Author Topic: Drilling an Asym. Ball in Reverse? (Read 1731 times)

jbuzz31 · « **on:** June 10, 2008, 02:48:06 AM »

i was thinking the other day and got a crazy idea in my head. with some of these new asymmetrical balls coming out that have a MB of .030+ thats near as strong as the differential itself. What kind of ball reaction would you get if you reversed the pin and mass bias? IE used the MB location in laying out the ball like you would the pin and use the pin like you would the MB??? now i would think to keep it legal statically without an uber crazy weighthole you would probably need a 4"+ pin . but has anybody done this? thought about doing this? Its probably a crazy idea but i was just wondering to see what you guys think and if it would even be a viable option??
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Ive Eaten From The Insane Root That Imprisons Reason

shelley · « **Reply #1 on:** June 10, 2008, 10:51:48 AM »

You wouldn't necessarily need a large pin-out for that. You would simply measure the pin length as the distance from the MB to the CG instead of the pin to the CG. If the pin, CG, and MB are close to being in line, then a 2" pin would give you 4 3/4" from the MB to the CG. A 4" pin would give you a 2 3/4" MB-to-CG.

As to the wisdom of doing that, I don't know. I certainly am not going to spend my money to find out, but by all means, let me know what happens.

SH

dizzyfugu · « **Reply #2 on:** June 10, 2008, 11:10:05 AM »

You can achieve this with a kind of pin axis drilling - the ball will then not migrate towards its PSA, but rather around the pin. Result: weak back end, rather rolly.

It depends towards which spin axis the core stabilizes. The strongest is indicated by the pin. The mass bias is just a secondary force that helps the core orientate into a certain "direction". But you will, AFAIK, not be able to "switch" between these influences, just decide around which axis the strongest influence rotates.
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khamûl · « **Reply #3 on:** June 10, 2008, 11:30:46 AM »

inverted layouts generally place the lowest rg axis near the biggest hole...

the effects of which is to tend to smooth out backend due to the raise in rg and lowering the total diff... so less angular ball reaction overall...

also...thumpity thumpity thump...

dynamicly you are still just choosing the drilled rg that the ball will migrate around, but you will be putting the bowties of the track flare into areas not conductive to you typical semi-roller, unless you wear earplugs...

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good luck and good bowling.

jbuzz31 · « **Reply #4 on:** June 10, 2008, 11:56:08 AM »

so even if the Pin was somewhere near the thumb it would still react like a pin axis drill??
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Ive Eaten From The Insane Root That Imprisons Reason

Author Topic: Drilling an Asym. Ball in Reverse? (Read 1731 times)

jbuzz31

Drilling an Asym. Ball in Reverse?

shelley

Re: Drilling an Asym. Ball in Reverse?

dizzyfugu

Re: Drilling an Asym. Ball in Reverse?

khamûl

Re: Drilling an Asym. Ball in Reverse?

jbuzz31

Re: Drilling an Asym. Ball in Reverse?