R8 spindle tooling is plentiful and inexpensive. Compare the R8 with the 9 B&S. Consider modifying your 9B&S to an R8 spindle recess.
It's a simple hard-boring job if you mount your lathe's compound slide on the table and set it to the taper's half angle.
Surely. And you only sacrifice a bit over 60% of the grip? Are Ate is a bad joke barely equal to a # SEVEN B&S.
Makes more sense to just lay-in a stash of Weldon-style side-locks, native #9 B&S and cut
serious chip. Leave the # 9
collets (still made, brand-new) for drills & such.
Or.. pop any other nose-closer collet (ER, TG) with a straight-shank into a #9 B&S collet, better yet - native #9 B&S tail - and mess less with a drawbar.
I've even got PDQ-Marlin "VS" on my Burke #4. And the vertical head of the "Quartet" combo mill.. and the Ellis DH.
"Obsolete don't mean useless", or we'd be short of feminine companionship and/or loyal dogs in our dotage!
B&S #9 may no longer be "mainstream", but it was
40-taper as displaced it.
Not wimp-ass Are Ate!
That's for BirdPorts so it isn't so b***dy obvious there's no
power back of the collet, nor a stiff enough mill to manage it well it if there was.
Ever notice half the "Bridgeport clones" out there are heavier, more powerful... and 40-taper, whilst the Chicom "mill drills" as mass less than a Hobart institutional or GI mess-hall
food mixer use R8?