My Re-Spring of the S10 ES Shock

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
It's back ...


RT was able to do both spring and valve work on ES forks and shock. Hope to get everything back on the bike this weekend.

More to follow.
 

WJBertrand

Ventura Highway
Joined
Jun 20, 2015
Messages
4,534
Location
Ventura, CA
Looks great! So the are able to rebuild the OEM shock? If so that is great news as I think the non-ES shock is not rebuildable. What spring rate did you end up with?
 

tomatocity

Active Member
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
2014 Site Supporter
Joined
Mar 1, 2011
Messages
5,251
Location
Sacramento, CA USA
regulator said:
It's back ...

RT was able to do both spring and valve work on ES forks and shock. Hope to get everything back on the bike this weekend.

More to follow.
hanks for posting this.

Hopefully you can include... Specs... General cost... Time start to finish
 

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
It looks like the rebuilt ES system won’t get installed this weekend. I rode my 2012 to DC yesterday to help with the marathon, and I’m still waiting for a set of Seal Savers for the forks. I want to share the details of the rebuild now, and will update with riding impressions as soon as things are together.

The stock ES forks and shock visited Race Tech for almost a month. I figure a third of the time was shipping across the US and back. Actual time in house for evaluation and work was just over 2 weeks, and I sense that future work will turn around faster.

RT supplies a standard form to fill out with rider information. In my case: 200 lb. rider, primarily one up or one up with luggage, sport & adventure touring.

After 10 days or so, I spoke with the tech doing the evaluation of the ES system. He related that there is no issue with either the forks or the shock that prevent them from replacing springs and valves in each with appropriate springs and their gold valves. He said all the fork electronics are in the respective caps which make things easier on their end. The shock is easy to get apart (for them), and there is a stock RT spring that fits the ES shock using a collar.

Here are a few images of the returned items and setup sheet.






The shock collar is 25mm tall and the rear spring has a rate of 10.7 kg/mm (850 lb/in). It’s definitely different from Karl and Jeff’s setup. I’m not a suspension expert, so I’ll leave it to someone more versed in these things to interpret the differences for everyone.

The fork springs are .88 kg/mm. For reference, Stoltec used .90 springs when he rebuilt my 2012.

My total cost was less than $1,200.00 for the work (shipping extra). I’m not sure if it is a good budget number for others thinking about doing the same work and sent an email to RT for clarification.
 

WJBertrand

Ventura Highway
Joined
Jun 20, 2015
Messages
4,534
Location
Ventura, CA
Thanks for the details. My calculation says that 10.7kg/mm converts to 605 lb/in, so that number makes more sense to me, given that Karl and I are running 550lb/in springs. From the setup sheet, it looks like they didn't change the valving?


-Jeff
 

Karl

Active Member
Joined
Jul 18, 2015
Messages
143
Location
Sydney Australia
Looks like they did a 600lb spring with smaller diameter with custom top collar, as I said 600lb could be the way to go. This collar arrangement make sense, as mine is a pretty tight fit and would probably require them to do two collars as a commercial offering.

Waiting eagerly for your experience, particularly with the front.

K
 

WJBertrand

Ventura Highway
Joined
Jun 20, 2015
Messages
4,534
Location
Ventura, CA
fredz43 said:
Yeah, I see that under Notes, it says REVALVE.
Yep, noticed that after I posted. Surprised how light a fluid they are using in the rear shock. So with the re-valve is the adjustable damping preserved?


-Jeff
 

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
The picture reminds me that the tech mentioned each fork uses a different valve size. 25mm on one side and 20 on the other.
 

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
Quick update.

Got everything installed yesterday. Headed out for test ride today and got a suspension error when I tried to adjust the preload on the shock.

Note to self (and those who will do this after): follow the "Tip" in the service manual that says, "Before removing the rear shock absorber assembly, execute the diagnostic mode (code No. 84) to adjust the preload home position to "00." "

After figuring out how to enter diagnostic mode on gen2 bikes, the reset procedure was straight forward, and I regained preload adjustment capabilities. The sag didn't feel great, but I wanted to get out for some miles before the rain came this afternoon.

