I believe that the spindle hole for new school Profile bearings are slightly smaller than flights older school (mid school I suppose where there was a non threaded spindle), but will Flight bearings fit ino Profile cups? I sort of like the silver look, so I'm curious if I could use my flight bearings with new school Profile cups. Does that question make sense. Thanks gang.

i see what you're saying, see if this makes sense...

1) profiles use a 19mm axle & 19mm bearing.

2) the mid-school flights you're referring to use an (approximately) 18mm axle, a 20mm bearing, and an (approximately) 1mm shim/bushing between the axle and bearing.

3) the newest flights (taiwan) use a 19mm axle and a 19mm bearing.

you can't combine the mid-school flights w/ the profile bearings, but you could get the current "flight 2" axle and use that with your flight arms and a profile bearing set.

P.S...

no, you can't switch the RL bearings into the profile cups - the outer diameter of the bearings is different.

The outer diameter is what concerned me. Thanks.

Mr Coasterbrake, you deserve an award for how many times I've seen you help people on here (I'm one of them).

Kudos my friend.

Astrodamus...shouldn't you be watching the Astros game? Dang!!! I just checked the score 10-4 Cards...never mind, DON'T watch it. C'MON Astros!!!!!!!!!!!