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The more I think about this, the more I'm convinced that an air bag would last longer and be easier to install. The constant jarring from road irregularities would beat the seals out of the cylinder in nothing flat. An airbag would take a lot more pounding than a hydraulic cylinder and still do what you want, and be cheaper too.
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Here's one of those times I ZERO PCT agree with Eric.
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The seals in a hydralic cylinder being beaten: what do you think a shock absorber is? Also, we're talking about a T-L Packard being driven around, not an off road vehicle.
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Air bags: The 50s Caddys had them and they were notorious for leaks. Even if the modern ones do not leak, they would <b>add spring rate to the T-L system</b>, completely messing up the ride quality, maybe the handling.
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For the same force (approx 1,000lb), the hydraulic cylinder can be 1/10th the diameter, so installation would be easier, not harder.
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Also, I would not use a Pancake cylinder, nor try to piggy back off the existing power steering pump.
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Craig
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