I rode about 90 miles that included some twisties and a section of the PA Turnpike outside of Philly with bad expansion joints that were cut out then improperly filled leaving multiple bumps every 30-50 meters for several miles, I believe the valving and front end are definitely better than stock. The 2014 feels similar to my 2012 with Penske/Stoltec setup with the added ability to switch on the fly to "soft" mode and make things even better on the bumpy section of the Turnpike.

I got home, measured the sag, and found that the numbers are almost identical to what they were before the spring change.... Not acceptable for me. Getting the bike higher off the ground was my primary objective for the project.

I contacted RT, who has been great to work with, and will post when I have an update from them.
 

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
This is what I did to access diagnostic mode and reset the preload. YMMV...

Key off
Hold both TCS and Reset buttons. Keep them held and turn key on (don't start the engine).
After 2-5 seconds, right side display will show ECU and SCU.
Use TCS button to toggle to SCU
Press TCS and Reset buttons simultaneously to enter SCU Diagnostics.
Use TCS button to toggle through various codes until code 84 is reached. Below the 84, either 00 or F0 will display.
Regardless of reading, hold TCS and Reset buttons for 2 seconds. The DC motor will begin to run and reset the DC motor to the single rider setting.
Once DC motor stops (less than 20 seconds?, mine ran, stopped briefly, and ran again), 00 should display under 84.
Turn off key which exits diagnostic mode.
Bike ready to start and ride.

FWIW, there are notes in the service manual about resetting the motor manually if the above procedure doesn't work.
 

WJBertrand

Ventura Highway
Joined
Jun 20, 2015
Messages
4,534
Location
Ventura, CA
regulator said:
This is what I did to access diagnostic mode and reset the preload. YMMV...

Key off
Hold both TCS and Reset buttons. Keep them held and turn key on (don't start the engine).
After 2-5 seconds, right side display will show ECU and SCU.
Use TCS button to toggle to SCU
Press TCS and Reset buttons simultaneously to enter SCU Diagnostics.
Use TCS button to toggle through various codes until code 84 is reached. Below the 84, either 00 or F0 will display.
Regardless of reading, hold TCS and Reset buttons for 2 seconds. The DC motor will begin to run and reset the DC motor to the single rider setting.
Once DC motor stops (less than 20 seconds?, mine ran, stopped briefly, and ran again), 00 should display under 84.
Turn off key which exits diagnostic mode.
Bike ready to start and ride.

FWIW, there are notes in the service manual about resetting the motor manually if the above procedure doesn't work.
Thanks for this procedure, I couldn't quite work it out from the Service Manual. One question when you press the TCS & Reset buttons after scrolling to the 84 code, do you continue holding those button down while the DC motor runs, or do you release them after the 2 second press? Thanks.
 

WJBertrand

Ventura Highway
Joined
Jun 20, 2015
Messages
4,534
Location
Ventura, CA
Rodge said:
Hi, looking into this right now... I'm kind of puzzled, part # installed is SRSP 5818107 right?
Am I right in deducting that they put a 7" long 600 lbs spring that leaves 3.46" of total travel before binding?
The spacer is on top and is > 1"?
http://www.racetech.com/page/title/SRSP-RT%20Shock%20Spring%20List
Somebody double check me...
Thanks.
That chart heading says minimum travel for the 3.54" (90mm). Not sure that means it has coil bound at that point.
 

regulator

Active Member
2014 Site Supporter
Joined
Sep 3, 2011
Messages
398
Location
Philadelphia, PA USA
WJBertrand said:
Thanks for this procedure, I couldn't quite work it out from the Service Manual. One question when you press the TCS & Reset buttons after scrolling to the 84 code, do you continue holding those button down while the DC motor runs, or do you release them after the 2 second press? Thanks.
Release after two seconds (when motor starts).
 
Top