Reba Fork Query.
Comments
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By your definition then, everything in a suspension fork can be considered a damper? Friction from the bushes. DAMPER! Drag from the wiper seals. DAMPER1! The stone caught between your fork brace and stanchion. DAMPER!!
To a certain extent, yes. But just not controlled.
An air spring is absolutely not a damper. It converts motion to potential energy and straight back to motion.
HEAT ?0 -
Air springs generate an absolutely tiny amount of heat relative to the energy in and out.
No mechanism is 100% efficient, there's a difference between energy losses through inefficiency and deliberate every conversion. In theory it's possible to make a 100% efficient air spring with no thermal loss. In practice it's not. The loss is almost certainly well under 1% and makes no noticeable difference. My air shock got only slightly warn after a 20km descent down a black trail in the Alps.
Did you read the link I posted? If you did you would understand why an air spring cannot have any damping. I can't explain it in any more simple terms.
If air springs have damping then why do they need a viscous damper as well?Transition Patrol - viewtopic.php?f=10017&t=130702350 -
Watch Lizard Lick towing on Dave.... 'You can't train stupid' is an oft used expression!Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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Air springs generate an absolutely tiny amount of heat relative to the energy in and out.
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SO turn motion into another form of energy AND fits your definition above.0 -
Instead of being an arse, why not try to learn from it, that is absolutely not the description you used first time around.
As it happens it's not damping as during the expansion the air cools again, also the change in temperature affects pressure and therefor spring rate, so it's far from as simple as that anyway.Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0 -
There's something I can think of which is simple.Transition Patrol - viewtopic.php?f=10017&t=130702350
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Air springs will dissipate energy as heat. Coil springs do. Bushes do. Seals do as well. But compare that to a hydraulic damper. It is there for a reason - because the other examples are not enough nor controllable for the majority of riders, with the majority of forks. In my experience. If anyone has any experience where hydraulic damping in bicycle suspension is not beneficial (and in particular adjustable damping), please enlighten me.0
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I think it's a perfectly valid distinction that converting some energy to heat is a detrimental and incidental characteristic if air springs whereas it is the primary function of the hydraulic damper. A flute and an empty drink bottle both make a noise when air resonates along their length but I don't remember seeing coke bottle listed as a part of the woodwind family.Air springs generate an absolutely tiny amount of heat relative to the energy in and out.
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SO turn motion into another form of energy AND fits your definition above.
Probably one for the kicking mule, but a coke bottle probably falls into the flute category... HTH0 -
Flutes are woodwinds, for some unknown reason.I don't do smileys.
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Parktools0 -
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[url=http://www.bikeradar.com/forums/viewtopic.php?p=19765406#p19765406]The Northern Monkey[/url] wrote:Yip, flutes and reeds are both types of woodwind instrument...
one time at.....0 -
Now you know how a steel flute can be equated to having wood - wind!Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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[url=http://www.bikeradar.com/forums/viewtopic.php?p=19765406#p19765406]The Northern Monkey[/url] wrote:Yip, flutes and reeds are both types of woodwind instrument...
one time at.....
Avoid splinters with a flute I'm guessing. ..0 -
Sorry to get back to Reba's. Merlin have got them for £229.99 plus you get another 10% at checkout. According to my calculations that's £206.99 for a new 27.5" Reba RL.
I got more than that for a two year old set on eBay recently.Transition Patrol - viewtopic.php?f=10017&t=130702350 -
A damper resists motion and applies no force when there is no motion,.
Are you just making up your own definitions to support your point?
please provide a link to the dictionary or encyclopedia you have obtain the above definition from,
The oxford English doesn't include those qualifications at all
Ive copied this down, as you have a bad habit of ignoring points when you have no answer
Please supply your definition of ''damping'' from an authoritative source, rather than just saying you have been messing about with cars for 3 decades
Don't want to tread on any ones toes, but this is the law of the land in physics and engineering.0 -
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