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 Post subject: Trying to ADT.. help me~
 Posted: Fri Sep 29, 2017 5:20 am Post Number: #1 Post
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The wiki fits me very well.
The rotation is near 450rpm and the hand is very comfortable.

I am curious to try ADT.
I received a PDF file from Slowinski.
I understand the ADT method, but I do not know one thing.

Wiki finger lateral pitch = 11˚(line A, 3/8L 1/2R I use it)
ADT ACL = 27˚ (line C, 1/4L 5/8R)

Should I change to line C in this case?
Or do you have to use existing fittings?


Last edited by bestchr on Fri Sep 29, 2017 10:00 am, edited 1 time in total.

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 Post subject: Re: Trying to ADT.. help me~
 Posted: Fri Sep 29, 2017 6:18 am Post Number: #2 Post
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bestchr wrote:
The wiki fits me very well.
The rotation is near 450rpm and the hand is very comfortable.

I am curious to try ADT.
I received a PDF file from Slowinski.
I understand the ADT method, but I do not know one thing.

Wiki finger lataral pitch = 11˚(line A, 3/8L 1/2R I use it)
ADT ACL = 27˚ (line C, 1/4L 5/8R)

Should I change to line C in this case?
Or do you have to use existing fittings?

I can only use Joe's finger pitches and ACL when using his extreme left thumb pitches. If you are using the wiki, use the wiki finger pitches. That is my observation. maybe you are different and can mix and match, but I could not do that.


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 Post subject: Re: Trying to ADT.. help me~
 Posted: Fri Sep 29, 2017 6:44 am Post Number: #3 Post
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WIKI
MF - 4 3/8 1/8F 3/8R
RF - 4 7/16 1/8F 1/2L
THUMB - 1/8R 1/16L (Maybe 0 or 1/8 left.. :D )
CLT - 11˚

ADT
MF - 4 3/8 1/8R (3/8R or 1/4R)
RF - 4 7/16 1/8R (1/2L or 5/8R)
THUMB - 0 5/8L
ACL - 27˚

Did you change the finger lateral pitch when you switched to ADT?

There is no description of the finger left and right in the PDF file.
Is your recommendation line A or line C?
I will try and fix it as recommended.

I don't know what you mean because I'm not good at English. Please fix one of them.
I want to go to the pro shop, but I am 10,000km away from the United States.
:( :( :(


Last edited by bestchr on Fri Sep 29, 2017 10:00 am, edited 1 time in total.

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 Post subject: Re: Trying to ADT.. help me~
 Posted: Fri Sep 29, 2017 7:49 am Post Number: #4 Post
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The fanchart pitches compensate for CLT angles for drillings on the centerline.

If you are drilling the fingers per ADT relative to the ACL (AKA CLT), start with balanced laterals, like 3/8 or 7/16, and linear pitch to fit the finger flex. Adjust as necessary for performance.

BTW, it's helpful to drill and fit the thumbhole first, then have the bowler insert their thumb into the ball with the centerline passing between the fingers at the second knuckle. Measure the CLT angle and draw the finger ACL. The thumbhole pitches can have a significant impact on the CLT angle, and this is a relatively simple method for getting an accurate measurement in context.

Once the ball is drilled, and a good fit confirmed, convert the drilling to T-grip measurements for subsequent balls.

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SPEED: 17mph at release
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 Post subject: Re: Trying to ADT.. help me~
 Posted: Fri Sep 29, 2017 8:17 am Post Number: #5 Post
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Thank you. I'll try.


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