how fast is your finger engine

[coulsea]

Add a bicycle speedometer to your finger engine and the grandchildren can have competitions

 

[GreggA]

That's a great idea!

 

[rlukens]

Agreed! Great idea. I've been thinking about making one for my grand kids. They'l wear that out.

 

[rlukens]

Were you able to input a wheel diameter that approximates true RPM?

 

[coulsea]

Were you able to input a wheel diameter that approximates true RPM?

You input the wheel circumference which will give a readout of between 3 and 4 kph so I added a zero which gives a speed of between 30 and 40 kph