one for anoraks..(2)
- Thread starter zen
- Start date
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rasheed
Well-Known Member
- Posts
- 1,815
- Location
- Bangladesh
Sorry, haven't a clue. But I love the "one for the anoraks, (2)"!
:hysterically_laughi
:hysterically_laughi
yes there is a "spring " rate...
its quite defined and real...
it depends upon load and psi...now the load is constent,so therefore the spring rate is dependent upon psi..(which in turn relates to ride height..)
and just to prove it arnott industries give spring rates for their air bags...so anyone know the spring rate for dunlop rrc air bags please..
(you need a new anorak
)
its quite defined and real...
it depends upon load and psi...now the load is constent,so therefore the spring rate is dependent upon psi..(which in turn relates to ride height..)
and just to prove it arnott industries give spring rates for their air bags...so anyone know the spring rate for dunlop rrc air bags please..
(you need a new anorak
)I do believe you, when you say Arnott give a spring rate...but.. the load is not constant is it? Load with driver only or driver passengers etc must be different? As the system automatically self levels the pressure within the air springs must change. Must admit I don`t now if spring rate is constant with different internal pressures or not. And am not going to guess... been proved wrong too often doing that! Look forward to someone pointing you/us in the right direction.
http://www.firestoneindustrial.com/pdfs/techrelease/How an air spring works.pdf. So, higher loads require higher pressures to maintain a steady deflection, and therefore steady height, and increased pressure changes the spring rate. Guess the Arnott figures are for a specified pressure/load? Ad because the Arnott springs are not of a constant diameter piston design they are going to have an inherently variable spring rate. Think this is one of the strong selling points of the genIII design?
Do I qualify for a new anorak yet? Guess not `cause I`ve been no help wit your original question.
Do I qualify for a new anorak yet? Guess not `cause I`ve been no help wit your original question.
Datatek
Well-Known Member
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- 46,188
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- Near Poitiers SW France
At least in part the spring rate of an airbag is defined by the air displaced by the piston on compression. The shape of the piston on Arnott Gen 3's is claimed to produce a rising rate spring effect, at least that is what it says on the Arnott site.
