I have been reading about this from various sources and I think this is pretty conservative chart on what gears I should select on my 3 x 9 speed bike to avoid cross chain:
Code:
+----+----+----+----+
| 11 | | | X |
+----+----+----+----+
| 13 | | | X |
+----+----+----+----+
| 15 | | X | X |
+----+----+----+----+
| 17 | | X | |
+----+----+----+----+
| 20 | | X | |
+----+----+----+----+
| 23 | X | X | |
+----+----+----+----+
| 26 | X | | |
+----+----+----+----+
| 30 | X | | |
+----+----+----+----+
| 34 | X | | |
+----+----+----+----+
| | 26 | 36 | 48 |
+----+----+----+----+
The left most column is my 9 speed, the lower row is my 3 chainrings. The X's are the ones I should be using. With this, I have only use 11 speeds. Am I being over conservative? Any other combo's are ok? I am thinking 36 X 26 should be fine.