driven generators powering electric motors. Large amounts of energy is lost in that conversion.