Much ado has been made about how Rocket reeds shouldn’t be played in pipes they’re not made for. In general, I’ve found this to be mostly nothing to worry about. I’ve put all sorts of glass tongued Rockets into all sorts of pipes. The worst that ever happened was they consumed air like nothing else, but still sounded great, haha. But one day I acquired a set of carbon tongued Rockets that were made for Robertson pipes and the bass just would not work in the seller’s Hendersons, if I recall correctly. I had the exact same experience. Now, the tenors generally work in any pipe, it’s the bass reed that is selective for a specific bore design. Starting the bass sharp, as one lengthens the bass drone it comes close to in tune, but starts growling and then starts going out of tune again. Here’s what it sounds like in a set of Chris Terry pipes (which are purportedly (Duncan?) MacDougall based):
As any regular reader would know, I’ve got a friend with not one but two sets of Robertsons: 1920s ebony and 1950s blackwood. So a quick jaunt to his house to test if these reeds actually worked in some sort of pipe, and they do! They work just grand in Robertson pipes. Go figure?!
It turns out this friend has his own set of *glass* Robertson spec Rockets, which allowed us to confirm a statement that used to appear on the Kron website (I’ll post a screen shot at the bottom in case the link dies) that stated carbon Rockets were generally mellower than glass Rockets. The glass Rockets below are definitely bolder than the carbon Rockets above (same recording conditions, sorry there’s no chanter).
We didn’t record it but the carbon Rockets worked just as well in his 1920 ebony Robertsons which is curious because there are some bore size difference between the two. It’s like the reeds just know they’re in a set of Robertsons!
Now, I have gotten these carbon Rockets to work in one other pipe, Keith Jeffers. I had to dig through my archive of recordings that I never shared on the blog before to find one but I do have proof from June of 2014:
It all just goes to show how fickle bass drones and reeds are! The key is to find one that is steady and consider yourself lucky if it sounds great too!