Aftermarket Fork Spring Install on 2002 919 - Wrist Twisters
 
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post #1 of 4 Old 08-06-2013, 03:16 PM Thread Starter
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Aftermarket Fork Spring Install on 2002 919

Hey everybody,

My 0.85kg/mm Sonic Springs will arrive by the end of the week. The springs come with instructions, but I figured I'd pose a few questions to you guys first.

I've been looking at my old RaceTech installation instructions from when I put springs in my SV650, and it mentions that for cartridge forks with internal top-out springs, you have to measure the Set Length of the fork - distance from where spring touches the top of the cartridge and where the spacer touches the fork cap.

Here are my questions:

1. Do the 919 forks use internal top-out springs? I'm looking at photos of the cartridge and can't see any springs, so that would lead me to believe they are internal.

2. To measure Set Length, do I have to pull up on the damper rod really hard (to counteract top-out spring forces) in order to measure the actual, fully extended set length of the fork?

3. Does anyone have the exact Set Length measurement of the 2002 919 forks to save me the trouble of having to measure it myself with a tape measure?


Thanks for any help!

- LW



| '02 919 - Batcycle | '00 Suzuki SV650 |

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post #2 of 4 Old 08-06-2013, 03:46 PM
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Hey.

When I did this, I just laid out the standard spring and spacer together, and cut the new spacer from the material provided so that the new set would match the old set for length, more or less. I probably went a bit longer to lift the ride height...

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post #3 of 4 Old 08-06-2013, 04:38 PM Thread Starter
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Thx for the input. The thing is, I don't necessarily want to go by how much preload the stock setup had. So regardless of how much preload it had with the old springs, I want to set up the new springs with 15mm of preload to start. And if I feel like it's too soft, doesn't ride high enough, or has too much sag, I can always add a 5mm pvc washer.



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post #4 of 4 Old 08-06-2013, 06:00 PM
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Quote:
Originally Posted by LeatherWings View Post
Thx for the input. The thing is, I don't necessarily want to go by how much preload the stock setup had. So regardless of how much preload it had with the old springs, I want to set up the new springs with 15mm of preload to start. And if I feel like it's too soft, doesn't ride high enough, or has too much sag, I can always add a 5mm pvc washer.
This is fine, just put the springs in the tubes and measure what you will need for spacers.

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