Wilbers progressive fork springs installed, but... - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 30 Old 08-24-2006, 10:26 PM Thread Starter
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Wilbers progressive fork springs installed, but...

... the instructions were in German. The pictures were clear though, so
I really couldn't screw things up that bad.

While I notice an improvement, it's not quite what I was
expecting, having read so many posts about what an
amazing difference the springs made for other people.

Anyway... the service manual states that the springs
should be installed with the tighter pitch at the bottom of
the fork, while Wilbers' instructions include a picture and an
"achtung" stating that the springs should be installed with the
tighter pitch at the top of the fork.

I installed them per the service manual, but I'm wondering
if it really makes a difference.

2006 DL650

"We've done four already, but now we're steady and then they went one, two, three, four..."


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post #2 of 30 Old 08-25-2006, 12:06 AM
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Always go with the manufacturer. There's a reason they want the tighter pitch up top. (Don't ask me, I use Sonic Springs straight rate).

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post #3 of 30 Old 08-25-2006, 12:22 AM Thread Starter
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I went with the service manual because the stock springs
were progressive and Suzuki installed them with the tighter
pitch at the bottom.

Maybe some physics major can explain why they'd work
better installed one way versus the other. :?

2006 DL650

"We've done four already, but now we're steady and then they went one, two, three, four..."


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post #4 of 30 Old 08-26-2006, 06:28 AM
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Just put one one way and one the other. :lol: ...... :shock:

Anyway it shouldn't be too hard to swap them around.

650...Anything more than a handfull is wasted
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post #5 of 30 Old 08-29-2006, 12:57 AM
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Quote:
Originally Posted by Jonnylotto
Always go with the manufacturer. There's a reason they want the tighter pitch up top. (Don't ask me, I use Sonic Springs straight rate).
Tighter pitch should be at top so spring can get "progressively" stronger the more it's compressed. :roll:
post #6 of 30 Old 08-29-2006, 01:01 AM
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Coil bind would happen on the bottom too.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #7 of 30 Old 08-29-2006, 02:57 AM
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Quote:
Originally Posted by greywolf
Coil bind would happen on the bottom too.
Yes I agree but the tighter coil displaces more oil resulting in a higher oil level and if the new ones have a more massive tighter coil resultant oil level would be higher.
post #8 of 30 Old 08-29-2006, 08:34 AM
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Now that makes sense.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

Please vote in the poll on what Strom(s) you have at https://www.stromtrooper.com/informat...-you-have.html
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post #9 of 30 Old 08-29-2006, 03:33 PM Thread Starter
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I sent the question to Wilbers and got this reponse from Klaus Huenecke:

"No, it does not matter technically, the spring will work correctly either
way. The reason we say to install it with the tighter wound ends up is, that we want to reduce the unsprung weight on the wheel by as much as possible."

I guess I'll take them out and flip them over.

2006 DL650

"We've done four already, but now we're steady and then they went one, two, three, four..."


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post #10 of 30 Old 08-29-2006, 05:39 PM
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Since the trapped air can add a little to the resistance to compression, bound coils down could be a little stiffer since they displace more oil and the air volume is therefore smaller. The unsprung weight thing was in my mental hard drive but apparently in a bad sector. :wink:

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

Please vote in the poll on what Strom(s) you have at https://www.stromtrooper.com/informat...-you-have.html
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