Thread: Drilling holes to reduce frame weight: best pattern
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Unread 04-03-2016, 12:00
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Re: Drilling holes to reduce frame weight: best pattern
Quote:
Originally Posted by paul.dornfeld View Post
We are reducing the weight by drilling into our 1"X4" hollow, rectangular Al tubing (1/8" thick-walled). Two questions:
  1. What would the best spacing pattern (i.e. square grid, diamond, circular, etc.?)
  2. What would the largest structurally "safe" diameter be?
1> circles are better than squares/diamonds (usually) due to stress risers.
2> before we can truly answer this we need to know the amount of force expected on the part and the direction of the expected force.
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