Thread: Module 7 gear -- fischer price motor
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Unread 23-06-2002, 22:55
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#0047 (ChiefDelphi)
  
Join Date: May 2001
Location: Pontiac, MI
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32 DP Gear != .7 Module Gear...
Posted by Joe Johnson at 1/14/2001 1:20 PM EST


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.


In Reply to: Module 7 gear -- fischer price motor
Posted by Trevor McCulloch on 1/14/2001 12:44 PM EST:



The gear on the DRILL motor pinion has a gear that is
.7 module (each tooth adds .7 mm to the diameter). The
gear on the Fisher Price is a 32 Diametral Pitch gear
(each inch of diameter adds 32 teeth to the gear)

.7 module = 36.29 D.P.

32 D.P. = 0.794 module

DP X module = 25.4

Anyway, both are full depth gears with 20 degree
pressure angles.

The drill has 12 teeth. The Fisher Price has 16 (at
least ours do, others I consider reliable report that
sometimes get other numbers of teeth -- take yours
apart and verify the tooth count).

Joe J.



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