This is an automatic factor that shows up when you click "Calculate" or input a working torque (Step 5). It will provide you with warnings and helpful tips to optimize your spring design. Warnings and helpful tips include:
Warning: The torque in L2 is less that the torque in L1
Tip: Your L2 must be greater than your L1. The formula for torque is: rate per degree * degrees traveled = torque load (L1 or L2) . Then your distance traveled in degrees for L2 must be greater than L1.
Warning: Your torque exceeds the max torque possible
Tip: If you need to reach a torque that takes you beyond the max torque possible you need to change your input values. Here are some options: increase the number of coils, increase the outer diameter, or increase the wire diameter.
Warning: Your Index is too small (below 4) which makes it difficult to manufacture.
Tip: In order to increase your index, you will need to increase your outer diameter or decrease your wire diameter.
Warning: Your index is too large (above 15)
Tip: In order to decrease your index you will need to decrease your outer diameter or increase your wire diameter.
Warning: Your inputs have generated invalid or negative answers
Please adjust your inputs accordingly.