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post #1 of 9 (permalink) Old 05-14-2019, 09:50 AM Thread Starter
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Stumbled into Ohlins

Picked up the 772's from a buddy that felt they were too tall...

So, got em on my bike, an 05 roadglide. Now, I'm at the setup process.

My plan is to follow the recommended settings on sag and dampening. And once it stops raining here in New England, get em out there and adjust as needed.

Any special super secret sauce setup advice is greatly appreciated.
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post #2 of 9 (permalink) Old 05-14-2019, 06:32 PM
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Congrats. You are going to love them. Too tall? As in your buddy has short legs? He should have got blocks that push them back and down but let you enjoy the superior ride they provide. His loss is your gain.

I know nothing about an '05 but on our rushmore bikes the mount points between for the left and right shocks are a little different in length so we mount the shorter length and turn out the other shock so it slips right on.

You need two to 3 people to set up the sag correctly and rebound is a play and see once you start at the initial suggestion.

Many of us bought from @Smarty who will gladly talk us through the process while sipping margaritas while laying in his hammock on some beach, somewhere.
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post #3 of 9 (permalink) Old 05-16-2019, 01:33 PM Thread Starter
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Took her for a quick blast today. Sag is set to 30mm, and i am at the 20 click mark for the damping.

Everything everyone has said, yes.

I'm going to soften up the damping a bit. Seems a bit stiff, but maybe not. One way to find out...

So, obviously, now i have to do the fronts...
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post #4 of 9 (permalink) Old 05-16-2019, 11:55 PM
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Quote:
Originally Posted by twowheeladdict View Post
Congrats. You are going to love them. Too tall? As in your buddy has short legs? He should have got blocks that push them back and down but let you enjoy the superior ride they provide. His loss is your gain.

I know nothing about an '05 but on our rushmore bikes the mount points between for the left and right shocks are a little different in length so we mount the shorter length and turn out the other shock so it slips right on.

You need two to 3 people to set up the sag correctly and rebound is a play and see once you start at the initial suggestion.

Many of us bought from @Smarty who will gladly talk us through the process while sipping margaritas while laying in his hammock on some beach, somewhere.
Throwing in my two cents.

Twowheeladdict, you mention that on Rushmore models that individual shocks are a different length. Do we know if it comes that way from the factory when new? Do they really have a different mount point length dimension as a design? That sounds a little goofy. What if one of the shocks was changing length over time as the bumper inside moved and whole motor moved? This could be caused by the difference in the two shocks, one being a shock with rebound damping adjustment, 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 on it's jiffy stand with more weight on 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. Check 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 (also to Ohlins). I ride two-up 85% of the time. When I removed my shocks, they were just over 1/4" different in length (see pic). Oh my WTF? 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 putting on my new shocks, I too 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. Sag adjustment would be different depending on what side you were measuring. How to set sag in that case? What? Didn’t get it.

Did 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 (to 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?

Lastly, SamJr, your shocks, like my 159’s have three inches of travel. Conventional wisdom is to set sag at 1/3 travel and for us that means 1” or 25/26MM. Not that 30mm is to much though.

Now that I have reread this tome, I will start a new thread with some of the above for general reading/comments.
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Last edited by Bobinator; 05-17-2019 at 08:01 AM.
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post #5 of 9 (permalink) Old 05-18-2019, 08:29 PM
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Quote:
Originally Posted by Bobinator View Post
Throwing in my two cents.

Twowheeladdict, you mention that on Rushmore models that individual shocks are a different length. Do we know if it comes that way from the factory when new? Do they really have a different mount point length dimension as a design? That sounds a little goofy. What if one of the shocks was changing length over time as the bumper inside moved and whole motor moved? This could be caused by the difference in the two shocks, one being a shock with rebound damping adjustment, 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 on it's jiffy stand with more weight on side then the other. Itís 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. Check 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 (also to Ohlins). I ride two-up 85% of the time. When I removed my shocks, they were just over 1/4" different in length (see pic). Oh my WTF? 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 putting on my new shocks, I too 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. Sag adjustment would be different depending on what side you were measuring. How to set sag in that case? What? Didnít get it.

Did 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 (to 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). Wouldnít you know it, the swingarm started to straighten out. I was able to get my shock lengths back to within a 1/16Ē 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, Iím now riding more true.

BTW, my understanding is that the shock Ďdifferenceí is still acceptable according to HD but again WTF?

Lastly, SamJr, your shocks, like my 159ís have three inches of travel. Conventional wisdom is to set sag at 1/3 travel and for us that means 1Ē or 25/26MM. Not that 30mm is to much though.

Now that I have reread this tome, I will start a new thread with some of the above for general reading/comments.
Yes, there is a difference in the distance between the shock mounting holes. The right side is usually about 1/8" shorter than the left side. My theory is durning automated wield up the strut on the right side dips down a 1/16" and the left side pulls up a 1/16". Doing the adjustment puts both shocks at the same place in the travel. Some say it doesn't matter. It matters to me, so I adjust it out. JMHO
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post #6 of 9 (permalink) Old 05-20-2019, 06:38 AM
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Thank you Smarty...

