What's your opinion ? 14 / 15, design or ?

[billf]

I'll take that bet, and you get the name the stakes.

If the ball is encountering "too much" friction, then it is no longer in the skid phase.

So there are no variable to coefficient of friction? All or nothing? Come on Mike.

[billf]

There is friction during the entire skid phase. It's what allow that phase to end. So too much would shorten the skid phase causing the ball to enter the roll phase too soon. Without friciton axis rotation and ball speed wouldn't matter.

[Mike White]

So there are no variable to coefficient of friction? All or nothing? Come on Mike.

It's not so much ALL or nothing, there are degrees of Some to ALL, but the Skid phase has to be nothing.

Skid phase means no friction resulting in a straight path.

Hook phase means some friction causes a force not in line with the path of the ball, resulting in a parabolic path until the forces align with the path at the moment the hook phase ends.

Roll phase is back to a straight line because there are no forces to make the ball change direction (until it impacts pins).

[Tony]

I would bet you play outside and the Diva is encountering too much friction during the skid phase reducing the potential energy at impact.

I was standing with the inside edge of my left foot at board 22 and throwing over 11/12

[Mike White]

There is friction during the entire skid phase. It's what allow that phase to end. So too much would shorten the skid phase causing the ball to enter the roll phase too soon. Without friciton axis rotation and ball speed wouldn't matter.

Friction will cause the ball's rev rate to increase, and the ball to slow down.

In this video, at about the 3:00 mark and forward you see the graph of the ball's rev rate.

Once the ball hits the lane, the rev rate is very flat throughout the skid phase.

Not until much further down the lane does the rev rate begin to increase.

[Aslan]

So judging by your stats would you would be more inclined to say the weight is the issue more than anything?

It's hard to say for certain. If I had no variables in my game at all...and just decreased weight...I could say with more certainty. All I can do at this point is look at the stats. And the data for post-15lbs isn't significant enough at this point. For example;

Single Pin Leaves:
8-pin: I've left the 8-pin by itself 69 times total (since roughly the beginning of 2013).
Since switching to 15lbs back in August; I've left the 8-pin 6 times.

So while I had the 16lb ball, I left the 8-pin 63 times over 21 months...exactly 3 times per month. I switched to the 15lb equipment and in 2 months have left it 6 times....for an identical rate of 3 times per month. The only single-pin I leave less often is the headpin. For the 8-10, I've left it 59 times total and 5 times in the last two months....again, both just shy of 3 times per month.

So statistically there would appear to be no difference. Which means it's either imaginary and in my head, or it's there but you have to compare non-quantitative elements....like...many of those weak hits that left an 8-9 with 16lb equipment, many were misses right where I just lucked into clipping the headpin. Of the 5-6 examples in the past couple months, those most often appear to be pocket hits where leaving the 8 or 8-10 is more aggravating.

[billf]

Basic science say any time two objects touch with at least one moving friction is generated. The increae in friction causes the hook phase. The more porous the surface the more friction that is generated sooner but it is a build up. Just as with an internal combustion engine, oil lubricates and REDUCES the friction between moving parts not eliminate it

[Mike White]

Basic science say any time two objects touch with at least one moving friction is generated. The increae in friction causes the hook phase. The more porous the surface the more friction that is generated sooner but it is a build up. Just as with an internal combustion engine, oil lubricates and REDUCES the friction between moving parts not eliminate it

The surface of the ball going down the lane doesn't change, it's the thickness of the oil between the ball and the lane surface that changes.

In the skid phase, the oil starts out thick enough to cause the equivalent of hydroplaning in your car.

[Aslan]

God…I wish Rob Mike and Bill would settle this dispute….with ROBOTS!!!



I'm gonna recruit Bill Nye the Science Guy to come to this site…and in between discrediting creationism…he's gonna slap you with some science!!!

But still, first choice, ROBOTS. And have the battle in that barn that Iceman bowls in…maybe we'll get lucky and it'll get set on fire by one of the robots.

[Aslan]

Although…knowing Missouri…as soon as one of those robots enters the state…Missouri will induct it into the Missouri Sports Hall of Fame.

Mudpuppy Cliff Notes: Where the heck is ZDawg??!