New rear shock? Spring? Or both??? - Wrist Twisters
 
Thread Tools Display Modes
post #1 of 14 Old 05-23-2012, 06:31 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

New rear shock? Spring? Or both???

M having some issues with my Drz, as I've gotten more experience on the road I've gotten much more aggressive with my riding and it appears between my size (5'11"-200lbs) and combat style riding, my Drz's rear suspension isn't doing the job anymore, I already have the spring maxed out along with a high compression setting, Two mornings ago I ripped into a 90 near my house, it was text book! But in the middle of the curve my left toe and foot peg touched pavement!!!! It scared the shit out of me also with the new supermoto 160 on the rear, it has been rubbing on the pipe.

So I'm hoping to tap into the vast knowledge and wisdom here at WT and figure out what I need to do to solve this issue, please help!

:buell:
Whiplash97 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 Old 05-23-2012, 07:49 PM
Cornicen
 
Join Date: Nov 2009
Location: Manila, Philippines
Posts: 516
Blog Entries: 1
Rep Power: 1
 
Are you on a drz-SM or a convertion? My understanding is the dirt suspension on a conversion isnt valved for street. To get the most out of it, ive been told you need to get the forks and shock re-worked by a specialist.

Dont worry about dragging pegs...sounds like youre doin something right, dont blame the suspension. Haha!

I found a 160 too wide on the drz, it turned a lot better with a slimmer tire for me.

honda ng gingsa is offline  
post #3 of 14 Old 05-23-2012, 08:09 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by honda ng gingsa
Are you on a drz-SM or a convertion? My understanding is the dirt suspension on a conversion isnt valved for street. To get the most out of it, ive been told you need to get the forks and shock re-worked by a specialist.

Dont worry about dragging pegs...sounds like youre doin something right, dont blame the suspension. Haha!

I found a 160 too wide on the drz, it turned a lot better with a slimmer tire for me.
Thank you for the response! It's a 2008 Drz 400S, the hubs are from a 2006 Drz 400E that have been laced up on Takasago supermoto hoops, they are the same width as the SM model stock hoops and yes I guess the 160 is alittle wide the chain has too chew about 1/4 inch off it when new, the forks seem too work pretty well in most situations, it's the rear shock that seems to fall short for me, do they make heavier springs?

:buell:
Whiplash97 is offline  
 
post #4 of 14 Old 05-23-2012, 09:13 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Whiplash97 is offline  
post #5 of 14 Old 05-23-2012, 09:51 PM
`
 
zaq123's Avatar
 
Join Date: Apr 2009
Location: here n' there
Posts: 3,842
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance 
Total Awards: 17

Stock spring on drz is too soft for 200lbs. It's more like for 160lbs person. Stock shock spring is 5.5kg/mm. You need 5.8 for supermoto setup. Doesn't seems like a lot but it pretty significant change due to linkage setup. Also make sure you shock istill functions properly. Remove the spring, compress your shock and see if it extends by itself. If not, time to service it. Ive seen a few drz shocks that loose charge a little too soon. If its been a while, you probably want to service it while you swapping the spring.

zaq123 is offline  
post #6 of 14 Old 05-23-2012, 10:01 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by zaq123
Stock spring on drz is too soft for 200lbs. It's more like for 160lbs person. Stock shock spring is 5.5kg/mm. You need 5.8 for supermoto setup. Doesn't seems like a lot but it pretty significant change due to linkage setup. Also make sure you shock istill functions properly. Remove the spring, compress your shock and see if it extends by itself. If not, time to service it. Ive seen a few drz shocks that loose charge a little too soon. If its been a while, you probably want to service it while you swapping the spring.
Excellent! where do I get one of these elusive springs? Do I just need to find a supermoto shock and swap? And I've never serviced the shock other than cleaning it, it would just need recharged yes?

Another question: is there a shock from another bike that would be more suitable for me and compatible with the Drz?

:buell:
Whiplash97 is offline  
post #7 of 14 Old 05-23-2012, 10:11 PM
`
 
zaq123's Avatar
 
Join Date: Apr 2009
Location: here n' there
Posts: 3,842
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance 
Total Awards: 17

Drz stock shock is not as bad as you think. There is Ohlins unit for $1200 out there if you must. It's not too hard to service it however you need some equipment that you don't have. You can get the spring and ship it all to any suspension shop if you don't have on in your area. I will get back to you on the spring model #. I don't have my info in front of me right now. Let me know if you need a recommendation for the suspension shop

zaq123 is offline  
post #8 of 14 Old 05-23-2012, 10:59 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by zaq123
Drz stock shock is not as bad as you think. There is Ohlins unit for $1200 out there if you must. It's not too hard to service it however you need some equipment that you don't have. You can get the spring and ship it all to any suspension shop if you don't have on in your area. I will get back to you on the spring model #. I don't have my info in front of me right now. Let me know if you need a recommendation for the suspension shop
Ok thanks, and I found some springs and complete units not bad prices either, that sucks I never really thought about how too change the spring, have to take the damn piggy back off! I'm gonna have to invest in some tools, rebuilding and recharging these puppies would be a good service to offer in my shop

image-4045672966.jpg

:buell:
Whiplash97 is offline  
post #9 of 14 Old 05-23-2012, 11:23 PM
Cornicen
 
Join Date: Nov 2009
Location: Manila, Philippines
Posts: 516
Blog Entries: 1
Rep Power: 1
 
When i got mine it had an aftermarket eibach spring on it. I assume it was a tad stiffer. But more than just spring weight, i think its the oil flow through the valves (tuned for dirt). In my experience a 140 is perfect for the drz. A fat 160 feels like it slows the steering IMO. the drz doesnt have enough power to need or benefit from a wider tire.

