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post #1 of 9 (permalink) Old 05-17-2019, 01:44 AM Thread Starter
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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.
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Last edited by Bobinator; 05-20-2019 at 06:30 PM.
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post #2 of 9 (permalink) Old 05-17-2019, 06:56 AM
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Quote:
Originally Posted by Bobinator View Post
Attached is a pic of my new upper motor mount stabilizer link that is adjustable (like a turnbuckle) that I bought.

Any chance the curious could get a part number/source on that?

Scarlet Red 2010 Road Glide Custom named Trixie - She's a flashy little minx..
Basic black 1981 Tour Glide Classic named Alice - She's a sleeper project.
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post #3 of 9 (permalink) Old 05-17-2019, 07:13 AM Thread Starter
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Supporting data for continuing saga

Some of my supporting research. I read, talked, asked, surveyed, and could not believe what I found out. What is HD thinking?

Here are just two vids of many that explain things.



Working on getting part number for link, will publish ASAP.

HD Part number for adjustable stabilized link 16219-79C
Off of pre -09 touring

My secret weapon was actually 'Ralph' (works at my local HD dealer) and is my neighbor. Super smart regarding our bikes on top of being a complete racing nut job who demands the best performance from our rides. Props to Ralph for all his help!

Edit: FYI, Ralph is a member of our forum, he goes by 'GSHDRB', he is a wealth of information and is definitely one of the cool kids.

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Last edited by Bobinator; 05-20-2019 at 02:14 PM. Reason: Added part number for stablizer link
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post #4 of 9 (permalink) Old 05-17-2019, 02:31 PM
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I too would like the part number and vendor as I am running Supershox and Ohlins FKC-102. Thanks for the related videos.

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post #5 of 9 (permalink) Old 05-18-2019, 06:30 PM
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Good observations and compelling research, I too am interested in the adjustable top mount....
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post #6 of 9 (permalink) Old 05-18-2019, 09:43 PM
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post #7 of 9 (permalink) Old 05-19-2019, 10:25 AM
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Anyone use the Progressive 990 Sport shock or online black one on their 14-19 Road glides? And what length?
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post #8 of 9 (permalink) Old 05-19-2019, 10:45 AM
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I have 2018 Road Glide Special I’m 6’ @235 32 inseam and I carry a mynwode and while she is having cancer removed( 37lbs ) she went from 189 after operation to remove it to 127 now its back again and she back up in weight. So been looking at progressive 990 or ohlins Harley S36 Blackline Twin Shocks piggy back we’re it attached no separated and seek if should be heavy duty and I’m not sure are stock shocks 12 and was thinking going up a half in or inch. Thoughts and opinions on that and above?
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post #9 of 9 (permalink) Old 05-20-2019, 07:30 AM Thread Starter
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Adjustable Link

For those whom expressed an interest...

HD part number for adjustable stabilized link is 16219-79C

They are from pre -09 touring bikes. You can still find then usually about $40. Several aftermarket companies also sell similar, along with even more sophisticated stabilizing assemblies.

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