Wee Strom Suspension Guinea Pig - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
V-Strom Modifications and Performance The brag page, good and bad.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 36 Old 09-12-2010, 08:01 PM Thread Starter
Stromthusiast!
 
Join Date: Aug 2008
Location: NE Ohio
Posts: 172
Wee Strom Suspension Guinea Pig

Over the next couple weeks I'm having my suspension redone by John Curea. John is pretty well known nationally for his work on dirt bike suspensions, but he's done work on street bikes too. He was also the suspension guru on ThumperTalk up until a year or two ago. I've used him a few times for work on my dirt/dual sport bikes and he's only 15 minutes from my workplace. I spoke to John a few weeks ago to see what he could do for my bike. He's going to revalve the forks (including a new piston) and install heavier springs and oil. For the rear, he's going to revalve the shock and install a heavier spring. He's also going to put the shock on the dyno before the work to get some baseline numbers.

My complaints about the stock suspension:

1) There is way too much fork dive when riding two-up (even with full preload), obviously from soft springs

2) The front is pretty harsh when riding into shape-edged bumps or potholes, with the infamous "thunk"

3) With the preload cranked all the way up in the rear, the action is a little harsh, probably from a lack of damping

4) There is too much rear sag for 2-up riding (even at full shock preload)

5) Ground clearance is limited for offroad riding (duh). I hope to get a little more by decreasing the amount of sag.

So my goal is to correct these issues without spending a fortune. I bought my Wee used and it didn't cost me a lot. I can't justify spending 40% of the bike's purchase price on suspension upgrades. I told John I want the best bang for the buck so that's what we're shooting for. I plan to post up some results here once I get the suspension parts back. I'm dropping off my forks tomorrow for phase I.

In case anyone wants to know, my bike is a 2004 DL650 with 3,200 miles. In the past 2 weeks I've added all the farkles I feel are necessary to make the DL a good dirty-adventure bike. I did this so that my rear sag numbers would not be influenced by the weight of adding more farkles later. I'm 6'3" and 220 lbs. My favorite riding is dual-sport/enduro. My other bikes at this time are a street legal Husaberg FE570 and a plated KTM 250exc. Prior bikes have included a KTM 950 Adventure, a KTM 450exc, a DRZ400S, an '03 FZ1, an '02 ZX6R, and a VX800.

Here are pics from a ride last weekend to give you an idea of some of the trails I've ridden the Strom on:














Last edited by OhioPT; 09-12-2010 at 08:04 PM.
OhioPT is offline  
Sponsored Links
Advertisement
 
post #2 of 36 Old 09-12-2010, 09:36 PM
Stromthusiast!
 
StabbyMcCutty's Avatar
 
Join Date: Jun 2009
Location: Maryland
Posts: 55
Subscribed. :lurk5:

2009 Wee-Strom ABS
StabbyMcCutty is offline  
post #3 of 36 Old 09-13-2010, 11:44 AM
Stromthusiast!
 
Join Date: Jan 2007
Location: Redmond, WA
Posts: 765
For that kind of riding, (off road, Fire / National Forest Service roads) good suspension makes such a difference. It does as well for aggressive street riding of course.

I went the spendier route with Race Tech fork mods, heaver springs and the Elka Shock. Huge different in handle the bump, ruts, washboard especially when pushing it. I'm not an real aggressive off-road rider (or street) but the better handling makes it easier to do so.

2003 V - ASV C5 Levers, Univ. Solex bars, grip heaters, ktm mirrors, c.stand, SW Mo Engine grds,Two Bros, PC3, Garmin, Givi 460, tank bag, F. Extenda, BackOff, Super Brace, Elka Shock, Race Tech Gold. AWD/Mr.Ed's Moto seat mod. Dumonde Tech Racing Oil, Spider grips, Contour.

2001 KTM LC4 farkled (sold)
awd505 is offline  
 
post #4 of 36 Old 09-14-2010, 10:49 PM Thread Starter
Stromthusiast!
 
