Join Date: Dec 2015
Location: Northern New Jersey
The different length shock saga continues…
I have posted on this issue several times recently because it is dazzling me and continues to. Part of the following was a response to 'Stumbled into Ohlins', sorry for the duplication, but for those who read my previous tomes on the issue, the saga continues.
My stock shocks were just over ¼” different in length when I removed them, but my new ones were installed at almost the same length. Here is an update.
It is sometimes said that Rushmore models have shocks that are a different length. Do we know if they come that way from the factory when new? In that case do they have a different mount point length dimension as a design? Sounds a little goofy. Suppose…what if one of the shocks was changing length over time as the bumper inside moved and the whole motor moved? This could be caused by the differential in the two shocks, one being a shock with rebound damping adjustment (valve-ing), the other just a slave spring allowing the whole motor to shift on its rubber mounts. Not to mention, the bike sits slightly to one side when it’s on it's jiffy stand with more weight on one side then the other. It’s a BS system. It somewhat defies logic that our swingarm could be slightly sideways and not parallel to the ground right? Also it seems that the length difference continues to change over time/weight. Checked with several people that removed the stock units and you will see a length difference between bikes. Again WTF?
I own a 2016 RGS with 18K on the clock and decided to upgrade shocks (to Ohlins 157's length adjustable). I ride two-up 85% of the time. When I removed my shocks, they were just over 1/4" different in length (see pic). What? I remembered the last tire change I made, the rear tire was worn a lot more on one side then the other, like all I do is make left turns? What?
When installing my new shocks, I was counseled to put the right shock on first, then adjust the length of the left to fit. That is what everyone said. That too blew my mind. What if your shocks are not length adjustable? Then one side will be loaded more than the other to begin with. The sag adjustment would be different depending on what side you were measuring. How to set sag in that case? What? Didn’t get it. What do you non-adjustable Super Shox peeps do if you have different length sides?
Nevertheless continued to do a lot of research on the issue and found a company in Ca. that developed and sells a frame straightening device for shops and dealers (too expensive for a home type thing) and a very knowledgeable guy. What I did learn is how to somewhat fix my shock height/length difference. Attached is a pic of my new upper motor mount stabilizer link that is adjustable (like a turnbuckle) that I bought. I installed it at the same length as was my stock unit. I removed my shocks, shook the swingarm up and down a few times, then started to adjust the length of the stabilizer arm. I measured bolt hole to bolt hole length on each side with my homemade length checker (a piece of wire hanger and a zip tie, pic attached). Wouldn’t you know it, the swingarm started to straighten out. I was able to get my shock lengths back to within a 1/16” of each other or practically the same length for each side. To really do the job correctly, I should also replace the four rubber donut things that the motor is mounted to (#8 and 11 on attached pics). Nevertheless, I’m now riding more true.
BTW, my understanding is that the shock ‘difference’ is still acceptable according to HD but again WTF? AND, now my old shocks are for sale, should anybody need two different length shocks...oh boy.
Really, this whole issue is killing me. Fortunately, Mrs. Bobinator has adjusted my meds and I have climbed back from the ledge I was on. I'm Polish and proud, and there is a long history of Polish people trying to jump out of basement windows when the going gets tuff. Amen.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Last edited by Bobinator; 05-20-2019 at 06:30 PM.