are these what i think?
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02-28-2006, 12:46 PM
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are these what i think?
ok, i know this may sound a little off, but keep in mind this is my first bike. On my 87' 1000 i have 2 air valves at the top of my forks near my grips. There is a sticker on my tank that says 0-6 psi. is this for raising/lowering my bike? I have seen things like this on cars and thats what it does, but i dont want to try it and it have some kind of drastic mega perfomance malfunction (lol). any and all help would be thankful.
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02-28-2006, 08:48 PM
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03-01-2006, 03:13 PM
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03-02-2006, 12:55 PM
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03-02-2006, 08:46 PM
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RE: are these what i think?
Static sag is how much the suspension moves when a rider is seated and stationery.
Preload is the amount of force it takes to initally move the suspension. It does not make the spring rate stiffer.
Ie if you have a spring rate of 1kg per mm with zero preload it will take 1kg of weight to start the suspension moving. But if you set the static sag 10mm then it will take an extra 10kg of weight to start the suspension moving. Once it starts moving it will still move at 1kg per mm no matter what the preload is. (This is one area where progressive springs are weak) . The down side to using too much preload is travel. If your bike has 130mm of travel normally and you have 10mm of preload then the spring is already compressed 10mm before you even start riding leaving you with only 120mm of travel to play with.
In sports bike the preload is adjusted by a threaded rod pushing on the spring, on the CBR1000F you can achieve the same by increasing the length of the spacer. The early models of the CBR1000f are using compressed air as a rising rate "spring" to help space out the preload.
If you want to adjust your ride height then drop the forks.
Preload is the amount of force it takes to initally move the suspension. It does not make the spring rate stiffer.
Ie if you have a spring rate of 1kg per mm with zero preload it will take 1kg of weight to start the suspension moving. But if you set the static sag 10mm then it will take an extra 10kg of weight to start the suspension moving. Once it starts moving it will still move at 1kg per mm no matter what the preload is. (This is one area where progressive springs are weak) . The down side to using too much preload is travel. If your bike has 130mm of travel normally and you have 10mm of preload then the spring is already compressed 10mm before you even start riding leaving you with only 120mm of travel to play with.
In sports bike the preload is adjusted by a threaded rod pushing on the spring, on the CBR1000F you can achieve the same by increasing the length of the spacer. The early models of the CBR1000f are using compressed air as a rising rate "spring" to help space out the preload.
If you want to adjust your ride height then drop the forks.