Dr. Dave's answers to frequently-asked questions (FAQs), mostly from the AZB discussion forum
for more information, see Section 7.09 in The Illustrated Principles of Pool and Billiards,
Vol. V of the Video Encyclopedia of Pool Shots (VEPS),
and Vol. II of How to Aim Pool Shots (HAPS)
after-collision massé shots
What are some examples of how massé curve after object ball contact is useful?
Explanations and examples of this can be found here:
aiming swerve and massé shots
How do you aim swerve and massé shots?
The massé shot handout, "VEPS GEMS - Part XVI: The Massé Shot" (BD, April, 2011), "Coriolis was brilliant ... but he didn't have a high-speed camera - Part V: massé shot aiming" (BD, November, 2005), and Bob Jewett's December '97 article explain and illustrate a method that can be used to help aim massé shots. It was discovered in the early 1800s by a famous mathematician and physicist named Gustave Coriolis. It is referred to as the Coriolis aiming system or the "BAR" method ("B" for ball contact point, "A" for cloth aim point, and "R" for CB resting point). For a demonstrations, see this video from Vol. V of the Video Encyclopedia of Pool Shots:
More information and examples can be found here:
from Patrick Johnson (in AZB post):
cue and tip
Can a different cue or tip make massé shots easier?
Yes. Generally, people will be more comfortable with a shorter cue (especially with low ceiling height). However, the cue must have enough weight to drive into and impart spin to the ball. The cue should also have a larger diameter shaft to help it withstand the abuse of massé shots. Some people prefer a softer tip, but it won't hold up to abuse as well as a harder tip. But with a harder tip, you need to make sure it is well chalked (as with any tip) and that it is holding the chalk well to provide good contact with the ball. A medium-hard tip offers the good compromise of durability and chalk-holding reliability.
from Bob Jewett:
The cue that the artistic billiards players typically use is short, heavy and has a 14-16mm tip. Maybe 50 inches and 24 ounces. If you're going to be playing these shots in matches, you have to decide which cue you're going to be using for them. Also, the tip is typically soft, which means that your break cue is probably not appropriate. I think the soft tip helps keep the ball on the table.
Be prepared to change tips.
Wax the cue ball to get action more like on new cloth. If your cloth is old, there are two problems. The cue ball will tend to stick to the cloth as it's driven into it, which tends to kill the action and/or rip the cloth. The spin will take quickly, which doesn't get you the big arcs you're looking for.
Most jump cues will have a phenolic tip. Massé cues will use a leather tip because you still need grip to impart all that spin. A lot of massé cues will have a larger tip (14 mm). Some jump cues will, but most stay around 13 mm. I like a lighter massé cue, between 19-21 oz. I'll use a heavier one (24 oz) on certain shots. But some guys have them up to 30 oz or more. Jump cues tend to stay between 6-10 oz. Massé cues will also tend to be a little longer than jump cues. Most jump cues stay around 40 inches, I think primarily because of the weight issue. Massé cues are usually between 46-52 inches (don't take these numbers as hard stops though).
elevation and speed effects
How do cue elevation and stroke speed affect massé shots?
More elevation results in less cue ball speed. Less speed results in the CB curving sooner. For more info, see the second half of "Coriolis was brilliant ... but he didn't have a high-speed camera - Part V: massé shot aiming" (BD, November, 2005).
How can I improve my massé shot technique?
This video from Vol. V of the Video Encyclopedia of Pool Shots provides a good summary and demonstration of important technique elements:
Bob Jewett also has a good set of articles dealing with the massé shot here:
Welcome to Massé 101 (BD, December '97) -- basic massé concepts
Massé 102 (BD, February '98) -- massé techniques and practice
The Right Time to Massé (BD, March '98) -- sometimes it's the right shot
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