Gear Ratio Question

Reply

  #1  
Old 08-30-02, 05:18 AM
trade student
Visiting Guest
Posts: n/a
the_tow_guy Thanks..1 more?

If a main gear having 45 teeth is revolving at 360 RPM, then the speed of a 15 tooth pinion driving this gear is?
a) 120 RPM
b) 180 RPM
c) 1080 RPM
d) 1800 RPM

Sorry I'm so lost this is all new to me!
 
Sponsored Links
  #2  
Old 08-30-02, 09:41 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
A 45 tooth gear has 3 times as many teeth as the 15 tooth gear. So for every revolution of the 45 tooth gear, the 15 tooth gear revolves 3 times. Therefore when the 45 tooth gear turns 360 revolutions per minute, the 15 tooth gear is turning 1080 times per minute. (360 X 3 = 1080). This creates a 3:1 gear ratio since the driving gear is turning 3 times for every 1 turn of the driven gear.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes