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Author Topic: mass bias location  (Read 5658 times)

klep

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mass bias location
« on: October 20, 2004, 09:43:54 PM »
where can the mass bias be in relation to the thumbhole to be effective. does it need to be some where on a line even with the thumbhole or can it be lower than the thumbhole and still do the same thing. could somebody explain please.

thanks

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Speed - 17.5mph
Revs - Low
PAP - 5 1/4 over 3/4 up
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Re-Evolution

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Re: mass bias location
« Reply #1 on: October 21, 2004, 05:58:56 AM »
The affect that Mass Bias has on ball reaction is based on the angle that it is at in relation to the Pin and PAP. Here is a link that shows what I mean and explains how the different points affect reaction with a chart.

http://www.bowlingknowledge.com/tips/mario/mario_315degreelayout.htm

Remember pin placement has a bigger affect on reaction and mass bias is for fine tuning the reaction shape, you will see a bigger difference with asymetrical balls due to the stronger mass bias.
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STORMIN1

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htotheizzo3561

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Re: mass bias location
« Reply #2 on: October 21, 2004, 10:17:27 PM »
I as well as my ball driller and several others really don't worry about MB.  The difference can only be seen if you are a higher caliber player.
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Strider

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Re: mass bias location
« Reply #3 on: October 22, 2004, 12:17:31 AM »
quote:
I as well as my ball driller and several others really don't worry about MB.  The difference can only be seen if you are a higher caliber player.


Sorry, don't believe it.  Take two balls with the pin in the same place.  Kick one CG left (mb in track) and another right (mb near VAL) and tell me you don't see two very different reactions.  The link that Stormin1 provided gives good information.
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J_Mac

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Re: mass bias location
« Reply #4 on: October 22, 2004, 01:52:24 AM »
quote:


Throw another stacked cg.,..and all three will look vastly different on the lanes.


This is especially true if it's not the great wall of china....  An easy shot is more apt to make 3 different drills on the same type of ball look quite similar.
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It's kind of hard to read the lanes if you don't know their language...
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Strider

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Re: mass bias location
« Reply #5 on: October 22, 2004, 01:57:13 AM »
Just trying to keep it simple...
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omegabowler

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Re: mass bias location
« Reply #6 on: October 22, 2004, 02:21:26 AM »
Kelp,
   to see a real noticable difference a strong MB ball is best. MoRich, HIgh end track Ball are such, maybe a few others. the Hammers blues?

Pin to pap, surface, core dynamics and MB placement work more in concert with the bolwers style to achieve a reaction with these balls.  so I'm not sure if low rev stroker will benefit but a med and higher rev player can notice a big difference in reaction with the same drill.

pin to pap will determin the amount of flair. pin hieght above or below the gripline will determine length(rg). Mb will effect the the change of direction. surface to coordinate these reactions with the lanes.

as an example I use to of the same strong MB balls I drilled. one is 4" x 4.5(MB)" with the pin 3" above grip midline. box surface. the other was a pin 2" above gripline drilled 4.5 x 5.75(MB). this placed the MB left of thumb(track side).polished

Ball one will go long but turn with a hard arc on a fresh long pattern
Ball two will not turn the corner unless there is a lot of dry. real broken down shots were needed.

My high rev friend with different pap,speed,tilt etc.. threw ball one. where as I had a hard arc it snapped for him.

so not every layout is equal if you are not a factor in it's drilling.

the best thing you can do is get real with your specs. Most bowlers over rate themselves. get an honest evaluation.

once you get a well layed out and prep MB ball they are better than any symetrical ball. get it wrong and you will hate it big time.

I find that these high tech balls are designed for a reaction and it is prety much that. the animal is an arc ball and even with a flip MB placement it still dosen't get a real sharp angle. however the flip design of the unleashed will flip( for a particle).

in gerenal a MB near in track will be a contninous arc so it has a general overall smaller ball path to the pocket ,conditions prevailing.

a MB right of thumb( between val and track) is the stronger flip area.

MB on or past the val will arc harder off the breakpoint. my favorite all around layout due to my higher axis roatation.

hope this helps.

maybe you are lucky and live close to some of the track gus, tenpinspro or Ex etc..  go to a knowledgeable driller of strong MB balls. you get the most for your dollar out of them.






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"deserves got nothing to do with it."
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"deserves got nothing to do with it."
-- William Munny

Strider

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Re: mass bias location
« Reply #7 on: October 22, 2004, 02:22:21 AM »
The MB can be placed on the negative side of any ball.  It will just add length and make the ball retain it's axis longer.  Better for up the back type releases and slower speeds, IMO.  If you come around the ball a lot, it can lead to a late breakpoint or over/under.

The "default" drilling by proshops quite often is something close to label leverage.  Pin near the ring finger, cg near the grip center, MB near the track.  Perfectly acceptable drilling.  It might negate some of the "core strength" of the stronger asymmetrics.
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