Hi, AnyBody Supports,

I’m now studying an example “BikeModel3D”, and there’s some questions.

```
//This is the definiton of the crank moment
AnyForce CrankMoment ={
AnyJoint &Jnt=.CrankJoint;
F={...BikeParameters.CrankMomentOffset-...BikeParameters.CrankMomentAmp*cos(4*pi*t/...BikeParameters.T+ ...BikeParameters.CrankMomentPhase)};
};
```

In the following code, is this means giving an obstruction to the bicycle rider?

If this is right, can you tell me how the formula produced?

And what is the parameters mean, like CrankMomentTopDeadCenter,

CrankMomentOffset, CrankMomentAmp, CrankMomentPhase.

Thanks for helping,

Best regards,

Yeh