Author Topic: Mass Bias strength..How Important is it? (Read 2963 times)

tenpinspro · « **on:** May 04, 2006, 04:31:12 AM »

Okay guys, here's another paragraph from the "Everything you always wanted to know about bowling but were afraid to ask" book by Rick Leong.

Mass bias strength: Let's put it in english....yes, here comes another analogy.
(Just came up with this one talking to Rock77)

I am in the front seat of my car hanging half way over a cliff (like a see-saw) going back and forth on the verge of falling over. If I move to the backseat, the rear of the car will go down and stay stable on the cliff. Go to the front and the car will fall over. Guess what I represent? Yes, mass bias. I have become the mass bias of the car (entire car equals a weightblock). Where I place myself dictates or has influence on what the entire car will do. This is the same concept of mass bias on an asymmetrical weightblock. Where we place it will cause a ball to create a certain reaction.

Now place me back in the front seat (130lbs), the car see-saws back and forth. Now let's replace me with FBM357 (350lbs, sorry Vern

) The car should go tumbling over the edge "quickly"...lol This is an example of a stronger or heavier mass bias. Replace it with a 40lb child and the car may just stay there and this represents a weak mass bias.

With this said, the stronger a mass bias is on a weightblock, the more influence it will have if placed in identical positions. So be careful about how you layout your asymmetrical pieces, just because you like the reaction of one of your mb placements doesn't mean they will all roll the same if placed in that same position. Hope this helps you understand more about our new technology and help you get your desired reaction.

PS. My last mass bias analogy using the coffee cup was stolen by an internet company on ebay, they used it on one of their tech tips about 2 weeks after I wrote it here. Let's see if they steal this too...

Your Prez
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Rock77 · « **Reply #1 on:** May 04, 2006, 01:38:23 PM »

LOL...

This analogy is great Rick. Again, thanks for your help in understanding that!

You da best Prez!!
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SteveAustin2808 · « **Reply #2 on:** May 04, 2006, 03:43:08 PM »

Hey Rick,

Your chinese and you use analogies! Well, that makes perfect sense!

Who would've thunk it?!? LOL! J/K dude!

God Bless You and have a great week!

--Michael--
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Edited on 5/4/2006 3:42 PM

Leftyhi-trak · « **Reply #3 on:** May 04, 2006, 08:25:09 PM »

Rick,

Question on your information. If i am interpretting correctly you would stating that more mass bias the quicker the reaction should occur. If that was so why are many manufacturers with high mass bias telling people not to put them on the track side of the ball?

Example - Two balls one with .014MB strength and one with .028mb strength. Higher MB ball has slightly stronger cover. If i am trying to emulate same reaction shape just utilizing difference of cover for oil capability won't i have to put the mb in a weaker position as its mb strength is 100% stronger. I am a high tracker so pushing it (mb) toward the PAP would make my reaction even earlier.

I have had minimal success with Assymet equipment and maybe i am not understanding its (mb)strengths correctly. I would appreciate any info you can provide me.

Edited on 5/4/2006 8:23 PM

Mark T. Trgovac · « **Reply #4 on:** May 04, 2006, 08:31:07 PM »

Hey rick good job giving people a better understanding. Yet the one thing i didnt understand was you are 130lbs. Wow did you eat like 8 pies before you found out your weight.
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tenpinspro · « **Reply #5 on:** May 05, 2006, 01:13:23 PM »

quote:
If that was so why are many manufacturers with high mass bias telling people not to put them on the track side of the ball?

The reasoning is that if this is a heavy spot on the core, we would be placing it on the opposite (right) side of the ball as it rolls down the lane. Well, the ball wants to hook left but if we place an influential weight (mass bias) on the right side (opposite side), it will try and pull the core the opposite direction causing it to go very straight.

Big picture sense, pin next to fingers at 1:00, mb left of thumb at 7:00, grip placed between the two. Now what we have is a controlling weight left of our hand and a controlling weight right of our hand. That to me is what I call a barbell effect (and how's a barbell roll), the weights "kind of" (I use this term very loosely) offset each other. In regards to the stronger mass bias balls released lately, that weight (mb) on the left hand side of your grip is even heavier or stronger, it will have more "influence" and can pull your track back over your gripping holes.

You have the correct understanding that a stronger mass bias ball will have more influence and react quicker than a weaker mass bias ball. Common sense should tell us that (hypothetically) 2 balls same cover, place mass bias in the same location but have different strengths (.014 and .028), the .028 should react much faster or quicker which would change the ball's breakpoint or reaction shape. If they didn't react differently, then mass bias strengths wouldn't even be an issue or something to consider when drilling. If this were true, then manufacturer's would not bother to design it or publish it.

If memory serves me right, our 2 weakest asymmetrical balls produced to date(since Del) have been the Havoc (.004) and the Robo Rule (.010). These balls should have the least effect when moving the mass bias compared to varying mass bias positions on any of our other strong asym pieces. Hope this helps explain some...or pm me and I can elaborate.

--------------------
Rick Leong - Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
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*El Presidente of the Track Revolution

FBM357 · « **Reply #6 on:** May 05, 2006, 01:27:37 PM »

Rick, your car analogy bites! ...

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Leftyhi-trak · « **Reply #7 on:** May 05, 2006, 08:51:42 PM »

Thanks Rick,

I understand your answer just find higher mass bias from companies too fickle for my taste. I have not been able to find a happy medium of strong position which has tended to burn up way to much to blowing through break on weaker positions right next to the thumb. Maybe i need to go to a weaker pin distance to achieve my needs at a stronger mb position.

P.S. - My favorite mb ball to date was the Havoc, find it funny that was the weakest mb strength ball.

tenpinspro · « **Reply #8 on:** May 06, 2006, 10:22:01 AM »

Hey lefty,

Tell me the asym balls you have now w/their current layouts and I'll try to help you with a new layout to achieve your desired reaction, thanks.
--------------------
Rick Leong - Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff
www.Trackbowling.com
www.startabowlingrevolution.com

See profile for Track Ball videos

*El Presidente of the Track Revolution

Author Topic: Mass Bias strength..How Important is it? (Read 2963 times)

tenpinspro

Mass Bias strength..How Important is it?

Rock77

Re: Mass Bias strength..How Important is it?

SteveAustin2808

Re: Mass Bias strength..How Important is it?

Leftyhi-trak

Re: Mass Bias strength..How Important is it?

Mark T. Trgovac

Re: Mass Bias strength..How Important is it?

tenpinspro

Re: Mass Bias strength..How Important is it?

FBM357

Re: Mass Bias strength..How Important is it?

Leftyhi-trak

Re: Mass Bias strength..How Important is it?

tenpinspro

Re: Mass Bias strength..How Important is it?