DR650 Shock Rebuild

P-nut · 01-14-2008, 05:43 PM

For those of you that are interested a friend has been developing a shock for the DR650. He is using the body and the spring of the stock shock. Everything else is new. It has compression, rebound, and ride height adjustments. I rode his bike last week and it was a huge improvement. I saw the biggest difference on washboards on gravel roads. I just removed my shock and we are going to rebuild it tomorrow night. He already has a completely new shock for the KLR and some Ducatis. We are going to take pictures of the whole thing. I may need some help posting them.

neepuk · 01-14-2008, 05:49 PM

Quote:

Originally Posted by P-nut

For those of you that are interested a friend has been developing a shock for the DR650. He is using the body and the spring of the stock shock. Everything else is new. It has compression, rebound, and ride height adjustments. I rode his bike last week and it was a huge improvement. I saw the biggest difference on washboards on gravel roads. I just removed my shock and we are going to rebuild it tomorrow night. He already has a completely new shock for the KLR and some Ducatis. We are going to take pictures of the whole thing. I may need some help posting them.

Sounds cool. How much do you weigh? How are you using the stock spring with any success? Just seem to me that once a soft spring, always a soft spring... Try your new shock with a new spring too, unless you're very light

.

Love to see those pix when you take them.

Rusty Rocket · 01-14-2008, 05:51 PM

I'm staying tuned to this one.

radguzzi · 01-15-2008, 05:53 PM

Quote:

Originally Posted by Rusty Rocket

I'm staying tuned to this one.

Ditto...

DRinda505 · 01-15-2008, 08:31 PM

NC Rick · 01-15-2008, 09:36 PM

It's less $$ than a poor condition Trail 90

I want one of those too1

P-nut · 01-14-2008, 06:50 PM

Quote:

Originally Posted by neepuk

Sounds cool. How much do you weigh? How are you using the stock spring with any success? Just seem to me that once a soft spring, always a soft spring... Try your new shock with a new spring too, unless you're very light

.

Love to see those pix when you take them.

I weigh 175 lbs and the stock spring rate ( .470 kg/mm) is a little more than what is recommended (0.455 kg/mm)for my weight. I got these numbers from Race Tech's website. Keep in mind, I have already ridden a DR with this shock (using the stock spring). He was previously using the gold valve kit from Race Tech.

BurnieM · 01-15-2008, 01:32 AM

Quote:

Originally Posted by P-nut

I weigh 175 lbs and the stock spring rate ( .470 kg/mm) is a little more than what is recommended (0.455 kg/mm)for my weight. I got these numbers from Race Tech's website. Keep in mind, I have already ridden a DR with this shock (using the stock spring). He was previously using the gold valve kit from Race Tech.

Are you sure that is right ?

They sound like the fork spring rates
.

P-nut · 01-15-2008, 03:47 AM

Quote:

Originally Posted by BurnieM

Are you sure that is right ?

They sound like the fork spring rates
.

Your absolutely right. I checked again. 5.4 kg/mm is the measured stock and 5.32 kg/mm is the recommended spring.

NordieBoy · 01-15-2008, 02:10 AM

Quote:

Originally Posted by P-nut

I weigh 175 lbs and the stock spring rate ( .470 kg/mm) is a little more than what is recommended (0.455 kg/mm)for my weight. I got these numbers from Race Tech's website. Keep in mind, I have already ridden a DR with this shock (using the stock spring). He was previously using the gold valve kit from Race Tech.

The stock spring rate is 6.5kg/mm for the rear shock.
Most of us in the 180lb range are using 7.6kg/mm rear.
0.47kg/mm is the recommended front spring rate for 180 odd lbs.

P-nut · 01-15-2008, 03:50 AM

Quote:

Originally Posted by NordieBoy

The stock spring rate is 6.5kg/mm for the rear shock.
Most of us in the 180lb range are using 7.6kg/mm rear.
0.47kg/mm is the recommended front spring rate for 180 odd lbs.

