A woman in one of my leagues whom is on the same team as I am, has a lot of speed and revs and used to average 180-185. She is an excellent bowler, but used to be very inconsistant as she would roll 650 on one lane condition and 480 on another. Her ball would be "alive" on one condition and a "dud" on another.....The local driller then drilled a new ball for her, just like the one she was using and her ball became "alive" on any condition, she became consistant, her scores "shot up" and she now averages 200-207. Her increase in performance isn't a few weeks thing. She has been averaging this 200-207 for 4 months now.

I asked the driller what was different and he said he drilled the new one "Reverse Leverage.".... What in the world is Reverse Leverage?

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Don't wear your self out cutting wood with an axe...Use a Buzzsaw

Take a look at the ball.

if the ball is set up like this:

---------------cg
----o---o---
-----------p-----pap

------o-----

Then the ball is a 315 drill.  THe angel from pap to p
around to the cg/mb is 315 degrees.

This drilling is supposed to tame  the reaction due to release
inconsistansies.
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Eric T. Spivey, P.E.
 Visionary Test Staff Member

I've heard people try to describe Rev Leverage drillings as Reverse Leverage...might that have been the case here?

This is what a rev leverage look like on my ball.This is drilled for heavy oil with carrydowns.If you have a good strong ball speed this ball is for you 'coz on the scale of 1-10, the length for this drilling is 1 & backend is about 9.This drilling is like a stacked leverage,but the pin is lowered in the center.The stacked leverage is on a scale of 3 in length & backend is 10. You can't use a ball with longer pin placement on this,I think, It's only until 3 1/2" pin only,4" & above pin will not be possible to use at all.The disadvantage of having this drilling is when you're lane is dry in the heads 'coz this ball really makes a move right away 'coz of it's length & sometimes it's hard to control,but on a really heavy oiled lane this ball is awesome.

Check out the pix of a rev leverage drilling on my erase it:
http://home2.nikonnet.com/servlet/com.arcsoft.LoginNew?com=arcsoftBanner&awp=index3.html&DIRECT=&USERNAME=mrbootycall2&PASSWORD=nikoneditor_1899349572&WHO=memberguest

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Thanks,

Triple X


Edited on 2/16/2004 2:17 PM

Edited on 2/17/2004 8:58 AM

hey this might sound stupid but can someone give me a diagram of the so called wiseman drill or the 315 degree drill

Plus 40, this was an Ebonite Adrenalin ball.
--------------------
Don't wear your self out cutting wood with an axe...Use a Buzzsaw

If you thought you saw a 4" pin, then it wasn't a 315.
315 needs a 0-1" pin.
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Eric T. Spivey, P.E.
 Visionary Test Staff Member

OK everybody. I saw this ball today as she was substituting in my league. This may be a little difficult for me to explain, but I'll try.

The ball is an Adrenaline with a 4" Pin

The ball is sort of rev leverage (I guess) but again it isn't rev leverage.

It is not exactly like the drilling (rev leverage) #3 on the Ebonite Drill Sheet

The Pin is under ring finger and a little over half way towards the mid grip line between ring finger and mid grip line. Also, the middle of Pin is in line with the outside edge of ring finger hole.

The CG is kicked out all the way down to the VAL, so it is not in a 12:00 position to Pin as the Ebonite drill sheet shows.

The weight hole is on the PAP and not in the thumb quadrant as the Ebonite drill sheet shows.

I can't draw on this thing how it looks, but I think you knowledgeable drillers
will understand and get the picture here.

-----0-----0
------------o  Pin
-----------------* Weight Hole on PAP
------------------x  CG on VAL
--------0

The driller kept insisting it was reverse leverage. I told him I had spoken to several people and they said it had to be rev leverage as they had never heard of reverse leverage. Finally he said, yes it is rev leverage and that rev leverage and reverse leverage are the same thing.....So I dunno guys. It isn't rev leverage either is it?.......You guys make the call.

The lady throws hard (guess 18-20 mph) and very high revs. She releases off the side of ball by her foot. Thumb is probably between 9 and 10 o'clock. This ball is a monster with her high revs and speed. She has scouts flying every shot.



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Don't wear your self out cutting wood with an axe...Use a Buzzsaw

Edited on 2/17/2004 11:31 PM