The motard guys swear by david at fastbikesindustries as the sudpension guy for DRZ's.

honda ng gingsa is offline  
post #10 of 14 Old 05-23-2012, 11:34 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by honda ng gingsa
When i got mine it had an aftermarket eibach spring on it. I assume it was a tad stiffer. But more than just spring weight, i think its the oil flow through the valves (tuned for dirt). In my experience a 140 is perfect for the drz. A fat 160 feels like it slows the steering IMO. the drz doesnt have enough power to need or benefit from a wider tire.

The motard guys swear by david at fastbikesindustries as the sudpension guy for DRZ's.
Thanks Honda! But I'm not really worried about the tire size, after the carb/air mods and some fine tuning on the sprockets she can hit 101mph(digital) even packing my big ass, power isn't my main concern, I'm wanting to keep my pegs off the Tar-Mac, I'm tellin ya that freaked my out!

:buell:
Whiplash97 is offline  
post #11 of 14 Old 05-23-2012, 11:37 PM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by zaq123
Drz stock shock is not as bad as you think. There is Ohlins unit for $1200 out there if you must. It's not too hard to service it however you need some equipment that you don't have. You can get the spring and ship it all to any suspension shop if you don't have on in your area. I will get back to you on the spring model #. I don't have my info in front of me right now. Let me know if you need a recommendation for the suspension shop
You think a 5.7 would be enough? The 'ol CR500 have a 5.7 rate

:buell:
Whiplash97 is offline  
post #12 of 14 Old 05-24-2012, 03:09 AM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by Whiplash97

Ok thanks, and I found some springs and complete units not bad prices either, that sucks I never really thought about how too change the spring, have to take the damn piggy back off! I'm gonna have to invest in some tools, rebuilding and recharging these puppies would be a good service to offer in my shop
Hmm... Guess I was wrong, looks like the bottom comes off, well any way I found a 1998 XR600 spring right next door in Kelso wash. About a 10 min. ride, I can't find the rate for it and I'm not sure if it will fit but it might be worth the $30 just to have it around

:buell:
Whiplash97 is offline  
post #13 of 14 Old 05-24-2012, 04:17 AM
`
 
zaq123's Avatar
 
Join Date: Apr 2009
Location: here n' there
Posts: 3,842
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance 
Total Awards: 17

Quote:
Originally Posted by honda ng gingsa View Post
When i got mine it had an aftermarket eibach spring on it. I assume it was a tad stiffer. But more than just spring weight, i think its the oil flow through the valves (tuned for dirt). In my experience a 140 is perfect for the drz. A fat 160 feels like it slows the steering IMO. the drz doesnt have enough power to need or benefit from a wider tire.

The motard guys swear by david at fastbikesindustries as the sudpension guy for DRZ's.
if you are using your DRZ as a cruiser, 919, CBR etc yes, damping setup is wrong.
if you use your DRZ as Supermoto - damping settings are where they should be out of the box. Yes, there is always room for improvement but stock shock handles 0.3 spring rate changes as a champ with a few comp and rebound adj. changes.
If your shock is still good, put a spring and call it a day. If needs service, time to upgrade since you are half way there.
5.7 is much better than 5.5 stock. If you can get it very cheap try it out.
At 200lbs plus gear you will need 5.8 ideally

zaq123 is offline  
post #14 of 14 Old 05-24-2012, 04:30 AM Thread Starter
StormSurfer
 
Whiplash97's Avatar
 
Join Date: Apr 2012
Location: Northwest corner
Posts: 6,039
Rep Power: 1
 

Awards Showcase
Motorcycle Picture Game Award 
Total Awards: 1

Quote:
Originally Posted by zaq123

if you are using your DRZ as a cruiser, 919, CBR etc yes, damping setup is wrong.
if you use your DRZ as Supermoto - damping settings are where they should be out of the box. Yes, there is always room for improvement but stock shock handles 0.3 spring rate changes as a champ with a few comp and rebound adj. changes.
If your shock is still good, put a spring and call it a day. If needs service, time to upgrade since you are half way there.
5.7 is much better than 5.5 stock. If you can get it very cheap try it out.
At 200lbs plus gear you will need 5.8 ideally
Right thanx zaq, I'll see what I can find

:buell:
Whiplash97 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Wrist Twisters 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 Off
Pingbacks are Off
Refbacks are Off

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