Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Suspension

Enduro Suspension Tuning & maintenance of Enduro forks, shocks, etc


Reply
 
Thread Tools Display Modes
  #1  
Old 01-29-2008, 08:10 AM
BIG TOOL BIG TOOL is offline
Member
 
Join Date: Jul 2006
Location: East Bay, CA
Posts: 67
Default Suspension oil?

Hi Guys,
I'm getting ready to change the oil in my shock, and forks. Its an '07 EC250 with the Sachs shock. LTR valved the forks, and the rear is stock. I was just wondering what weight oil to use for the job.

Thanks, 'TOOL


Reply With Quote


  #2  
Old 01-29-2008, 12:20 PM
GMP's Avatar
GMP GMP is offline
Senior Member
 
Join Date: Jul 2006
Location: Jefferson Twp., NJ
Posts: 7,597
Default

I send the shock back to Les for inspection/oil change.

For the forks what worked very well is a 50/50 mix of Honda 5w and 10w fork oil. Easy for me to get at the Honda dealer in town, but any good 7.5w should be OK if available.
Reply With Quote
  #3  
Old 01-29-2008, 06:50 PM
Dave Dave is offline
Senior Member
 
Join Date: Jul 2006
Location: StL, MO
Posts: 392
Default

You are going to need two different oils for the job.
I've used Bel Ray HVI 3wt and Spectro Ultra Light SPL in WP, Ohlins and KYB shocks with good success.
There are plenty of fork oils listed on this page:
http://www.gasgasrider.org/html/susp-oil.htm
Pick a fork oil with something around 20 to 30 cSt @ 40C viscosity and you'll be fine. If you get out in cold weather get one with a low pour point - your wrists will thank you for it.

Last edited by Dave; 01-29-2008 at 06:50 PM. Reason: typo
Reply With Quote
  #4  
Old 01-29-2008, 10:38 PM
skid jackson skid jackson is offline
Senior Member
 
Join Date: Jul 2006
Location: NH, USA
Posts: 1,057
Default

I used motorex 7.5 weight which I believe is what the manual spec is. Saves mixing thing together. Motorex is swiss so it's gotta be good stuff!! btw 7.5 is not a common weight most shiops had 5 and 10 wt on the shelf. i just lucked into a local shop that had motorex
Reply With Quote
  #5  
Old 01-30-2008, 06:50 AM
Dave Dave is offline
Senior Member
 
Join Date: Jul 2006
Location: StL, MO
Posts: 392
Default

You can't trust the labeled "wt" of suspension oil as it often doesn't correspond to the actual viscosity. For example: Torco RFF Fork 7wt, Maxima Racing 7wt and Silkolene PRO RSF 7.5wt have viscosities of 16, 27 and 37 cSt @ 40C respectively.
Reply With Quote
  #6  
Old 01-30-2008, 09:15 PM
skid jackson skid jackson is offline
Senior Member
 
Join Date: Jul 2006
Location: NH, USA
Posts: 1,057
Default

so how do you find out what you really have???
Reply With Quote
  #7  
Old 01-31-2008, 07:14 AM
GMP's Avatar
GMP GMP is offline
Senior Member
 
Join Date: Jul 2006
Location: Jefferson Twp., NJ
Posts: 7,597
Default

You need the cst specs, or just relate what you have previously used and how it feels. Without even knowing the cst specs, I can tell you that the 50/50 mix works better than BelRay 7w, which seems too heavy(stiff) to me.
Reply With Quote
  #8  
Old 01-31-2008, 07:35 AM
Dave Dave is offline
Senior Member
 
Join Date: Jul 2006
Location: StL, MO
Posts: 392
Default

A weight (wt) is a range of viscosity not a specific viscosity. Here's a couple a charts, that don't completely agree by the way, that show how various wts compare with actual viscosity.

http://www.bgprod.com/blendr/pdfs/viscosityChart.pdf

http://www.powerstrokenation.com/for...ead.php?t=1503

When it comes to selecting an oil, decide on the range and pick one from the chart. The chart is sorted by viscosity at 40 C to make fork oil selection easy. Note that there are some shock oils in the list that don't make for good fork oils. BelRay HVIs are an example (they don't contain anti-foaming agents).
Reply With Quote
  #9  
Old 02-06-2008, 01:34 PM
GMP's Avatar
GMP GMP is offline
Senior Member
 
Join Date: Jul 2006
Location: Jefferson Twp., NJ
Posts: 7,597
Default

Well the Honda dealer in town no longer has the 10w SS8, so I got some Spectro 125/150 cartridge fork fluid that is very close in ct @ 40 deg C to the SS7/SS8 mix.
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Suspension Tuning 101 MattR Enduro Suspension 3 06-21-2013 10:50 PM
More Suspension Questions smstewart Enduro Suspension 3 06-16-2009 03:04 PM
EC 200 Suspension Gas Huffer General Discussions & Announcements 3 11-13-2007 10:34 AM
Who does your suspension? thelonius Enduro Suspension 5 06-13-2007 09:14 PM
Suspension FAQ webmaster Enduro Suspension 12 09-18-2006 03:56 PM




All times are GMT -5. The time now is 03:00 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org