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Old 11-29-2008, 11:34 AM   #166
sandwash
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Location: Flagstaff Az
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I want change the rear shock oil to 10w and recharge with Nit to 150 PSI.I pretty much how do to it but need some help.Release nit,take spring off,undo damper adj and drain
.Do I work the shock to get all the oil out?Do i fill it up with the shock(reservoir)extended or collapsed?
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Old 11-29-2008, 11:43 AM   #167
enormiss
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Can you get all the air out like that?
I just did mine with 10 wieght but took out the rod and bladder.
Once you let out the pressure you can push in on the seal and bladder and undo the c clips.
Read this thread the other day and wish I had some spare beans to send it out...
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Old 11-29-2008, 11:47 AM   #168
sandwash
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don't need to do all that
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Old 11-29-2008, 03:45 PM   #169
NordieBoy
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Quote:
Originally Posted by sandwash
Do I work the shock to get all the oil out?Do i fill it up with the shock(reservoir)extended or collapsed?
I put some 10w in and worked it through a bit and drained it again and then filled it up.
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Old 11-29-2008, 08:40 PM   #170
redfishguide
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Sorry Rick I'm not sure I'm getting this. Does it matter which spring I use either Eibech or stock? If so I would have to make a decision.

Couldn't you just test fit with a different spring?

Also I need an address to mail out my shock.

Thanks
Jack





Quote:
Originally Posted by NC Rick
You can use any spring you want but if I have the spring, I can install it to make sure everything fits. We use a totally different spring clip and bottom clevis. I have sent out many with no spring and folks have mounted them with no problem in most cases.
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Old 02-25-2009, 06:05 AM   #171
NC Rick
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Time to do it again folks. I need the shocks here before March 9, 2009 for the full deal with ALO3 Ceramic coating.

Please RSVP
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Old 11-18-2009, 08:22 AM   #172
levity
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Cogent Dynamics "group buy" shock rebuild with ceramic coating

This is a heads-up cross-post from the DR650 mega-thread post #29321:

-------

Hi all -- any interest in having your shock rebuilt by Cogent Dynamics and having the the body hard coated?

Rick at Cogent Dynamics will rebuild your OEM shock and add damping adjustment for $399.

The standard rebuild takes about a week and provides a three-way adjustable shock: compression, rebound, and spring preload. The rework totally replaces the inner workings of the shock, only saving the body and reservoir parts. He puts in a new shaft, bottom mounting clevis, head seal, shock piston, expander ring, wear band, shims, nut, stop washer, and spring clip. He also adds a rebound adjuster system (knob, cross pin, transfer rod, needle and needle jet).

If there's enough interest (at least 4 of us) he can have the shock bodies coated as a batch job for an additional $45 each (total = $444 + shipping).

Turnaround time at his shop is about 2 weeks, but we would need to agree on a date to send the shocks to him for the batch coating procedure. Figure in another week for shipping to and from (~3 weeks total).

A new shock spring (with specified rate) can be included for an additional $75 as part of the group pruchase. Otherwise springs are $90.


Please post here and contact NC Rick by PM or phone (828-628-9025) so we can gauge interest and try to set a cut-off date.


Here's a description of the coating taken from some of his posts:

Quote:
Originally Posted by NC Rick
The ALO3 Ceramic coating is optional ($45) and is not for looks, it is a performance coating that makes the shock have less internal friction, last longer (like a LOT longer) and also helps keep the oil cleaner.

The dark gray is hard anodizing and has nothing at all to do with looks, aluminum is a soft material and a poor wear surface for the Teflon piston band to run on. What happens is a little higher friction to start, then the aluminum starts to wear and makes fine particulates enter the oil making a more abrasive slurry, causing more wear and so on. The cast aluminum body of these lower priced shocks are the worst offenders. By putting this special coating on the body, there is a 0.002" "skin" that is hard as glass and this is a very good surface with less friction and excellent wear resistance. The oil stays cleaner and the shock lasts better and works better too. the coating makes the body first class for building a new shock on. If the original body is scored or a little worn, we use a special honing process to bring the bore back into a good condition (a little like redoing a cylinder). I am not at all into bling, it's all function.


Here's a photo of the coated, rebuilt shock with an Eibach spring:

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Old 11-18-2009, 09:56 AM   #173
levity
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Group Buy on Shock Rebuild and Coating

Post "Shock Group Buy" responses in this thread.

The GROUP only applies to those who want to include the CERAMIC COATING.
Others can send their shock in at any time for the rebuild only.
Whether you include a new spring is up to you.

Five have posted interest in the main DR650 thread, so we have enough to go forward if all join in:

levity (any date is OK)
SkunkWizard
ER70S-2 (any date is OK)
Crackenback (any date is OK)
jtwind (any date is OK)

possible interest:
Mfed (depends on date)
alonzo


We need to decide on a date to send our shocks to Rick.
It will have to be a DEADLINE, because the coating is done as a batch job.

Please post your choice for the Deadline date to have your shock arrive in NC.
Coating process adds about a week, so it should be back to you in less than three weeks.

I will try to update this thread to summarize choices of dates.

levity screwed with this post 11-18-2009 at 05:51 PM
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Old 11-18-2009, 10:08 AM   #174
jtwind
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I can send mine in at any time. Just need a few hours to take it off and box it up so can accomodate whatever the bunch wants.
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Old 11-18-2009, 10:18 AM   #175
LukasM
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Quote:
Originally Posted by levity
Coating process adds about a week, so it should be back to you in less than three weeks.
I've got a stock DR shock left over if anybody wants to keep riding their bike during this time. Could ship it directly to Rick as well...
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Old 11-18-2009, 10:30 AM   #176
Mfed
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Depends on the timing, but if I can work it out I'm in on the rebuild and anodizing. Put me down for a "tentative" and I'll update when the deadline is decided upon.
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Old 11-18-2009, 10:43 AM   #177
alonzo
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Cogent Shock

Most likely I'm in. I need as much heads-up on the deadline date as possible.

-- alonzo
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Old 11-18-2009, 03:47 PM   #178
Crackenback
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Shipping deadline

My shock is already off the bike. All I'll need to do is pack it and ship it. Just need the date when he needs to have it in by. Hell, I'll just call Rick and ship it out on Friday. This way he'll have it.

BTW. I'm in for the works, rebuild, coating and spring.
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Old 11-18-2009, 05:53 PM   #179
sandwash
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Didn't want to mess with it,bought a 7.5 spring and had a local shop do it.100$,changed out spring,refilled with 10w and a charge of nit at 155 PSI.Good enough for what I do,way better ride.
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Old 11-18-2009, 08:34 PM   #180
NordieBoy
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Quote:
Originally Posted by sandwash
Didn't want to mess with it,bought a 7.5 spring and had a local shop do it.100$,changed out spring,refilled with 10w and a charge of nit at 155 PSI.Good enough for what I do,way better ride.
Have you done anything to the front?
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