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post #1 of 3 (permalink) Old 08-26-03, 08:59 PM Thread Starter
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Question Basic IRS question

This has been bugging me for a while now, need a simple answer.

IRS has always been criticised for commercial vehicles such as utes for not being able to take the load of a live axle/leaf spring setup. My question is, can't you just whack stiffer springs into the IRS to achieve the same thing? Or can you simply not get stiff enough coils?

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post #2 of 3 (permalink) Old 08-26-03, 10:18 PM
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Re: Basic IRS question

IRS purpose in the big scheme of things is to imrpove ride & roadholding by reducing unsprung mass and having greater control over the movement of the wheel/tyre. It can't achieve those aims with overly stiff springs though they would improve load carrying.

If your priority is load carrying then things like ride & unsprung mass aren't as important. Your better served by live axles and cart springs.

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post #3 of 3 (permalink) Old 08-26-03, 11:59 PM
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Re: Basic IRS question

Leaf springs are able to be staged by stacking leaves of different profiles. This is able to be done in a more extreme way than any progressive rate coil.

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