Dyna-jet a small engine that starts by pumping air through, does it still exist Thanks?

Question

I wound hide when one was around,

indeed, unbelievable noise,

Answer 1

there called pulse jets...these a lot on ebay

Answer 2

I havent heard of one of these for years!  I would check e-bay or model a/c forums.  I know exactly what you mean, but it's been a long time since I've seen one in action, much less for sale.  The little mini spark plug was cute too.  You used to mount them to "baseball bats" and put a 100' cable on them and fly them in circles like U-Control a/c.  They are noisy and go like crazy!  Good luck, wish I could be of more help!  Generok.