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Old 05-25-2015, 02:07 PM   #1
JustKip OP
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Joined: Apr 2007
Location: Fresno, CA
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Spring Rates?

Bike is a new to me '14 F800GSA, with ESA

I weigh 240 in riding gear. Stock springs are rated for 170lb rider at a minimum, so I'm never going to use that 70lbs difference, and (I believe) lose something in suspension travel because of it. If I understand correctly, when setting up sag, I'm compressing that 70lbs of spring capacity in travel, right?

In shopping for aftermarket springs (thinking of lowering, to help my bum leg), I'm not noticing any different spring rates, and they're all progressive.

Wouldn't a constant spring rate, one that's sprung for MY weight, help reduce bottoming out after losing an inch of travel, and give a better ride in general?

And is anybody making them?
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Old 05-25-2015, 08:24 PM   #2
sorebutt
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Hyperpro also makes a constant spring rate.
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Old 05-26-2015, 04:33 AM   #3
Snowy
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If I interpret this right...you are concerned that in adding enough preload to suit your weight that you will lose travel?

If you weigh 240, you will never get the spring to work for you.

You may add enough preload to lift the bike to the correct sag, but it will be too lightly sprung for your weight.

Yes, in trying to achieve the correct sag you will very likely affect how much travel remains.

I have kind of the opposite problem. I have my bike fitted with a 23kg/mm rear spring. I have it set up so that fully loaded with the preload at maximum I have the sag perfect. It works very well 2 up with the compression/rebound circuit slowed right down.

I wind it back to bare minimum sag for solo riding. If I speed up the compression/rebound it can really get funky. It's sprung hard when solo. But the Ohlins has linear compression characteristics with no bottom out circuit. So it can be a hurty ride sometimes.
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Old 05-26-2015, 06:03 AM   #4
malloy
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Kip - If you are talking about the fork, look here for single rate springs:

http://racetech.com/ChooseVehicle.aspx and

http://www.sonicsprings.com/catalog/

In my experience their calculators run a little heavy but at 240 this may not be a problem.
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