If you’ve ever heard the noise a filling cabinet makes when it falls down the stairs, thats an Orange bike riding down a trail that is. Horrible things to ride near, but they only just pip the Whyte PRST1 for sheer sounds-like-it-was-built-out-of-tin-and-rusty-boltishness.
That said they are fun to ride but unless you have some patriotic reason for buying a Five you’d be better off (in my ever-so-humble opinion) with buying a Cannondale Prophet instead. Better warranty, similar ride and a damn sight less noise.
I was always half-tempted to squirt some builders foam into the swingarm on mine to see if it dampened the noise…
I remember a chap on SDH tried that with his 223 swingarm and due to over-estimating how much foam would be required the swingarm came off a little worse for wear. Be careful, that stuff can expand with some force.