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Thread: thumb 'nerve'

  1. #1
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    Default thumb 'nerve'

    So when I got the Altered Reality the PSO said my thumb pitch wasn't quite right but didn't know why it had been that way so drilled me a new insert with more pitch added to test it. Noticed today that right before release I feel a nerve 'twinge' in my thumb right at the base like it is getting pinched or something. Plan to mention it to the PSO but am going to test it with a different insert to see if it does it then too. Anyone ever experience this or have any info on it? Is it a pitch issue or maybe the insert has too sharp of an edge at the top?
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

  2. #2
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    This happened to a couple of bowlers in the family due to having poorly drilled equipment from a PSO who was otherwise locally very well regarded. One of them ended up needing surgery on their thumb. They both switched to a different PSO who made some changes to their thumb pitch and span and have had no issues since.

  3. #3
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    Quote Originally Posted by Ryster View Post
    This happened to a couple of bowlers in the family due to having poorly drilled equipment from a PSO who was otherwise locally very well regarded. One of them ended up needing surgery on their thumb. They both switched to a different PSO who made some changes to their thumb pitch and span and have had no issues since.
    In fairness to this PSO he drilled this insert up as a test to try the different pitch. Possibly if we make the pitch permanent maybe he would shorten my span a little to compensate. Just won a ball yesterday so will talk to him about it.
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

  4. #4

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    In the past, I had this problem if there was not enough bevel on the thumb hole. Bevel in... pain gone.

  5. #5
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    Quote Originally Posted by RobLV1 View Post
    In the past, I had this problem if there was not enough bevel on the thumb hole. Bevel in... pain gone.
    That could likely be it. I'm gonna see if it does it again tomorrow then swap in my old insert to see if it does it with that. If not then I know the insert is causing it so will go from there. Problem is I have a big thumb and there isn't alot of meat left around the top of the insert to grind but they should be able to bevel it a little better
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

  6. #6
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    Quote Originally Posted by boatman37 View Post
    That could likely be it. I'm gonna see if it does it again tomorrow then swap in my old insert to see if it does it with that. If not then I know the insert is causing it so will go from there. Problem is I have a big thumb and there isn't alot of meat left around the top of the insert to grind but they should be able to bevel it a little better
    The bevel can continue beyond the insert to the actual hole, it won't hurt a thing

  7. #7
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    Quote Originally Posted by Phonetek View Post
    The bevel can continue beyond the insert to the actual hole, it won't hurt a thing
    I'll take a look tomorrow. I could probably grab a piece of sandpaper and round it myself
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

  8. #8
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    So Rob may have been right. Last week before league I took my dremel and beveled the front lip a little more to round it off better and used it all night that night and no issues. Thanks Rob!
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

  9. #9
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    Quote Originally Posted by RobLV1 View Post
    In the past, I had this problem if there was not enough bevel on the thumb hole. Bevel in... pain gone.
    I chamfer the holy hell out of my thumb due to the same nerve thing. There is nothing that feels more un-nerving (no pun intended) then hitting that nerve on the first couple of shots.
    Old guy with power (15.5-16; 325). Current arsenal--Storm Summit, RotoGrip Idol Helios, Storm Phaze III, Storm SureLock (retired), Storm IQ Tour Nano and Motiv Rebel tank (spare/dry). High sanctioned game - 300 (4). High sanctioned series - 856. A.V. 300-s - 8. Longest string - 25.
    2023/2024 YTD highs--High game-289; high series-739

  10. #10
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    Quote Originally Posted by Timmyb View Post
    I chamfer the holy hell out of my thumb due to the same nerve thing. There is nothing that feels more un-nerving (no pun intended) then hitting that nerve on the first couple of shots.
    Agreed. I didn't feel it until my downswing just before I let go and when it hits it's like getting shocked. Almost want to just let go at that point.
    Arsenal "15# Global Eternity Pi-45x4.5x40" "15# 900 Global Xponent-60x4.5x40" "15# 900 Global Zen Soul-60x4.5x40" "15# Roto Grip Idol Helios-90 x 2.25 x 45" "15# 900 Global Altered Reality-50x3.625x30" "15# Brunswick Uppercut-80x3.625x35" "15# Brunswick Igniter-70x5.5x35" "15# Raw Hammer Pearl 45x5.75x40" "15# Brunswick T-Zone"
    Rev Rate about 270 @ about 15.5 MPH at the pins* High Game: 290 - High Series: 733. PAP: 5 1/8"x1" up; tilt 20*, rotation 75*. YTD highs - 290-733
    Oh, and LEFTY!!!

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