Author Topic: Rear Shock Settings ? Rough Ride !  (Read 3008 times)

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Offline Captain One Eye

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Rear Shock Settings ? Rough Ride !
« on: July 04, 2009, 09:34:00 am »
           I got my new 2002 Connie two weeks ago and I love it . I do wish it was smoother over the bumps . The front forks have the Race Tec  springs on the lowest setting and seems ok .          The rear seems very harsh . Right now I'm running 28 psi on the #2  damper setting two up . I weigh 200lbs and my Wife 140 .           The rear shock has 275 cc Mobil One 15W50 . I'm running the suggested 41 psi tire presure . Right now the bumps really jolt me and my pillion . I like a soft smooth ride .    Any suggestions ?    Thanks !    Paul  

Offline Victor Salisbury

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Rear Shock Settings ? Rough Ride !
« Reply #1 on: July 04, 2009, 09:50:00 am »
Paul, I'm wondering if you have too much fluid in the rear shock. It should be 8 ounces which is approx 235cc? At least that is how much I used when I re-did mine. I have not heard of anyone running the 15W50, I went with a 10w shock oil which was a pain to find, ended up getting some leftover from a friendly motorcycle mechanic whom I do not live by anymore.  Did you grease all the linkages also, make sure you don't have any binding.    HTH  
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Offline Jaxrider

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Rear Shock Settings ? Rough Ride !
« Reply #2 on: July 04, 2009, 06:44:00 pm »
I drained and refilled the one on my C10 with 60k miles on it and used 10w shock oil. It made a big improvement. I think the multi-vis engine oil is the problem and also too much oil. Not sure how the internals work but too much oil might not allow enough air space for the air pressure on the shock to work right. I'd drain and refill with 10w and use recommended amounts of oil and see how that works.   David in Jax COG# 7898   NE FL AAD & COG Vendor www.dreamjobresumes.com preparing resumes for COG members and friends  I ride a KAWASAKI ZZR1200   Euro Review http://www.motorbikestoday.com/reviews/Articles/ZZR1200.htm  US Review http://www.motorcyclistonline.com/roadtests/2002_kawasaki_zzr1200/inde
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Offline Eddie-FL

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Rear Shock Settings ? Rough Ride !
« Reply #3 on: July 04, 2009, 10:05:00 pm »
I would agree with replacing the oil in the shock. 15W-50 engine oil probably is not the way to go. At low temps it functions as a 15 weight oil and at high temps it acts as a 50 weight oil. I think this is your problem. Cange it out to a 10 or 20 weight fork oil and I think you'll be much happier.    Eddie  Sanford, FL  2005 Concours  1969 Triumph Bonneville  AMA# 686667 COG# 7073 CDA# 0136     http://picasaweb.google.com/Eddie753
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Offline 2linby

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Rear Shock Settings ? Rough Ride !
« Reply #4 on: July 05, 2009, 03:43:00 am »
More information than any mortal requires on suspension fluids.  But essentially you should be using a rear shcok suspension fluid in your rear shock and not fork oil as these are very different fluids designed for very different purposes.    Mobil 1 is neither. This is a motor oil not a suspension fluid. So change it out and flush it out asap.    http://www.pvdwiki.com/index.php?title=Suspension_Fluid  AKA "2linby" That's 2-lin-by folks!  Northwest Area Director  COG #5539  AMA #927779  IBA #15034  TEAM OREGON MC Instructor    http://community.webshots.com/user/2linby  http://tinyurl.com/njas8 (IBA BunBurner Gold Trip)  http://tinyurl.com/lwelx (Alaska trip)
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Offline C. Moore

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Rear Shock Settings ? Rough Ride !
« Reply #5 on: July 06, 2009, 06:20:00 am »
You can get the rear shock oil from Murph. Like the other posters said it should take about 8 oz. Good luck.  '02 Connie  COG # 6662  Dallas, Tx
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Offline GSGSXJay

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Rear Shock Settings ? Rough Ride !
« Reply #6 on: July 07, 2009, 06:05:00 am »
How about on setting #1?  I agree on the use of the shock specific oil.  It will make a BIG difference.    I think that once you change the shock oil, again, you will probably need to increase the psi setting.  28 psi seems a little low with all weight you mentioned in the initial posting.  
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Offline Captain One Eye

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Rear Shock Settings ? Rough Ride !
« Reply #7 on: July 09, 2009, 10:58:00 am »
Problem Solved .                  I put 39 psi in my rear shock this morning and it made a HUGE  difference . Now my Connie floats down the highway like it should .     It felt a little springy on the # 1 damper setting so I moved it to # 2 and that might be where I'll leave it .                My only issue  now is that my front end is a little twitchy . I think the reason is there is a new Avon Azero on back and a pretty worn Metzler on front . I plan to put the Avon Storm on front when the Metzler wears out . I'd like to do it now but I'd have trouble convincing my pillion it was really neccessary , if you know what I mean .              Thanks for all the input everybody . I wish I'd tried more air pressure three weeks ago !        Thanks again ,  Paul :)  

Offline Gene W

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Rear Shock Settings ? Rough Ride !
« Reply #8 on: July 11, 2009, 07:43:00 pm »
Paul,  Did you measure the fluid you drained out of the shock? Was it the original fill or had it been serviced before? If it was the original fill you should have replaced it with the same amount that you drained out. That is the only recommended amount that I am aware of. The amount will vary depending on how long you allow it to drain.     I drained nearly 9 OZ out of my rear shock when I serviced it at 30,000. It had not been done before.  I clamped the shock lightly in my vise at about a 45 degree angle and let it drain into a graduated cup for 24 hours.  I used Murph's kit with good results.      
« Last Edit: July 11, 2009, 07:43:00 pm by Gene W »
Gene Wilkey  COG 7755  2005 Concours  Birmingham, AL

Offline Captain One Eye

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Rear Shock Settings ? Rough Ride !
« Reply #9 on: July 11, 2009, 09:00:00 pm »
Gene asked :Paul,   Did you measure the fluid you drained out of the shock? Was it the original fill or had it been serviced before? If it was the original fill you should have replaced it with the same amount that you drained out. That is the only recommended amount that I am aware of. The amount will vary depending on how long you allow it to drain.     I drained nearly 9 OZ out of my rear shock when I serviced it at 30,000. It had not been done before.  I clamped the shock lightly in my vise at about a 45 degree angle and let it drain into a graduated cup for 24 hours.   I used Murph's kit with good results.             No , I just added air . I'll probably change the fluid this Winter .                Thanks ,  Paul