Sure: more speed = longer hops = CB airborne at OB. But the hopping CB is an undesirable side effect, not an essential ingredient.
Trying just means moving the CB a little back or forward.
pj
chgo
For what it's worth, my best break is at about 23mph give or take a little. I can hit into the 30mph range, with almost ZERO CONTROL. I will also "CHOKE UP" on my cue a bit for my break shot. Something I learned from TheSleeve. (He has the most powerful break I have ever seen, including Shane.)
Square hit on the rack + correct contact on cue ball = good break.
Also, one tip to any body who cares,
LEVEL STICK AT POINT OF CONTACT WITH CUE BALL WILL GIVE YOU MUCH MORE POWER.
I have a check list when I practice my break,
1. Preshot routine.
2. Correct bridge, as to achieve my half tip above center.
3. Stair down the point of contact on rack.
4. Level stick at point of contact with stick and cue ball.
5. Leverage body forward (not upward) slightly after contact with cue ball.
6. Finish with tip resting on cloth.
7. Pull stick off table before balls hit it.
Keep in mind you'll have to adjust for what works for you, but this is a winning formula for A LOT of good players.
Hope this helps,
Justin