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gear pattern check please

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Old May 8, 2009 | 09:24 AM
  #21  
01ssreda4's Avatar
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ok so we are at the general consensus that this pattern is completely acceptable?? sorry im still learning.
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Old May 8, 2009 | 10:19 AM
  #22  
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Originally Posted by 01ssreda4
ok so we are at the general consensus that this pattern is completely acceptable?? sorry im still learning.
The main thing you want is the large oval (tooth coverage) from the root to the flank like what you see in the recent pics. A perfect setup would have the ovals placed more in the center of the tooth but due to razor thin tolerances in the case, this is not always going to happen.

Having the ovals on opposite ends while still maintaining the good oval shape is still going to be acceptable assuming the ovals are still well defined. Chances are if you tried to center up the ovals by changing the pinion shims, you would lose the oval definition and tooth coverage like what is desirable.

I have had setups that looked ho hum with .022" shim and then when I went to .024" shim the oval was very well definied and usually in the center. A few thousanths can make a huge difference.
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Old May 8, 2009 | 11:08 AM
  #23  
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The pattern looks a little high in my opinion, it appears the drive pattern is off the top edge, but if you backlash is within spec, you should be good to go.

As others mentioned, this part of the pattern is not critical and many times it cannot be fixed.

Ship it !!!

Here is a link to a few gear pattern illustrations.
http://richmondgear.com/ringandpinion.pdf
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Old Oct 29, 2009 | 06:07 PM
  #24  
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So much misleading information in this thread... you have backlash, pinion depths, and preload.

Set pinion depth, ok wear pattern looks good (centered on the tooth), then backlash. 2 seperate adjustments. Backlash is adjusted by moving the ring gear either left or right, causing the pinion to either be deeper into the root of the ring or out more.
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