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Old 06-22-2017, 11:01 PM   #33
Dannny B
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Join Date: Nov 2016
Location: Van Nuys, California
Posts: 186
Re: NAPCO C-50 Chevy restoration

After so many years a spring pack just turns solid. That's why Chrysler tried to run mono-leafs. Most of the newer trucks try to run mono-leaf with air bags. The old Rolls Royce had lubricated springs wrapped in leather enclosures. A lot of packs have little slippers of nylon. All of this is done to reduce inter-leaf friction. I'll probably take out 1/2 the leaves, starting at the shortest.
I have air bags on my wood-gas truck.

A company I know bought Macks for front-loader trash service. The drivers refuse to drive them because it causes so much back pain.
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