How to Calculate Gear Speed in RPM?

[The Jargon]

Hi guys,

How would I go about calculating gear speed in rpm? If I know the input shaft speed, output shaft speed, gear ratios and tyre size.

Thanks.

 

[xxChrisxx]

What do you mean by 'gear speed' in rpm?

 

[The Jargon]

What do you mean by 'gear speed' in rpm?

How fast the gear is spinning.

 

[xxChrisxx]

Well they'd be spinning at the same speed as the shafts.

 

[The Jargon]

Sorry I meant engine speed haha, don't know why I said gear speed.

 

[xxChrisxx]

By input shaft, I assume you mean transmission input shaft.

What is driving / controlling the speed of this shaft?