How do I make the swing behavior like swing copter

I've searched the forum but i didn't find a solution for this matter. Has anybody an idea how to make the swinging behavior for the 'hammers'?

Thanks a lot for your help

Have you looked at the sine behaviour, for I guess it will do exactly what you'd like..

It could be so easy... Thanks a lot man!

Have you looked at the sine behaviour, for I guess it will do exactly what you'd like..

Thank you