High articulation driveshafts

[jmspeedfreak]

Hi, I'm trying to find out if anyone has ever found a drive coupling able to handle high levels of power (>100kW) at speeds up to 7-8000rpm while able to articulate from 0 degrees up to 90 degrees.

I thought about a bevel coupling with input and outputs picking up off a joint bevel gear but worry this is heavy and unwieldy.

Is hydraulics or electric drive my only option?

An application would be for a car able to steer the wheels 90 degrees out of axis from the driveshaft.

Alternatively arrangements with the nominal shaft angle at +45degrees to the wheel in normal operation and articulating to -45degrees in the other mode would be considered.

Thanks,

John

 

[mloew]

Did you see the thread Turning through + - 90 degrees with cv joints (thread78-143548) or search this site?

Best regards,

Matthew Ian Loew


Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[Fabrico]

A couple of things seem to be out-of-wack:

The first is 7-8,000 RPM. Is there an axle with gear reduction or does the car simply go 120 MPH sideways?

The second is 90*. A wheeled vehicle can literally turn in place with less than 90* at the wheels. Is there another axle that can share the turning chores or does the car actually go sideways?

 

[patprimmer]

If you give us some idea about your application, maybe we can give your problem serious consideration and suggest alternative ideas.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[MikeHalloran]

My van's driveshaft turns ~4000 rpm at 90mph. The axles turn at about a third of that. You want to parallel park at 270mph, or what?



Mike Halloran
Pembroke Pines, FL, USA

 

[jmspeedfreak]

Thanks for your ideas.

I appreciate the driveline calcs for vehicle speed and so on but don't fear - you're all right in your points but nonetheless I want to be able to rotate the output of the driveshaft through 90 degrees without excessive losses / efficiency degradation.

Does anyone know a way?

 

[Fabrico]

No automotive/industrial CV joint will operate at that angle and speed.

Driveshaft speed does not make sense.
Drive train layout does not make sense.
Secrecy level set too high.
-end-