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gsmith660 gsmith660 is offline
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Join Date: Jun 2007
Location: Missouri
Posts: 4,182
Originally Posted by 911nut View Post
Hooke's law states that a spring applies a force that is linearly proportional to the distance of it's equilibrium length. In other words, take two different lengths of springs made from the same steel and wire diameter. Compress the springs to an equal distance the longer spring applies a greater force than a shorter one.
That's why longer and longer springs with the same wire diameter are used in the stock wastegate to raise the pressure at which the wastegate opens. The longer spring is crammed into the chamber above the diaphragm. Since the longer spring has been displaced a greater amount than a shorter one, the force applied by the spring to the diaphragm is greater.
That was kinda what I was thinking but didn't know where I had seen it, at one time in my life I had studied all that but it is ancient history (Navy nuclear power school) that is kinda obvious when you look at the 1 bar spring and the .8 bar spring together they are same dia. wire same number of coils but the 1 bar spring is a little bit taller.
" Porsche there is no substitute" I always liked that saying. Air cooled is the only way to go!
76 911 C.R.A.P. Gruppe #2 BIG time TURBO C.R.A.P. Bitz EFI/EDIS Now MegaSquirt 3
76 Blazer also restored by me
Old 02-20-2009, 07:33 PM
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