PB+J wrote:
I just picked up one of the "folk" whistles this morning. Other than color and a certain amount of shoddiness in the casting, I can't see a difference. I didn't measure it, but they look the same to me
It's a terrible whistle though, very hard to play (for me, a beginner) and prone to rattling and cracking, and the second octave gets very cloggy very fast
It does have a nice tone. The blue one is dramatically easier to play. Neither comes close to the Killarney D whistles, which are just more consistent and responsive
I'm not sure whether this is actually the case or if the image isn't in perfect focus, but it looks to me like the edge of the labium looks both less sharp and slightly less even in the green than the blue one. I'm far from an expert in instrument acoustics, but one of the things I read about people doing when they tweak whistles is to hone the edge of the labium, so I'd suspect that could contribute to it being "a terrible whistle".
Not sure why it would clog faster -- I could speculate but only quite irresponsibly...!