alternate version uploaded to remove "solid spring extrude" and correct equations when this is removed.

I have Solidworks 2016 and the model would not open.

Error in equations, looks like a sketch got left out called "Solid Spring" causing model to fail!

Really good model. Well done.

Used this to put into my Design library. Very handy

This part Allows you to set OD, wire diameter, length and number of turns. 
Edit "INPUT SKETCH" to easily configure part in base revolve. You can have...