Author Topic: Short pin (Read 4978 times)

dougb · « **on:** March 20, 2009, 05:41:07 AM »

What is the effect a very short pin (1") on what you can do with a ball?

I recently played with a ball that was drilled pin below ring finger (slightly to the and right below) , with a 1" pin. The ball went almost straight no matter how much hand I put into it.

I'm pretty new to this stuff... just curious.

Thanks
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JohnP · « **Reply #1 on:** March 20, 2009, 02:22:04 PM »

If you don't want a balance hole you'll be limited to layouts with the pin under the fingers, unless the top weight is very low. If you don't mind a balance hole, possibly large and deep, you can do just about anything with it. -- JohnP

qstick777 · « **Reply #2 on:** March 21, 2009, 12:35:21 PM »

Similar question:

I have symmetrical ball with 1.5" pin with 2.75 top. I'm a high tracker, so I can't go with a pin low drilling.

I use longer inserts (3/4") and 1 1/4" thumb slugs. I don't mind using an x-hole if needed - would like to keep close to 1/2 finger and 1/2 side.

The way I see it, if I follow the 1" pin buffer (for warranty reasons), I'm pretty much drilling straight into the CG.

Any suggestions?

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JohnP · « **Reply #3 on:** March 21, 2009, 08:32:31 PM »

qstick777 -- One way to lay it out - put the pin 1+" to the right of and level with the RF (that keeps it in the pin safe zone) with the cg either stacked below or kicked back in toward grip center. Depending on the top weight you may need a balance hole in the finger positive quadrant, one location is on a line from grip center through the cg to the VAL. After you drill it, put two or three pieces of white tape on the proposed location and throw it to be sure the back flares don't hit it. Would have to know your PAP location to guess at the pin to PAP distance. -- JohnP

qstick777 · « **Reply #4 on:** March 21, 2009, 11:27:50 PM »

quote:
qstick777 -- One way to lay it out - put the pin 1+" to the right of and level with the RF (that keeps it in the pin safe zone) with the cg either stacked below or kicked back in toward grip center. Depending on the top weight you may need a balance hole in the finger positive quadrant, one location is on a line from grip center through the cg to the VAL. After you drill it, put two or three pieces of white tape on the proposed location and throw it to be sure the back flares don't hit it. Would have to know your PAP location to guess at the pin to PAP distance. -- JohnP

Sorry, forgot to put that in my post. PAP is either 4 7/8 x 1/2 up OR 5 1/2 x 3/8 - depends on my release (I've measured them both to be correct).

If I put the pin to the right and even with the ring finger, with the CG almost 45* towards grip center, that gives me a 2 1/2 to 3" pin to PAP.

Now that I started drawing lines I have a couple of ideas. I might go without inserts, or maybe just cut down my inserts.

My real concern is taking out too much finger weight without having enough side weight left to adjust with an x-hole. Keeping that 1" buffer and keeping the pin above fingers and still having a good pin-pap distance means I'll be drilling out the CG.

I might have to forget the 1" buffer.

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tenpinspro · « **Reply #5 on:** March 22, 2009, 11:09:44 AM »

quote:
What is the effect a very short pin (1") on what you can do with a ball?

I recently played with a ball that was drilled pin below ring finger (slightly to the and right below) , with a 1" pin. The ball went almost straight no matter how much hand I put into it.

I'm pretty new to this stuff... just curious.

Thanks

Hey doug,

A short pin helps us create an earlier roll vs a high pin. The earlier roll may be causing you to lose too much energy on the ball which in turn not have any backend motion or movement which is why it appears "straight".

Usually though, it is more a matter of matching the right cover of a ball to a lane condition so it can go thru its proper phases of skid/hook/roll. I notice you're at Dublin (which is normally a little on the drier side), I had the shop in Alameda for 11 yrs (now in San Leandro). PM me and I'll help explain in detail if you like, thanks.
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River700 · « **Reply #6 on:** March 28, 2009, 05:54:27 PM »

Dougb, I have a jolt solid with a 1 1/4 inch pin layed out 5 x 4 1/2 pin right below ring and my pap is 5 1/4 over and 1/2 inch up and it rolls in the middle part of the lane but has a nice snap at the end depending on my release. So if you try another ball with a short pin like 1 - 1 1/2 inches, try a 5 x 4 1/2 below ring, by doing that it will have some side plus some finger weight which will help it get down the lane and have a nice back end

After looking at your profile, I noticed that you don't have your speed and axis rotation and axis tilt in there. If you could supply those for us we could better help you with your questions, thanks Josh

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JimOhio · « **Reply #7 on:** April 03, 2009, 01:22:17 PM »

I have question on axis tilt and axis rotation. If I have a ball laying in my palm and my fingers are point north and I move my hande to the right, now my finger are pointing east. This called tilt or rotation? Note, I'm left handed.
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River700 · « **Reply #8 on:** April 03, 2009, 02:01:33 PM »

Jim, that would be called axis rotation.
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JimOhio · « **Reply #9 on:** April 03, 2009, 02:09:39 PM »

Thank you.
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Arsenal: http://s606.photobucket.com/albums/tt149/LeftyJimbo/?albumview=grid
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Dynamo 1 Stacked - 693 693 738
Dynamo 2 (5 x 3 1/8) - 714 710 742
Chainsaw Stacked
Chainsaw Massacre Pre-Ordered
G-Force Plugged
Gold Nugget Plugged

JohnP · « **Reply #10 on:** April 03, 2009, 03:52:27 PM »

Think of a bicycle's front wheel. If the bicycle is straight up and down, when you turn the wheel, that's axis rotation. If you lay the bicycle over to the side, that's axis tilt. And, just like when taking a turn on a bicycle you normally have some combination of both when you throw a bowling ball. -- JohnP

Author Topic: Short pin (Read 4978 times)

dougb

Short pin

JohnP

Re: Short pin

qstick777

Re: Short pin

JohnP

Re: Short pin

qstick777

Re: Short pin

tenpinspro

Re: Short pin

River700

Re: Short pin

JimOhio

Re: Short pin

River700

Re: Short pin

JimOhio

Re: Short pin

JohnP

Re: Short pin