Matt K wrote: ↑Fri Sep 10, 2021 9:13 am Just measured; it's 3 1/8" (3.125") or 79.375 mm for the 356 slide I have.
Incidentally, the 356 is not as small as people think it is. Its very much a "medium" bore style instrument. The tuning slide is identical to the 548 I have, well at least they are interchangeable. They might not literally be identical. Same with the 646/645 slide I have. I don't know if the taper is different but I don't really notice a difference when I swap them out. The throat on the bell is larger than the Shires I have, although not by much. With some judicious buffing, I might be able to fit the Yamaha slide in the Shires receiver. It is narrower though, by a small amount.
THe bell itself is very Bach 36 like, although without the soldered bell bead. A bit on the heavy side too. A King 3B+ is likely to be substantially brighter than it even though it has a larger upper slide tube. But I don't have one to compare. The valve, as someone else measured awhile ago for me, is 547 though, so a touch smaller than the 36 valve, but possibly without the weird things Bach did with chokepoints etc.
The 356 slide on my YSL548 is really nice. A tad heavier/more covered than I'd prefer. But certainly a wonderful medium bore style instrument for someone looking for something lighter than a large bore but perhaps not as light as a small bore instrument.
This is awesome info. Thanks a lot. I'm perpetually in the market for a .525 (or in this case, .500/.525) horn. I don't have the money, time or space to be trying stuff out constantly, so getting good info like this is much appreciated. I always assumed the 356 was basically a 354 with an F-attachment and dual-bore slide.
