Torque measurement

[Tom Parker]

Cool!

Doesn't look feasable though. It would be a very good sensor to have that
resolution. In first gear the torque is much greater but still same order of
magnatude which you aren't going to detect with a coulpe of hall sensors and a
magnet chip on a 10cm diamater cv joint!

Gary Derian <gderian at oh.verio.com> wrote:

>Torsional deflection, in radians, for a solid bar is ((L*32)/(pi*d^4))*(T/G)
>where d is the diameter, T is torque and G is shear modulus.  For your axle,
>I calculate 0.00267 which is 0.15 degrees.

>Gary Derian <gderian at oh.verio.com>

>>
>> What about putting a postion sensor on both the inner and outer CV joint
>(for
>> front wheel drive engine) and measuring the twist in the driveshaft?
>>
>> My Mini has a 450mm by 25mm driveshaft.
>>
>> Anyone know rough calculations for torque v twist?
>>
>> The motor puts about 340 Nm on the ground (100Nm at the crank) in top
>gear.
>>
>> --
>> Tom Parker - tparker at geocities.com
>>            - http://www.geocities.com/MotorCity/Track/8381/



--
Tom Parker - parkert at geocities.com
           - http://www.geocities.com/MotorCity/Track/8381/