Replacing springs -- did you re-insert the stock spacers? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 4 Old 04-21-2005, 03:29 PM Thread Starter
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Replacing springs -- did you re-insert the stock spacers?

I bought a set of Progressive-brand fork springs and am wondering if any of you folks who have already upgraded your front springs used the spacers that came with the Strom (I have an '04 DL1000) or inserted new spacers that may be better suited for the new springs.

If you haven't noticed already, I may not know what I'm talking about. :? Can't say I have much experience rebuilding a bike, but I am usually interested in doing something myself unless I find out it's beyond the scope of my tool set or my comfort level.

Any info you can provide is much appreciated.

(By the way, just received the Haynes manual from Mr. Howboucha. (Thanks for shipping so promptly!) Looks like a great resource.)
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post #2 of 4 Old 04-23-2005, 08:10 AM
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The preload spacers are used to set the suspension up to the riders weight, but because you can't tell what the amount of preload is prior to install it is a bit of a catch-22. Common wisdom is to set the preload to where the sag is 1/3rd of the total suspension travel when the bike is loaded with normal gear and the rider.

So with the new Progressive springs if you knew what the designed weight of the rider was or others experiences in using the same springs and their riding weight it would get you in the ballpark of the correct length. Another issue with this tuning is that the length of the spacer is not a direct coorelation between the current sag amount and the amount one is tuning for. That is, if the sag is 1" too much, adding 1" to the spacers will not give you just 1" less sag. Most often you will get much less than 1" of sag due to the progressive wound nature of the springs.

Long post later, you will probably find the Progressive spacers a better choice when shooting blind into the forks for setup. At least these two pieces were designed with the bikes weight, spring coil rate and an "average" weight rider in mind. The time I've contacted Progressive about the average rider weight I was told 170-190 lb's. if your coming in heavier than that I would add maybe .25" in length for each 20 lb's above and shorten them the same by about the same for each 20 lb's below average.

I'm having a bit of trouble sorting out the suspension on my new to me '03 1000, it has been fitted with Wilbers springs and an Ohlin's SU201 rear shock. Beautiful piece of engineering but I'm quite sure the earlier owner had no idea what he was doing with the setup unless he ran around 400 lb's and carried sheet rock on the tail rack.
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post #3 of 4 Old 04-23-2005, 10:11 AM
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I don't think the Progressive springs come with spacers, but insead they give a length to make your own. Am I mistaken?
 
post #4 of 4 Old 04-24-2005, 10:16 PM Thread Starter
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MNwilly: You're correct. An email confirmation of my order (through Motodepot.com) states that 4.25" spacers are not included for the V-Strom -- a reference apparently taken straight from the Progessive website.

BradM: Thanks for the information. Very helpful. I haven't looked inside my forks yet, but judging from the Haynes pics, the stock spacers appear to be longer... and a hack saw is one tool that I have. Assuming the spacers aren't cracked or anything, I'll give them a whirl. I think part of my questions stemmed from another comment in that email I received which said I could fabricate spacers out of PVC pipe or aluminum. If they work, they work, but the concept of fabricating anything always raises a question or two.

...now I just need to support the front of my bike so I can remove the wheel.
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