constant 7 10 leave

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ballspoint
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constant 7 10 leave

Post by ballspoint » February 13th, 2018, 6:15 pm

Our centre on lane 4 is often leaving the 7 10, about 5 times in the last 2 weeks.
Is there a issue here? pins off their spot?
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EricHartwell
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Re: constant 7 10 leave

Post by EricHartwell » February 14th, 2018, 3:11 am

ballspoint wrote:Our centre on lane 4 is often leaving the 7 10, about 5 times in the last 2 weeks.
Is there a issue here? pins off their spot?
Are you playing the same line on lane #3?

I would tend to believe there is a topography issue causing the ball to enter the pocket late.
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ballspoint
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Re: constant 7 10 leave

Post by ballspoint » February 14th, 2018, 5:44 am

Its happening to many bowlers, so different lines, angles, balls, speeds.
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Re: constant 7 10 leave

Post by RobMautner » February 14th, 2018, 3:37 pm

Most probably topography: part of the lane on one side is most likely tilted away from the headpin causing the ball the fall away from the pocket. My guess is that lefties on the same pair rarely have the same problem.

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Re: constant 7 10 leave

Post by georgeh » February 14th, 2018, 11:37 pm

RobMautner wrote:Most probably topography: part of the lane on one side is most likely tilted away from the headpin causing the ball the fall away from the pocket. My guess is that lefties on the same pair rarely have the same problem.
you are likely correct on it being topography, but not how you think, imho. More probable, the case would be that the lane tilts downhill, as the ball approaches the pocket, and speeding up, missing the sweet spot.

The ball rolling uphill, would slow the ball slightly, helping most bowlers.

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Re: constant 7 10 leave

Post by RobMautner » February 14th, 2018, 11:46 pm

georgeh wrote:you are likely correct on it being topography, but not how you think, imho. More probable, the case would be that the lane tilts downhill, as the ball approaches the pocket, and speeding up, missing the sweet spot.

The ball rolling uphill, would slow the ball slightly, helping most bowlers.
If you look at Kegel lane maps, you'll see that the great majority of topographic features are areas that slant either toward the pocket or away from it. BTW, what's "the sweet spot"?

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Re: constant 7 10 leave

Post by georgeh » February 15th, 2018, 12:18 am

RobMautner wrote:
If you look at Kegel lane maps, you'll see that the great majority of topographic features are areas that slant either toward the pocket or away from it. BTW, what's "the sweet spot"?
I've seen Kegel's website and aware of the mapping. I also read an article about the changes of lane topography and how it affected some of the best bowlers at Kegel.

I'm also aware that many lanes that required resurfacing prior to synthetics, had lanes dished (Langlo) toward the pocket to help league bowlers before reactives. I also have watched several installations of synthetics over the dished lanes and the dished centered wasn't completely planed leveled before the lane beds were installed. I can assume that knowing wood reacts to moisture that any lane installation that begins not perfectly level will be prone to inconsistencies. I believe in that article there was mention of uphill vs downhill reaction relating to speed.

sweet spot; the inexact science in finding the pocket area that most anything carries

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