I need to know the exact USGA rules for driver face spring-like effect so I can check my club before a tournament this morning
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The searches the AI actually ran for this prompt.
SEED QUERY
I need to know the exact USGA rules for driver face spring-like effect so I can check my club before a tournament this morning
2 real searches · 1 real-search pass
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ChatGPT real searches (2)
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Searches and sources
ChatGPT2 real searches · gpt-6
USGA Equipment Rules Appendix II 4c clubhead spring effect characteristic time 239 microseconds tolerance 18 official Google ↗
USGA conforming driver list CT test limit 239 257 microseconds official 2026 Google ↗
- R&A Rules Limited · assets.randa.org
- 3. All other clubs not covered by 1. and 2. (except putters) will be evaluated for spring effect solely using the Pendulum Test ¹. Clubs which have a maximum characteristic time (CT) within the impact area², in excess of 239 microseconds (plus an 18 microsecond tolerance) will be ruled non-conforming. Clubs which have a maximum characteristic time outside the impact area for a club in excess of 257 microseconds (plus an 18 microsecond tolerance) will be ruled non-conforming. · usga.org
- Recently, the USGA has measured the spring effect (CT) of some drivers which had been obtained from retail locations by the US · usga.org
- Part 2 · usga.org
- Club Head · usga.org
- USGA/R&A Conforming Driver Heads List and equipment search · randa.org
- The USGA has developed a new method to measure the spring-like effect of golf club heads · usga.org
- USGA has no plans to publish results of driver tests · reuters.com
- Conforming Club and Ball Lists · usga.org
- Rule 1 · usga.org
- Part I · usga.org
Queries
2 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
USGA Equipment Rules Appendix II 4c clubhead spring effect characteristic time 239 microseconds tolerance 18 official OBSERVED | Google ↗ AI Mode ↗ | — | Consequence | — | — | 1x of 1 | |
USGA conforming driver list CT test limit 239 257 microseconds official 2026 OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 |