What fork springs? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
General V-Strom Discussion Talk about all things V-Strom not limited to just one of the above models

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 59 Old 04-03-2010, 10:21 PM Thread Starter
Until we meet again
 
Dirt_Dad's Avatar
 
Join Date: Feb 2007
Location: Northern Virginia
Posts: 5,436
What fork springs?

I rode a KTM 990 Adventure today and experience good suspension. It pointed out just how poor my untouched stock front end is after 30K miles. Time to improve the ride. I've look around and found threads about how to make the change (nice job Barry), or threads saying what a great improvement it makes. What I don't see is how do I know what spring to buy. It looks like Sonic Springs are what people like, but how do you know which one is correct? I also see people like one weight of oil vs another. Again, how do you know?

I'm assuming that the fact I tip the scales at around 200 lbs full geared up has something to do with determining the correct springs. I just don't how to figure out what to get.


2019 BMW F750 GS, 2015 XT1200 ES, 2012 Yamaha XT250, 2013 Suzuki DR650
Dirt_Dad is offline  
Sponsored Links
Advertisement
 
post #2 of 59 Old 04-03-2010, 10:33 PM
Stromthusiast!
 
MZBuckeye's Avatar
 
Join Date: Dec 2006
Location: Brunswick, OH
Posts: 1,820
Hey Jon, I don't know what they do for V-Stroms, but I'm using a set of Dual Rate springs from Works Performance in the front of my Dyna, which I believe shares the same Showa front forks as the DL650. I absolutely love them, and if you call and chat, you'll see that those dudes really know their suspension. I had tons of questions, and they were extremely helpful. I want to grab a set of their rear shocks at some point. The front springs made such an amazing difference.

According to their street app guide, they make single rate springs for the DL1000.

1997 Kawasaki ZG1000 Concours, [COLOR="DarkGreen"]GREEN[/COLOR]

Old bikes:
2001 Kawasaki ZRX1200R, [COLOR="Lime"]GREEN[/COLOR], sold
2005 HD FXDCI, sold
2003 Yamaha FZ1, "Bee", sold
2005 Suzuki DL1000, Black, sold
2002 Yamaha FZ1, Silver, sold
1991 Kawasaki Ninja ZX-6D, sold
1982 Honda Sabre 750 V45, sold
MZBuckeye is offline  
post #3 of 59 Old 04-03-2010, 11:27 PM
Che
Stromthusiast!
 
Che's Avatar
 
Join Date: Jan 2009
Location: Bulverde, Tx
Posts: 55
Hey Dirt Dad... Just email Sonic Springs and they will tell you exactly what you need in terms of spring and oil weight.

Also, from what i hear a set of Race Tech Gold Valve Cartridge Emulators can really transform the overall feel of the front suspension. About $160. I plan on giving them a try here in the next month.
Che is offline  
 
post #4 of 59 Old 04-04-2010, 01:11 AM
Ex- moderator
 
Join Date: Jan 2010
Location: Manitoba
Posts: 1,131
Talk to Blair @ SV racing....

Why Motorcycles? Because Golf, Soccer, Football and Baseball only require One Ball
CollingsBob is offline  
post #5 of 59 Old 04-04-2010, 08:49 AM
$tromtrooper
 
Scarlett Harlot's Avatar
 
Join Date: Aug 2006
Location: The Islamic Republic of Ohio
Posts: 4,255
Yo DD. I talked to the good people at Sonic and it was recommended that for my 240-250 body weight and less aggressive riding style a combination of 15 wt oil and .95 springs. This was a huge improvement over the stock set up especially in warm weather. Minimal front end dive with the new springs and hardly any wallowing in the curves. During colder days the heavier oil has the dampening of a brick but when its warm its a good combo. Now that I'm 20 lbs heavier and a corner carving machine I think that maybe a .1 spring and lighter oil would work better.

'05 GL1800A-The Banana Hammock

Target fixator extraordinaire.

Never underestimate the power of stupid people in large groups. ― George Carlin

Make the world safe for stupid people and you will end up with a world full of stupid people.
Scarlett Harlot is offline  
post #6 of 59 Old 04-04-2010, 09:15 AM
Stromthusiast!
 
PhotoBiker's Avatar
 
Join Date: Sep 2008
Location: Southern Maine (USA)
Posts: 1,393
Rich Desmond from Sonic Springs is a member of this board. I wound up going with Sonic Springs. At the same time, I converted my '02 fixed cap to '07 adjustable caps. I'm still working on my bike (I just had my first ride yesterday), but can tell that there is an improvement up front.

-=Glen=-
(n1xf)

'10 R1200GS
'02 DL1000
'06 KLX250S

Check out my [URL="http://www.pbase.com/gsansoucie"]Photo A Day Gallery[/URL] or my [URL="http://www.flickr.com/photos/gsansoucie/"]Flickr Photostream[/URL]
PhotoBiker is offline  
post #7 of 59 Old 04-04-2010, 09:25 AM
$tromtrooper
 
tmcgee's Avatar
 
Join Date: Oct 2006
Location: Braintree, Massachusetts
Posts: 8,025
Quote:
Originally Posted by Dirt_Dad View Post
It looks like Sonic Springs are what people like, but how do you know which one is correct? I also see people like one weight of oil vs another. Again, how do you know?
Use the calculator on the Sonic site and play around with the parameters. It'll get you started.

