Thread: Failed front wheel bearings - where did I go wrong?

That’s what I thought.
Is 450 kg at 1 m 450nm?
Or 45kg at 10 metres?

Originally Posted by fitzy

So 100 kg x 1 metre equals how many nm?

One kg exerts a downwards force of 9.81 Newtons. Equation: F = ma or F = mg, where m = mass and a = acceleration, and gravity's acceleration "g" at the earth's surface is 9.81m/s². So 981 or 1000Nm in round figures.

Originally Posted by ballbag

100

Hmm no - 1kg = 9.8n so 100kg at 1m is 980NM

Yeah, sorry that’s right.

Originally Posted by ozscott

What were symptoms of the failure Ballbag? Cheers

Just the noise.

With wheel off ground the freeplay was obvious.

So the D2 has just one(per wheel) of those pretensioned bearings?

The D2 has unitary hubs.
All the torque does is stop the hub from moving on the splines.
Maybe the OP sat in water for a while or the hub was faulty when fitted.

Regards Philip A

Originally Posted by goingbush

My 450Nm torque wrench is a Meter long, i'm 100kg & have to sit on it & bounce

Bouncing will totally negate the accuracy of the torque wrench.
Amongst the very first things I was taught about torque wrenches, was that they are designed to be used with a steady pull/push
They mostly rely on the deflection of the handle or an internal bushing, to measure the amount of force being applied, and a bounce, or shock loading, will alter that deflection outside the known parameters.