Join Date: Aug 2008
Location: NE Ohio
Posts: 172
I dropped the forks off Monday during lunch and should have them back tomorrow. I'm hoping to ride the bike up to the Allegheny National Forest (Rocky Gap and Marienville, PA) this weekend for some trail riding. I'll post some comments about the upgrades when I get back. John said he'll take pictures of the internals while he's doing to work, so hopefully I can post those up too.
OhioPT is offline  
post #5 of 36 Old 09-15-2010, 10:46 AM
$tromtrooper
 
garandman's Avatar
 
Join Date: Mar 2007
Location: Boston, MA
Posts: 4,198
These kind of suspension upgrades make a nice bike a great bike.

Rich Desmond makes Sonic Springs, and is a well-known suspension guru in the SV and DL communities, another great resource.

2005 DL650 (sold) | 2009 DL650A (sold) | 2008 Tiger 1050 ABS | 2012 WR250R | 2008 CRF100F
garandman is offline  
post #6 of 36 Old 09-15-2010, 11:10 AM Thread Starter
Stromthusiast!
 
Join Date: Aug 2008
Location: NE Ohio
Posts: 172
Yeah, after researching this forum and ADVRider, my original plan was to go with Sonic fork springs and RT fork emulators, along with a Sasquatch shock rebuild and new spring. However, after talking to John, this may be a much better value. John also told me that the piston he's installing in the forks will provide better rebound control, which the emulators can't do. Plus, I prefer doing local business when I can. To seal the deal, John is one of the best suspension tuners in the country.

Last edited by OhioPT; 09-15-2010 at 11:13 AM.
OhioPT is offline  
post #7 of 36 Old 09-15-2010, 11:18 AM
FORUM GODFATHER.....R.I.P. PAT
 
greywolf's Avatar
 
Join Date: Jan 2006
Location: Evanston IL USA
Posts: 38,049
Garage
Piston in the fork would mean a cartridge is being used. Either he is doing a major conversion to a much better damping system or he doesn't realize the 650 has a damper rod fork and is in for a rude surprise.

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
greywolf is offline  
post #8 of 36 Old 09-15-2010, 11:33 AM Thread Starter
Stromthusiast!
 
Join Date: Aug 2008
Location: NE Ohio
Posts: 172
Quote:
Originally Posted by greywolf View Post
Piston in the fork would mean a cartridge is being used. Either he is doing a major conversion to a much better damping system or he doesn't realize the 650 has a damper rod fork and is in for a rude surprise.
No, he definately knows it's a damper rod fork (as our conversation about emulators indicated). He did say he's installing a piston of some sort. I'm used to cartridge forks, so these valving upgrades are new to me. As long as it works I'll be happy :mrgreen:
OhioPT is offline  
post #9 of 36 Old 09-15-2010, 11:49 AM
FORUM GODFATHER.....R.I.P. PAT
 
greywolf's Avatar
 
Join Date: Jan 2006
Location: Evanston IL USA
Posts: 38,049
Garage
Unless he means a cartridge emulator, a piston would involve a conversion to cartridge. Traxxion Dynamics is the only outfit I know of that does that.

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
greywolf is offline  
post #10 of 36 Old 09-15-2010, 08:58 PM Thread Starter
Stromthusiast!
 
Join Date: Aug 2008
Location: NE Ohio
Posts: 172
Quote:
Originally Posted by greywolf View Post
Unless he means a cartridge emulator, a piston would involve a conversion to cartridge. Traxxion Dynamics is the only outfit I know of that does that.
Not true. I went over to the shop this evening and John showed me what he's doing. His valving piston design is proprietary, so that's why you -or anyone else for that matter- have never seen it. He developed it about seven years ago as a solution to offer not only better compression damping, but also additional rebound damping (besides the damper rod) that you can not get from a cartridge emulator. In his opinion, emulators are "old '80's technology" and overpriced for what you get. Because they are essentially a one-way check valve, they can not offer any damping when the fork rebounds (fluid just rushes past the valve in that direction).
OhioPT 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