SPRiT  -  MX  Complex Rate Springs      -    World Premier since Mar 20,  2020


Complex Rate v4.3  =  Progressive + Linear  



I have designed these Complex rate springs to be much lighter than normal springs by 5g - 7g until the actuation point by progressive rate as Graph 1.   

The force rises by linear rate after the actuation, results in the same bottom out weight as the conventional linear springs.  

Complex rate springs are hard to find any example in the electronics industry, the production is trickier and needs lots of setups.


Please Enjoy Your World Premier Build! 

Mar 20, 2020  -  in the middle of decameronic pandemic - 



* No Polarity on Complex rate springs.  

  According to Newton,   Fab  =  - Fba 



Bottom out Force                Force ratio Before vs After actuation


63.5 C  (Actuation 43cN)  -  Force ratio  =  3 : 4   In Stock 


68 C     (Actuation 47cN)  -  Force ratio  =  3 : 4   In Stock


72 C     (Actuation 50cN)  -  Force ratio  =  3 : 4   In Stock


78 C     (Actuation 53cN)  -  Force ratio  =  3 : 4   In Stock 


For more info  >   spritdesigns.com/mx


MX Complex Rate

Bottom out Weight

    Free Return if items have serious production defects.  Free Refund before the item has shipped out. 


    Combined Shipping for any qtys of Items (Flat Rate)  :  Tracked Registered Mail $10 (7-10 days),  EMS Express (3-5 working days)

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