bowl1820
09-06-2012, 11:58 PM
In regards to the exit point formula (Pattern length - 31= Exit point), there's a opposing view (from Mo) to "Take the length of the pattern minus 31 rule and shove it. Not accurate."
Which I believe is mainly because the formula goes wonky on short patterns and it's possible to have a breakpoint back in the oil before the exit point.
So knowing where to find a starting place for the breakpoint would be more helpful. So we have to look at the forward oil, because forward oil controls the breakpoint location.
Now a way has been put forth on how to find the board the breakpoint is on. By looking at the composite graph of the oil pattern. (you can also find it by looking at the Lane Machine Settings chart)
What you do is look for the highest corners of the red bars on the bar graph and subtract 3. That's the place to start looking for the breakpoint. (But this doesn't tell you how far down the lane it is)
Remember that the loads are applied to the buffer brush, so ALL the forward loads affect the breakpoint.
Here's a example: using Kegel's DEAD MAN’S CURVE 3043 Pattern
Direct Download the pdf for the pattern here http://www.kegel.net/V3/PatternLibraryFunctions.aspx?OPCODE=DOSYAINDIRT&ID=607&Type=2
or see the webpage here and click on composite view http://www.kegel.net/V3/PatternLibraryPattern.aspx?ID=607
http://s11.postimage.org/90j2ipsdv/comp.jpg
In this example the highest red bar is on board 14, so 14-3= 11. That's where you start looking for your breakpoint.
http://s10.postimage.org/8f1g8i8l5/comp2.jpg
from the Lane Machine Settings chart
Now my thought is not so much to shove the exit point formula, but to look at the situation and see if it would be beneficial if used. Like use the end of pattern minus 31 to give you a starting place, when the only info you have avalible is the length of the pattern.
And also look at how it might be combined with the breakpoint formula.
Which I believe is mainly because the formula goes wonky on short patterns and it's possible to have a breakpoint back in the oil before the exit point.
So knowing where to find a starting place for the breakpoint would be more helpful. So we have to look at the forward oil, because forward oil controls the breakpoint location.
Now a way has been put forth on how to find the board the breakpoint is on. By looking at the composite graph of the oil pattern. (you can also find it by looking at the Lane Machine Settings chart)
What you do is look for the highest corners of the red bars on the bar graph and subtract 3. That's the place to start looking for the breakpoint. (But this doesn't tell you how far down the lane it is)
Remember that the loads are applied to the buffer brush, so ALL the forward loads affect the breakpoint.
Here's a example: using Kegel's DEAD MAN’S CURVE 3043 Pattern
Direct Download the pdf for the pattern here http://www.kegel.net/V3/PatternLibraryFunctions.aspx?OPCODE=DOSYAINDIRT&ID=607&Type=2
or see the webpage here and click on composite view http://www.kegel.net/V3/PatternLibraryPattern.aspx?ID=607
http://s11.postimage.org/90j2ipsdv/comp.jpg
In this example the highest red bar is on board 14, so 14-3= 11. That's where you start looking for your breakpoint.
http://s10.postimage.org/8f1g8i8l5/comp2.jpg
from the Lane Machine Settings chart
Now my thought is not so much to shove the exit point formula, but to look at the situation and see if it would be beneficial if used. Like use the end of pattern minus 31 to give you a starting place, when the only info you have avalible is the length of the pattern.
And also look at how it might be combined with the breakpoint formula.