Stiffer Rear Spring Availability for ESA models... - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old May 11th, 2009, 11:14 pm Thread Starter
Noob
 
ratracer's Avatar
 
Join Date: Apr 2008
Location: Vancouver, BC, CANADA
Posts: 13
Stiffer Rear Spring Availability for ESA models...

(I tried posting this in technical as well)

Just wondering if anyone out there has been able to increase the preload settings &/or has installed a stiffer spring in the rear suspension on a K-Bike with ESA.
I sent WP Suspension an email (in Europe) but would like to know if anyone on this side of the pond has ever handled something like this and where I could source a stiffer spring.

Note: I currently use the 2-up preload setting most of the time travelling solo, when I take a passenger I have to also run the dampening in Sport mode to control the bobbing etc!
I am 210 lbs & my wife is around 105 lbs & we often take luggage so I would love my base spring setting to be around what it is now in 2-Up mode.
__________________

Kris Duncan
2008 BMW K1200GT
ratracer is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old May 11th, 2009, 11:37 pm
Rookie
 
Join Date: Dec 2006
Location: Beverly Hills, CA, USA
Posts: 37
I wonder if your shock is working properly. I weigh 205 and spouse somewhere between 125 and 155 :-) and we always seem to have plenty of travel, even fully loaded. Setting the ESA at 2up with Normal damping works fine. Just a thought.

Lee
LeeKG is offline  
post #3 of 7 (permalink) Old May 11th, 2009, 11:44 pm
Rookie
 
Join Date: Dec 2006
Location: Beverly Hills, CA, USA
Posts: 37
Forgot to add that I just had the rear shock replaced under warranty. The damping seemed fine but I had some oil on the ground. The tech who worked on it said that the spring preload wasn't working - I assumed the shock damping oil was leaking but his comment made me think that spring preload is accomplished with oil??

At one point in my life I would have researched it and found out but complex bikes with extended warranties have caused me to stop caring :-).

Lee
LeeKG is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old May 13th, 2009, 2:04 pm Thread Starter
Noob
 
ratracer's Avatar
 
Join Date: Apr 2008
Location: Vancouver, BC, CANADA
Posts: 13
Yes, that was likely hydraulic oil as it appears that is what is used for the preload settings. Much like the manual 'Dial-Knob' setup that cranks preload using hydraulic pressure it appears the ESA is similar but uses an electric pump to increase hydraulic pressure & unfortunately in my case there is a limited amount of variance. (Whereas the Manual style can be cranked WAY up!

I contacted WP Suspension (who makes the suspension) and they unfortunately cannot offer me a stiffer spring as it's a 'BMW propriety' and I must go through BMW to get this... So far no luck at BMW, thankfully the parts man at my dealership is making some calls to BMW to see if there are any replacement springs... Otherwise I will have to swap it out with an aftermarket setup, or the stock non-esa setup.

Thanks for your response!

Kris Duncan
2008 BMW K1200GT
ratracer is offline  
post #5 of 7 (permalink) Old May 13th, 2009, 5:01 pm
Veteran
 
Join Date: Jun 2006
Location: , ,
Posts: 2,680
Interesting you mentioned the *spring* being soft.

Just got my MCN (US version) and on page 18 they did a brief sidebar of the K1300GT against the K1300S write-up.

They also complained about the spring being too soft on the K1300GT and preferred the ESA-I of the 1200 over the 1300 ESA-II system. They commented "That the rear suspension was oversprung and underdamped regardless of the setting, and the floaty bouncing sensation was even more pronounced on the GT." In the CycleStats section of the k1200S, they also gave the PANS to the "slightly floaty suspension feel" of the K1200S as well. PICKS for the K1200S were: Brakes, Instruments/Controls, and Attention to detail.

They didn't like the GT seat either, too low to accommodated short inseams and footpegs too far forward. Said the seat "Tilts forward too much."

Marks off on the "Backdraft from the windscreen" too.

Also mentioned, "Clutch shuddering with every start, which could easily be a peculiarity of the individual machine but, if so, didn't say anything good about quality control." Not addressed in the K1300 yet? I know, that rare Castrol oil no one can find in the U.S. is to blame (?).

"Tight twisties were not the bike's forte'" was also mentioned as the weight of the GT (100 pounds) over the K1300S they reviewed as well.

Fwiw, they listed Standard Maintenance as $824 labor + $174.06 parts = $994.06 for the K1300S. Yipes!


Mack
GMack is offline  
post #6 of 7 (permalink) Old May 14th, 2009, 4:47 pm Thread Starter
Noob
 
ratracer's Avatar
 
Join Date: Apr 2008
Location: Vancouver, BC, CANADA
Posts: 13
Cool! I'll have to check out that article! I just got a new issue of Cycle Canada today but it was another good review for the 'average tourer' out there. They really don't seem to push the bikes very hard at all but then they say at the end of the article "Few buyers would push these bikes to the limit like they did..." Haha! I hope Sport Rider takes these things out (K-S,R,GT, etc)

Anyway, just wondering if anyone has noticed how much travel there is in the Preload setting of their ESA equipped GT. LeeKG suggested I talk to the dealer about any potential service bulletins etc & my dealer will be looking at it on Saturday to see if they can see anything out of the ordinary. I suggested that the preload MAY only be travelling 2/3 of the full travel. Right now under full 2-Up setting the preload only moves approx. 12mm (1/2 inch). I've attached a photo. Does this look normal or is it indeed only tensioning a portion of its potential?

If anyone is generous enough to have a look at theirs & report their findings it would be greatly appreciated!
Attached Thumbnails
Click image for larger version

Name:	IMG_07898.JPG
Views:	44
Size:	62.9 KB
ID:	10330  

Kris Duncan
2008 BMW K1200GT
ratracer is offline  
post #7 of 7 (permalink) Old May 15th, 2009, 12:10 am
IBR# 366
 
Meese's Avatar
 
Join Date: Apr 2007
Location: Oxnard, CA, USA
Posts: 3,140
I haven't measured my preload adjustment, but I can say that after 85K miles the ESA still works as advertised. The springs are a bit weaker than new, but the preload and damping adjustments still make noticeable differences.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles and counting...
'09 Magnesium Beige Metallic K13GT, 60K miles miles and counting...
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#145, IBA# 366, MOA# 111996, SCMA# 24032

All lower 48 states plus Alaska on the K13GT in two weeks . . .

Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
Meese is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion 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
Absolutely the most detailed description of the K1200S I've come across... sinc K12/1300S 20 Jul 19th, 2014 9:04 am
1999 K1200RS brake pads and rotors (where do you guys generally get parts?) donnatello K1200RS/GT (Classic) 34 Nov 12th, 2009 4:17 am
Stiffer Spring for Rear with ESA? ratracer Technical, Repair and Maintenance 1 May 13th, 2009 11:36 am
The new ESA-II explained - long Moronic K12/1300GT (Next Gen) 3 Oct 13th, 2008 8:50 pm
rear brake noise 03k12rs AugWest K1200RS/GT (Classic) 8 Oct 2nd, 2008 7:37 pm

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