Drift Tengoku — October 2003

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About this issue

English draft translations are available throughout this issue. Unclear or unreadable OCR remains flagged; these drafts have not received full image proofreading. The archive retains 310 scan files, including two duplicate captures, representing 308 unique pages.

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Page 277 · English draft

Draft translation. Unclear OCR remains flagged; full image proofreading has not been performed.

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  1. Powerful torque can fully tighten wheel nuts!A full charge comfortably lasts a track day.Snap-on offered three rechargeable impact models with different battery voltages/output torques.We wanted to test endurance,the tightening/loosening torque,and how long performance lasts.Catalog figures matter,but tools prove themselves in use.If power drops after a few wheels,or a precharged battery cannot last the day,it fails as a field tool.At this price,you do not want buyer's remorse.We repeatedly fitted/removed wheel nuts with the middle-grade CTJ3450[model OCR damaged]and periodically measured torque;see graph.First,the nuts tightened with its rattling action measured14kgf-mwith a torque wrench… [continues;historical test report]
  2. Ring… [heading fragment]
  3. …gear bolts too [heading fragment]
  4. We also tried loosening ring-gear bolts tightened to15kgf-mwith CTJ3450[model OCR damaged].Even where adequate leverage would normally require fixing the assembly in a vise,the impact wrench rattled them loose.With this power,it should have many uses,especially suspension work. [OCR damaged]
  5. Plenty… [heading fragment]
  6. …of power [heading fragment]
  7. …at14kgf-m.For aluminum wheels,the generally recommended torque was described as10–12kgf-m;the writer considered this level suitable for drifting and unlikely to break bolts.After continuous removal/fitting,the battery ran out on the66th nut:13five-stud Cefiro wheels,or six sets of rear-wheel changes—enough for the day.It retained14kgf-mthrough40nuts,then gradually declined,but still held11–12kgf-mthrough60.That passed both endurance and torque-management tests,so we adopted it for the Drift Tengoku works team.The writer also recommended it for women lacking arm strength. [historical claims;OCR damaged]
  8. [Unclear: corrupted caption fragment.]
  9. You get hooked!
  10. This speed!
  11. The2.7kg weight feels solid and stable.You will be impressed how easily it rattles bolts loose.A firmly tightened wheel nut loosened in only two seconds.With such strong impact,use impact-rated sockets. [OCR damaged;historical test report]
  12. [Unclear: corrupted caption fragment.]
  13. [Unclear: corrupted caption fragment.]
  14. [Unclear: corrupted caption fragment.]
  15. 20000
  16. A drifter's impressions
  17. It seemed unfair to keep this convenience to ourselves,so we let a drifter changing tires in the adjacent pit try it. [OCR damaged]
  18. Y
  19. Resident of Kawagoe,Saitama
  20. A little…
  21. Hoshi
  22. Wow,it really is convenient!I had seen this tool before… [continues]
  23. …cheaper,and I would want one!
  24. …I thought it might over-tighten.But loosening the nuts with a cross wrench showed they were less tight than when I tighten them myself.I had been over-tightening! [OCR damaged;historical quotation]
  25. …but I had no idea it had such powerful torque.Wheel changes were over in no time!
  26. Hearing it tightened to14kgf-m,I thought that might be a bit… [continuation damaged]
  27. We checked consistency too! [OCR damaged]
  28. We ordered three impact wrenches and measured tightening torque with a torque wrench.Results:CTJ350,10V[OCR uncertain],11kgf-m;CTJ3540,14.4V,14kgf-m;CTJ3850,18V,15kgf-m.[Model/voltage OCR differs from adjacent specifications;requires review.]
  29. Tightening torque… [heading fragment]
  30. With an impact wrench,you tend to want to retighten afterward… [continues]
  31. …but with this much tightening torque,I feel I can safely drive after using it alone! [historical quoted opinion]
  32. Snap-on offers three impact-wrench models with different motor voltages.Higher voltage corresponds to stronger impacts/torque.The recently released CT…2850[model OCR damaged]has more than16kgf-mof torque! [historical specifications]
  33. Three models with different motor voltages
  34. 15
  35. kgf-m
  36. 14kgf-m
  37. Tightening torque
  38. CTJ3850:¥54,160;motor18V;charging45minutes;full-charge tightening torque16kgf-m;weight3.0kg.
  39. 10
  40. 11kgf-m
  41. 5
  42. CTJ3450tightening torque over time
  43. Reference
  44. 66nuts [OCR damaged]
  45. CTJ350:¥52,050;motor12V;charging45minutes;full-charge tightening torque11kgf-m;weight2.5kg.
  46. 10
  47. 20
  48. 30
  49. 40
  50. 50
  51. 60
  52. 70
  53. Nuts [graph unit]
  54. 273
  55. Editorial department measurements.Results may vary slightly with test conditions.
  56. One wheel nut counts as one loosening/tightening cycle.Measurements were taken in groups of ten,so treat the graph curve as approximate. [OCR damaged]
  57. Number of removal/fitting cycles