-Tom (DL650AL2) (KA1TOX) (E-I-E-I-O)

This message and images are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. http://creativecommons.org
tmcgee is offline  
post #8 of 59 Old 04-04-2010, 09:27 AM
$tromtrooper
 
garandman's Avatar
 
Join Date: Mar 2007
Location: Boston, MA
Posts: 4,198
Quote:
Originally Posted by Dirt_Dad View Post
I rode a KTM 990 Adventure today and experience good suspension. It pointed out just how poor my untouched stock front end is after 30K miles. Time to improve the ride. I've look around and found threads about how to make the change (nice job Barry), or threads saying what a great improvement it makes. What I don't see is how do I know what spring to buy. It looks like Sonic Springs are what people like, but how do you know which one is correct? I also see people like one weight of oil vs another. Again, how do you know?

I'm assuming that the fact I tip the scales at around 200 lbs full geared up has something to do with determining the correct springs. I just don't how to figure out what to get.
I put in Ricor Intiminators and Sonic Springs and it makes a huge difference.

I used the Sonic calculator, but had a question so emailed Rich. He emailed me back: from Alaska.

2005 DL650 (sold) | 2009 DL650A (sold) | 2008 Tiger 1050 ABS | 2012 WR250R | 2008 CRF100F
garandman is offline  
post #9 of 59 Old 04-04-2010, 02:44 PM
What Kinda Bike Is That?
 
Black Lab's Avatar
 
Join Date: Mar 2008
Location: Mount Desert Island, Maine
Posts: 5,520
Jon, the calculator at Sonic Springs is a place to get started; but don't use it as gospel. Don't be shy about tapping into Rich's depth of personal experience. I am sure Blair would do the same for you.

Absolutely, your personal weight, all geared up is a factor. Your riding style AND the terrain you ride on, (the majority of the time), is also a factor. I know that Dirt_Mom isn't going to ride on the back of your bike, (and she certainly doesn't want to ride on the back of mine...... Funny, no one wants to.......), so you can rule that parameter out, (two up riding). Luggage and what you carry in the luggage can also be a factor.

If you are taking the time to focus on this, adding Race Tech emulators or the Ricor "thingy-ma-jiggys" is also a good measure too, (I use emulators).

This I will guarentee you, once you start fiddling with the front end, you will always try to squeeze a little more out of it.

Here was my expereince mapped out over the three years I have owned the bike, (Spring of 2007). I did the below, one step at a time just to see what changes each modification made.

Forkbrace first, (Superbrace). Made a big difference.
Sonic Springs, (.90) and 12.5wt fork oil, (50/50 mix of 10wt and 15wt)
Race Tech emulators, (and monkeying around with the preload spring. Currently, I am at 1.5 turns. The factory setting is for 2 turns.).
I also switched to 15wt oil.
I also switched to 10wt oil.
For 2010, I have switched back to the OEM springs and 10wt oil, with 1.5 turns on the emulator, preload springs. I like this setup. I would purchase lighter weight Sonic Springs, but it is an area that I can save a little money by just using the OEM springs which I still have on hand.

I should mention that I also have the forks raised 1/2" in the fork clamps.

I would also like to mention that, if you have never done any work on the front end of your bike, at the very least, you are way over due to change fork oil!!!!

And..........if you are going to spend the time on changing fork oil.........you might as well slide in some new springs.........emulators..........and maybe a set of "glide and slide" metals........and fork seals.

All of the info is available on how to do this stuff on this site.

Good Luck!

Barry

2007 DL-650 (I gave away in 2012 with 111,000 + miles)
"A word grows to a thought; a thought to an idea; an idea to an act. All the pieces are put together, and the whole is yours."
1942, Beryl Markham: "West With the Night"
"You can talk about doing a thing until everyone finally talks you out of it, or you can actually do the thing"
James Baldwin "Across Islands and Oceans"
Black Lab is offline  
post #10 of 59 Old 04-04-2010, 04:37 PM Thread Starter
Until we meet again
 
Dirt_Dad's Avatar
 
Join Date: Feb 2007
Location: Northern Virginia
Posts: 5,436
I tell ya, I am such a neanderthal on the suspension stuff. I've always just ridden a bike the way it's setup and been concerned about screwing something up and so I never make any changes. Even on my MX stuff I just ride it the way it is.

I've realized I'm overdue for the oil, so I figured I'll be in there, I'll just change the springs too. This is one of those things that I'm expecting be be a "I think it maybe made a difference...not sure." kind of change. I know the fork brace made a huge difference, but I'm taking a wait and see on this one.

Are new seals really recommended? I've seen your thread Barry and it looks like a hell of a lot more work than just a spring and oil change. To be honest that level of effort that would inspire me to hold off completely until something starts to leak and I'm forced to do it. I'm a reasonably capable wrench turner, but I really don't enjoy it.


2019 BMW F750 GS, 2015 XT1200 ES, 2012 Yamaha XT250, 2013 Suzuki DR650
Dirt_Dad is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome