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NMMTPA  Pretty Boy Pulling Team
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Javascript Micro-Mini Calculator

Enter the number of teeth on each gear to calculate the gear
ratio on your puller. (Enter 1 for any gear not used.) Or,
enter the gear ratio, tire diameter, and engine rpm to
calculate tire speed in inches per second:
Crank pinion/Clutch bell:  First spur gear:
Second pinion gear:  2nd spur gear:
Third pinion gear:  3rd spur gear:
Fourth pinion gear:  Final drive gear:
  Gear Ratio::1
   Tire diameter: in
   Engine Speed: rpm
  Tire Speed: in/sec

Team Resources

  • Searchable NMMTPA Rule GuideNew!
  • KRD 1001 Pro Stock Gearbox Exploded View
  • KRD 1301 SS Gearbox Exploded View
  • Cox ŻA Engines Exploded View
  • Norvel .049 Engine Exploded view
  • Printable Drill and Tap Size Chart
  • Printable Drill Diameter Table
  • Troubleshooting Cox EnginesNew!

  •   Online Resources:
  • Lite Machines Technical Bulletins - Mostly applicable to Norvel Engines   Get the free Acrobat Reader 4.0
    - Requires free Adobe Acrobat Reader download
  • Norvel's Technical Information Library

  • - Cliff Griffin's RC model airplane site
  • Tony van Roon's Hints & Tips, Construction pages
  • Build a Glowplug driver and Power Panel - by Tony van Roon
  • Build a Lead Acid Battery Charger - by Tony van Roon

  • Loctite application assistance search
  • Metal Properties calculator from Principal Metals online

  • Usenet newsgroup
  • Usenet newsgroup rec.models.rc.air
  • SMALLnet Web Page

  • More Money
    Than Looks &
    We're Broke!

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