Megan Lad.....I have twisted the throttles of some lovely old Radials....in the H-34 and H-37.....and indeed music to the ears and palpitations to the Heart...especially when they decided to skip a beat or two in a asthmatic fit of coughing,.
The Pratt and Whitney R-2800 Engine was a classic Radial Engine design.....and having two of them on the H-37 made for a lot of noise....exhaust fumes....and leaked oil.