BallReviews

General Category => Drilling & Layouts => Topic started by: Brickguy221 on February 15, 2004, 06:27:31 PM

Title: What Is Reverse Leverage?
Post by: Brickguy221 on February 15, 2004, 06:27:31 PM
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
Title: Re: What Is Reverse Leverage?
Post by: omegabowler on February 16, 2004, 09:34:59 AM
all I can think it is, a 315 deg drilling.

I wish there was standard lingo. ie. pin 4" from pap, 3.5" above gripline, 75 deg layout.


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"deserves got nothing to do with it."
-- William Munny
Title: Re: What Is Reverse Leverage?
Post by: livespive on February 16, 2004, 09:47:02 AM
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
Title: Re: What Is Reverse Leverage?
Post by: channel surfer on February 16, 2004, 10:18:15 AM
Yea, the 315º drilling is suppose to be the most forgiving if a release mistake was made.
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Title: Re: What Is Reverse Leverage?
Post by: michelle on February 16, 2004, 10:34:22 AM
I've heard people try to describe Rev Leverage drillings as Reverse Leverage...might that have been the case here?
Title: Re: What Is Reverse Leverage?
Post by: Brickguy221 on February 16, 2004, 10:56:09 AM
I'll try to remember to look at her ball when I bowl with her Thursday. I've glanced at her ball before, but never paid much attention to it. Plus40's description seems like this is possible, but I will have to look at exactly how it is. I think I recall it having a 4" Pin or a bit longer and weight hole wayyyy up in the thumb quadrant. I'll report back after Thursday after I look at it closely. (note-She is a little strange about people looking at or touching her ball, but then again, I might be too if mine worked as good as hers....lol)

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Don't wear your self out cutting wood with an axe...Use a Buzzsaw
Title: Re: What Is Reverse Leverage?
Post by: Triple X on February 16, 2004, 11:22:00 AM
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
Title: Re: What Is Reverse Leverage?
Post by: michelle on February 16, 2004, 01:09:59 PM
Plus40, the rev leverage drill is definitely not the same as the Wiseman drill (the 315 degree layout).  I think people see the "rev" in rev leverage and automatically presume it to be an abbreviated form of reverse.  I have never seen reference online to "reverse" leverage, nor have I ever heard a pro shop operator reference it that way, but I have heard other bowlers call their drillings a "reverse leverage" when they had a rev leverage layout.
Title: Re: What Is Reverse Leverage?
Post by: stormerjip on February 16, 2004, 01:20:36 PM
hey this might sound stupid but can someone give me a diagram of the so called wiseman drill or the 315 degree drill
Title: Re: What Is Reverse Leverage?
Post by: Triple X on February 16, 2004, 01:25:11 PM
here check it out on this link for the 315 degree layout:
http://www.rollrite.co.uk/secrets.php?id=11
--------------------
Thanks,

Triple X


Edited on 2/16/2004 3:58 PM
Title: Re: What Is Reverse Leverage?
Post by: Brickguy221 on February 16, 2004, 02:08:59 PM
Plus 40, this was an Ebonite Adrenalin ball.
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Don't wear your self out cutting wood with an axe...Use a Buzzsaw
Title: Re: What Is Reverse Leverage?
Post by: Triple X on February 16, 2004, 02:56:37 PM
Here's another link from ebonite website of the rev leverage drilling for your info, Drilling # 2.

http://ebonite.com/techcenter/bombsdowndrill.php
--------------------
Thanks,

Triple X


Edited on 2/16/2004 3:53 PM
Title: Re: What Is Reverse Leverage?
Post by: livespive on February 16, 2004, 03:46:46 PM
If you thought you saw a 4" pin, then it wasn't a 315.
315 needs a 0-1" pin.
--------------------
Eric T. Spivey, P.E.
 Visionary Test Staff Member
Title: Re: What Is Reverse Leverage?
Post by: LuckyLefty on February 17, 2004, 10:01:21 AM
Brickguy!

Please answer this mystery for us!

Will you look at the ball or ask the driller exactly where pin and cg are.

I also am guessing he meant Revs leverage per the Ebo drill sheet but we are not there, YOU ARE!

Let us know.

REgards,

Luckylefty
Title: Re: What Is Reverse Leverage?
Post by: Brickguy221 on February 17, 2004, 10:29:11 PM
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
Title: Re: What Is Reverse Leverage?
Post by: Brickguy221 on February 17, 2004, 10:38:34 PM
How did the print on this page get so long that you have to move the page back and forth when you read it??????? It wasn't that way when I typed it but turned into that way when I posted it.

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Don't wear your self out cutting wood with an axe...Use a Buzzsaw
Title: Re: What Is Reverse Leverage?
Post by: LuckyLefty on February 17, 2004, 10:54:12 PM
Yep it's a modification, a kicked out revs leverage.

Or the fact that the cg is down has much of the same effect.

Lane#1 used to show a revs leverage somewhat similar to this on teh original carbide.

CG down and kicked out a bit.  Note cg below weighthole.
REVS leverage means exactly that, it revs early!!!!  Not reverse!

The pure revs leverage with the weighthole down 6 inches from PAP
REVS(not reverses) so fast that it seems the thing actually revs about 2 times even if one hardly lofts at all before it gets to the lane, often giving the impression that the player has lowered his track when looking at flare lines!

Your driller does not know terms but it sounds like he knows how to produce good results!

REgards,

Luckylefty
Title: Re: What Is Reverse Leverage?
Post by: Brickguy221 on February 18, 2004, 09:53:52 AM
Phatdon, the Adrenaline is sort of a flippy ball to begin with, so do these type drillings with a flippy type ball help give her all of these revs and HARD DRIVING hook on the back end? I've never seen so many scouts flying as she has.

What about lower speed and low revs players like myself, what happens on drillings like this?

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