Can you direct me to where I can find these numbers. I've been looking at race tech's website.

http://www.racetech.com/evalving/eng...ngname=english

NordieBoy · 01-15-2008, 11:34 AM

Quote:

Originally Posted by P-nut

Can you direct me to where I can find these numbers. I've been looking at race tech's website.

http://www.racetech.com/evalving/eng...ngname=english

This was my e-mail from Jesse and when I went to the RaceTech site it came up with the same numbers.
I also wanted to see what weight you had to be to have them recommend the stock spring weight and it came out at 45kg

They must have changed the site as it now it comes up with your numbers above - Weird...

:EDIT: If you enter a 2001 bike it says it can't do shock springs and if you enter a 2000 year it comes up with my numbers.
Looks like they have different numbers in their database for different years but the actual springs on the bikes didn't change - Weirder and weirder.

Both Jesse Kientz and Norm Kouba recommended the same .47 fork and 7.6 shock springs to me.

Proteo_DR · 12-17-2011, 10:02 AM

If I rebuild my shock, it is necesary to fill with nitrogen? here it is difficult to obtain it easily, could be compressed air only?
Regads

eakins · 01-16-2008, 12:06 AM

i'm interested but also thing your spring rate is wrong.

P-nut · 01-16-2008, 04:08 AM

The stock shock.

01-14-2008, 05:43 PM	#1
P-nut ^OP Adventurer Joined: Dec 2006 Location: Asheville Oddometer: 75	DR650 Shock Rebuild For those of you that are interested a friend has been developing a shock for the DR650. He is using the body and the spring of the stock shock. Everything else is new. It has compression, rebound, and ride height adjustments. I rode his bike last week and it was a huge improvement. I saw the biggest difference on washboards on gravel roads. I just removed my shock and we are going to rebuild it tomorrow night. He already has a completely new shock for the KLR and some Ducatis. We are going to take pictures of the whole thing. I may need some help posting them. __________________ 1996 DR 650 2006 S2R 1000

01-14-2008, 05:51 PM	#3
Rusty Rocket Life behind "Bars" Joined: Dec 2005 Location: Northcentral CT Oddometer: 6,250	I'm staying tuned to this one. __________________ 1996 DR 650 (a big girl that likes it dirty) 1973 Penton Six-Days (mint) 1971 Suzuki TS185 (needs restoration) 2005 KTM 400exc w/ BajaDesigns D/S light kit

01-15-2008, 08:31 PM	#5
DRinda505 I'm right behind you. Joined: Jan 2007 Location: Land Of Enchantment Oddometer: 407	__________________ 05 DR650....Yea I know.... but it was cheap, Couldn't afford the Trail 90 I wanted.

01-15-2008, 09:36 PM	#6
NC Rick Cogent Dynamics Inc Joined: Aug 2007 Location: Asheville, NC Oddometer: 429	It's less $$ than a poor condition Trail 90 I want one of those too1 __________________ Rick Cogent Dynamics Inc. motocd.com

01-16-2008, 12:06 AM	#14
eakins Butler Maps Joined: May 2002 Location: Colorado - Fort Collins Oddometer: 14,430	i'm interested but also thing your spring rate is wrong. __________________ Butler Maps - motorcycle maps for riders by riders - Ozarks , Nor Cal , COBDR shipping, AZBDR scouting http://www.advrider.com/forums/showthread.php?t=598717 Facebook: http://www.facebook.com/butlermaps

12-17-2011, 10:02 AM	#13
Proteo_DR Adventurer Joined: Oct 2010 Location: Lima PERU Oddometer: 15	If I rebuild my shock, it is necesary to fill with nitrogen? here it is difficult to obtain it easily, could be compressed air only? Regads

01-16-2008, 04:08 AM	#15
P-nut ^OP Adventurer Joined: Dec 2006 Location: Asheville Oddometer: 75	The stock shock. __________________ 1996 DR 650 2006 S2R 1000

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: .
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode