My brother is a mechanical engineer.
He makes all kinds of things. Take a look at this Harley 1/4 scale
Knucklehead engine which is built to run: https://www.youtube.com/watch?v=lZutS12Q3Qs
He makes all kinds of things. Take a look at this Harley 1/4 scale
Knucklehead engine which is built to run: https://www.youtube.com/watch?v=lZutS12Q3Qs