Nitrgen charge rear shock - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 Old 03-13-2016, 03:09 PM Thread Starter
Neutral
 
Join Date: Dec 2013
Posts: 3
Nitrgen charge rear shock

I am new here so please don't get made if I ask a stupid question. I see a lot of threads on adding air to front forks or bleed air off, but I don't see any thing on the rear shock. I just put a stronger spring on my rear shock. When doing this I saw the air chuck (like on top of front forks ) on the rear shock. I was thinking it looked like the old dirt bikes that we would have them charged with nitrogen. Is that what the air chuck is for or am I suppose to bleed off the air? If I do need to put nitrogen in it how munch do I need?
Thanks for any help
sjames32 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 03-13-2016, 11:22 PM
4th Gear
 
Join Date: Oct 2013
Location: Chilliwack, BC, Canada
Posts: 1,481
This was posted by a member of another group some years ago. It served me as a good reference so might help?

file:///C:/Users/Norm/Dropbox/MOTORCYC/KLR650/Suspension/How%20to%20Rebuild%20the%20KLR650%20Monoshock.htm
Normk is offline  
post #3 of 12 Old 03-14-2016, 08:14 AM
5th Gear
 
Join Date: Jan 2011
Posts: 4,228
Link doesn't work for me, Normk.
Damocles is offline  
 
post #4 of 12 Old 03-14-2016, 02:09 PM
1st Gear
 
bsklr's Avatar
 
Join Date: Nov 2014
Location: South Eastern PA
Posts: 94
The rebuild your KLR650 monoshock document that Norm makes available is still posted on the net at

How to Rebuild the KLR650 Monoshock

though I thoroughly detest Tripod and would only pull up a Tripod page in Firefox with NoScript running in Sandboxie. YMMV.

For myself only, I decided to ante up the samolians for a new progressive shock to avoid lost sweat and religion.

The key phrase which occurs at close to the end of the procedure in that document is:

"Take the rebuilt shock to a dealer or suspension shop be charged with 150 psi of dry nitrogen."
Normk likes this.
bsklr is offline  
post #5 of 12 Old 03-14-2016, 02:10 PM
4th Gear
 
Join Date: Oct 2013
Location: Chilliwack, BC, Canada
Posts: 1,481
I don't have time to deal with the issues and since there have been other versions on line, a search should show them. I haven't bothered to do my own photos of the procedures because there are lots of good ones online.
Normk is offline  
post #6 of 12 Old 03-14-2016, 02:11 PM
4th Gear
 
Join Date: Oct 2013
Location: Chilliwack, BC, Canada
Posts: 1,481
Very much appreciated! We must have been typing at the same time but you are quicker.



Quote:
Originally Posted by bsklr View Post
The rebuild your KLR650 monoshock document that Norm makes available is still posted on the net at

How to Rebuild the KLR650 Monoshock

though I thoroughly detest Tripod and would only pull up a Tripod page in Firefox with NoScript running in Sandboxie. YMMV.

For myself only, I decided to ante up the samolians for a new progressive shock to avoid lost sweat and religion.

The key phrase which occurs at close to the end of the procedure in that document is:

"Take the rebuilt shock to a dealer or suspension shop be charged with 150 psi of dry nitrogen."
Normk is offline  
post #7 of 12 Old 03-14-2016, 02:38 PM
1st Gear
 
bsklr's Avatar
 
Join Date: Nov 2014
Location: South Eastern PA
Posts: 94
"At a tortoise-like pace", Tom would say slowly.

As for the forks, atmospheric pressure. If your forks need help they need something other than the maximum 2 lbs of air pressure I might add.

Air is a crutch. Though most other people with more experience will quiet me down, while I will mumble to myself, "air is a crutch.", he said lamely.

If it's been more than two years with the present oil in the forks start by cleaning things out and replacing the oil with fresh stuff (according to the destructions in the service manual.)

There's a long list of modifications that people make to alleviate dive and other unwanted reactions from the front suspension, and how far you have to go depends on you, your load, your riding style, where your ride, and what's in your wallet.

Progressive springs, heavier oil, changing the spacer length, changing the oil height, fork brace, etc. (make one change at a time) satisfy some people while others will end up with wanting better. Some people claim no problem with putting in more air than I would. Others spend bux$ on cartridge emulators, straight springs tuned to their weight and use, and lighter fork oil. There are a lot of variables and a lot of knowledge to gain, and if completely on your own--a lot of wrenching and experimentation and wallet searching to wade through.

If your stature is American average, try progressive springs and +5 wt heavier oil to start. If MX is in your past, that probably won't do it.

If you get to the point where you are willing to spend serious dollars, Cogent Dynamics is as good as everybody says they are.
bsklr is offline  
post #8 of 12 Old 03-16-2016, 02:22 AM Thread Starter
Neutral
 
Join Date: Dec 2013
Posts: 3
Ok thanks for all the information guys.
So I took my shock back off. I had about 40 psi in it so I guess I will try to find some where to get 150 psi of nitrogen. I find it hard to believe that as many people that rides KLRs and complains about the weak rear shock that more people don't talk about checking the psi in the shock. Or may be it won't make that munch difference. I am hoping between the new spring and the 150 psi of nitrogen it will make a difference for me.
I really do appreciate all the good help I got from you guys.
thanks Steve
sjames32 is offline  
post #9 of 12 Old 03-16-2016, 09:44 PM
Neutral
 
Join Date: Feb 2016
Location: Calgary, AB, CANADA
Posts: 13
Many bicycle have air forks and shocks. They come with high pressure low volume hand pumps. Use one of these to charge your shock to the 150psi. This is low performance motor bike. You can use air instead of nitrogen. I assure you I thrash my mountain bike harder than my KLR and it's air shocks are fine under aggressive riding.
GringoKLR2 is offline  
post #10 of 12 Old 03-17-2016, 10:20 AM
4th Gear
 
Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,261
OK,

1) some good advice already; particularly bsklr's post (IMHO)

2) forks should be atmospheric pressure; some add air but it's a bandaid

3) shock should be charged with Nitrogen and left alone; even checking it will change the pressure due to the very low volume.

4) the stock shock is pretty bad. A proper spring to allow for the proper sag is necessary on any shock and by all means, add Nitrogen if it is low (and then leave it alone!) but don't expect any miracles. The only real "fix" for the crappy emulsion shock is to replace it with a decent aftermarket De Carbon unit....Cogent gets my vote. Whether the stocker is good enough will depend on your usage, expectations and budget.

Cheers,
Dave
DPelletier is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum 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



Similar Threads
Thread Thread Starter Forum Replies Last Post
'12 rear shock gone twowheels211 KLR & Other Motorcycle Related Discussion 3 07-03-2014 08:32 PM
Rear Shock Adjustment biglar 2008+ KLR650 Wrenching & Mod Questions 1 11-21-2012 12:59 AM
rear shock crayola KLR & Other Motorcycle Related Discussion 1 10-07-2010 08:17 AM
Rear shock klrmike 1987 to 2007 Wrenching & Mods 9 09-24-2008 08:52 AM

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