Quote:
Originally Posted by Smarty View Post
Yes, there is a difference in the distance between the shock mounting holes. The right side is usually about 1/8" shorter than the left side. My theory is durning automated wield up the strut on the right side dips down a 1/16" and the left side pulls up a 1/16". Doing the adjustment puts both shocks at the same place in the travel. Some say it doesn't matter. It matters to me, so I adjust it out. JMHO
Carol, you do this all the time so I appreciate and value your expertise. I also very much appreciated you reaching out to me in the middle of my trying to jump out my basement window.

Question, what do you mean when you write "I adjust it out"? Like I did, or by adjusting the length of shocks?


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post #7 of 9 (permalink) Old 05-20-2019, 04:21 PM
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Continued...

Quote:
Originally Posted by Smarty View Post
Yes, there is a difference in the distance between the shock mounting holes. The right side is usually about 1/8" shorter than the left side. My theory is durning automated wield up the strut on the right side dips down a 1/16" and the left side pulls up a 1/16". Doing the adjustment puts both shocks at the same place in the travel. Some say it doesn't matter. It matters to me, so I adjust it out. JMHO
Carol, I've been giving this some more thought...

As a retired engineer I can assure anyone of the 9/32" difference in my stock shocks lengths when I took them off after 18k miles. That is a lot more than an 1/8". How did that happen? Harley didn't have a pair of shocks with that differential? They had to move. It was shocking...(I know, real poor pun!) I do have to think that HD in their experience, could fashion a jig/manufacturing process that yields a level swingarm. Been riding since I was very young (pic on first bike) and on many different bikes and never seen anything like this issue. Had 42K miles on my springer (pic), changed tires numerous times and never had the goofy tire wear I have on my RGS.

Also, nobody has mentioned what to do when you do not have length adjustable shocks? Smarty, if I was putting on a pair of 022's and I have a length difference of 9/32", would I not have to compress one side a lot more just to mount? Both shocks would not be in the same place in travel right? Or am I missing something? (BTW, me missing something happens all the time)

Smarty, I reached out to several owners and found out that depending several factors that shocks were different lengths, but about 1/8" was most common. A brand new 2019 RGS from the factory is 1/8" different too? Stunning. As a "let me see the data" kind of guy, I will start another thread asking some of our peeps to measure so I can see an even greater sampling and if there is a correlation between length of time in use and weight. Hoping to get a lot more data.

Amazingly enough, I also reached out to Ohlins USA via email, but disappointingly never got a response. Nevertheless, LOVE my 159's, as intimated..."ass butter'.

Again Carol, thank you for your expertise, and talk to me...022's... what would have I done?

Bobinator
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post #8 of 9 (permalink) Old 05-22-2019, 02:38 PM
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Carol, I've been giving this some more thought...

As a retired engineer I can assure anyone of the 9/32" difference in my stock shocks lengths when I took them off after 18k miles. That is a lot more than an 1/8". How did that happen? Harley didn't have a pair of shocks with that differential? They had to move. It was shocking...(I know, real poor pun!) I do have to think that HD in their experience, could fashion a jig/manufacturing process that yields a level swingarm. Been riding since I was very young (pic on first bike) and on many different bikes and never seen anything like this issue. Had 42K miles on my springer (pic), changed tires numerous times and never had the goofy tire wear I have on my RGS.

Also, nobody has mentioned what to do when you do not have length adjustable shocks? Smarty, if I was putting on a pair of 022's and I have a length difference of 9/32", would I not have to compress one side a lot more just to mount? Both shocks would not be in the same place in travel right? Or am I missing something? (BTW, me missing something happens all the time)

Smarty, I reached out to several owners and found out that depending several factors that shocks were different lengths, but about 1/8" was most common. A brand new 2019 RGS from the factory is 1/8" different too? Stunning. As a "let me see the data" kind of guy, I will start another thread asking some of our peeps to measure so I can see an even greater sampling and if there is a correlation between length of time in use and weight. Hoping to get a lot more data.

Amazingly enough, I also reached out to Ohlins USA via email, but disappointingly never got a response. Nevertheless, LOVE my 159's, as intimated..."ass butter'.

Again Carol, thank you for your expertise, and talk to me...022's... what would have I done?

Bobinator
Bob, I have had some that are more than an 1/8" different on several occasions, but only one that was exactly even out of all the installations I have been connected with. Some seem to think it doesn't matter. Me, I think most of the front end wobble at high speed was more connected to the back shocks than ever was connected to the front fork fall away.

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post #9 of 9 (permalink) Old 05-22-2019, 02:42 PM
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Carol, you do this all the time so I appreciate and value your expertise. I also very much appreciated you reaching out to me in the middle of my trying to jump out my basement window.

Question, what do you mean when you write "I adjust it out"? Like I did, or by adjusting the length of shocks?
Adjust the length of the shock. SOL without the adjustable eyes. Hmmm maybe there is more to the Harley doing the one big spring on one side than meets the eye..... Just the same, it has to twist the rubber mounted swingarm if both are not the same. Same with spring adjustment. If both aren't dead on, you are asking for mishandling woes from the start. JMHO
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